{"id":5813,"date":"2025-07-11T00:00:00","date_gmt":"2025-07-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/what-is-the-difference-between-nrz-and-pam4\/"},"modified":"2026-06-22T09:06:48","modified_gmt":"2026-06-22T09:06:48","slug":"what-is-the-difference-between-nrz-and-pam4","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/what-is-the-difference-between-nrz-and-pam4","title":{"rendered":"NRZ\u3068PAM4\uff1a\u4e3b\u306a\u9055\u3044\u3092\u7406\u89e3\u3059\u308b"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c.webp\" alt=\"What is the difference between NRZ and PAM4?\" class=\"wp-image-5807\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/05091a803b6a4dbdbdb66f8a4b45136c-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 PAM4\u3068NRZ\u306e\u4e3b\u306a\u9055\u3044<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e2\u30c0\u30f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u306b\u3001PAM4\u304a\u3088\u3073NRZ\u5909\u8abf\u65b9\u5f0f\u306e\u9055\u3044\u3092\u8a73\u3057\u304f\u63a2\u308b\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p><strong>\u6a5f\u80fd<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>NRZ\uff08Non-Return to Zero\uff1a\u30bc\u30ed\u30ea\u30bf\u30fc\u30f3\u306a\u3057\uff09<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>PAM4\uff08\u30d1\u30eb\u30b9\u632f\u5e45\u5909\u8abf4\u30ec\u30d9\u30eb\uff09<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30ec\u30d9\u30eb\u6570<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2\uff08\u4f8b\uff1aLow\uff1d0\u3001High\uff1d1\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4\uff08\u4f8b\uff1aL0\uff1d00\u3001L1\uff1d01\u3001L2\uff1d10\u3001L3\uff1d11\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30b7\u30f3\u30dc\u30eb\u3042\u305f\u308a\u306e\u30d3\u30c3\u30c8\u6570<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u52b9\u7387<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044\uff08\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\uff1d\u30b7\u30f3\u30dc\u30eb\u30ec\u30fc\u30c8\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\uff1d2\u00d7\u30b7\u30f3\u30dc\u30eb\u30ec\u30fc\u30c8\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u540c\u3058\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u306b\u304a\u3051\u308b\u30b7\u30f3\u30dc\u30eb\u30ec\u30fc\u30c8\uff08\u30dc\u30fc\u30ec\u30fc\u30c8\uff09<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u4f8b\uff1a56Gbps\u306b\u5bfe\u3057\u306656GBaud\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044\uff08\u4f8b\uff1a56Gbps\u306e\u5834\u540828GBaud\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30ce\u30a4\u30ba\u3078\u306e\u611f\u53d7\u6027<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044\uff08\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u304c\u5927\u304d\u304f\u3001SNR\u30de\u30fc\u30b8\u30f3\u304c\u9ad8\u3044\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u304c\u5c0f\u3055\u304f\u3001SNR\u30de\u30fc\u30b8\u30f3\u304c\u4f4e\u3044\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u5b9f\u88c5\u306e\u8907\u96d1\u3055<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08DSP\u304a\u3088\u3073\u5f37\u529b\u306aFEC\u304c\u5fc5\u8981\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30d3\u30c3\u30c8\u3042\u305f\u308a\u306e\u5178\u578b\u7684\u306a\u6d88\u8cbb\u96fb\u529b<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044\uff08\u6210\u719f\u3057\u305f\u6280\u8853\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u8907\u96d1\u3055\u306b\u3088\u308b\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u4e3b\u6d41\u306e\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30fc\u30f3\u3042\u305f\u308a\u226425Gbps\uff08\u4f8b\uff1a10G\u300125G SFP+\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30ec\u30fc\u30f3\u3042\u305f\u308a\u226550Gbps\uff08\u4f8b\uff1a100G\u3001200G\u3001400G\u3001800G\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u4e3b\u306a\u5fdc\u7528\u5206\u91ce<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5f93\u6765\u306e10G\uff0f25G\u3001\u77ed\u8ddd\u96e2\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u901f\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\uff08100G\u4ee5\u4e0a\uff09\u3001HPC\u3001AI\uff0fML\u30af\u30e9\u30b9\u30bf\u30fc\u30015G\u30d5\u30ed\u30f3\u30c8\u30db\u30fc\u30eb\uff0f\u30df\u30c9\u30eb\u30db\u30fc\u30eb<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u304c\u3088\u308a\u9ad8\u901f\u306a\u901a\u4fe1\u3092\u5fc5\u8981\u3068\u3059\u308b\u306b\u3064\u308c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u6025\u901f\u306b\u5909\u5316\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002 <strong>PAM4 vs NRZ<\/strong> \u3053\u306e\u8b70\u8ad6\u306f\u91cd\u8981\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001PAM4\u306f\u5404\u30b7\u30f3\u30dc\u30eb\u30672\u30d3\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u4e00\u65b9\u3001NRZ\u306f1\u30d3\u30c3\u30c8\u306e\u307f\u9001\u4fe1\u3059\u308b\u304b\u3089\u3067\u3059\u3002\u3053\u306e\u5909\u66f4\u306b\u3088\u308a\u3001\u65b0\u3057\u3044\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3067\u306f\u5e2f\u57df\u5e45\u306e\u52b9\u7387\u304c2\u500d\u306b\u306a\u308a\u3001\u30c1\u30e3\u30cd\u30eb\u5e2f\u57df\u5e45\u3092\u8ffd\u52a0\u3067\u4f7f\u7528\u3059\u308b\u3053\u3068\u306a\u304f\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u306b\u304a\u3044\u3066PAM4\u3068NRZ\u3092\u6bd4\u8f03\u3059\u308b\u610f\u7fa9\u306f\u3001PAM4\u304c4\u3064\u306e\u632f\u5e45\u30ec\u30d9\u30eb\u3092\u6301\u3064\u306e\u306b\u6bd4\u3079\u3001NRZ\u306f2\u3064\u306e\u307f\u3067\u3042\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u9ad8\u901f\u5316\u3059\u308b\u306b\u3064\u308c\u3001PAM4\u5909\u8abf\u306f\u30c7\u30fc\u30bf\u9001\u4fe1\u3092\u3088\u308a\u8fc5\u901f\u304b\u3064\u9ad8\u54c1\u8cea\u306b\u5b9f\u73fe\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u4e3b\u306a\u30dd\u30a4\u30f3\u30c8<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>PAM4<\/strong> \u5404\u30b7\u30f3\u30dc\u30eb\u30672\u30d3\u30c3\u30c8\u3092\u9001\u4fe1\u3057\u30014\u3064\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001NRZ\u3068\u6bd4\u8f03\u3057\u3066\u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u304c2\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001NRZ\u306f\u5404\u30b7\u30f3\u30dc\u30eb\u30671\u30d3\u30c3\u30c8\u306e\u307f\u9001\u4fe1\u3057\u30012\u3064\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u306e\u307f\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p><\/li><li><p><strong>NRZ<\/strong> \u3088\u308a\u5f37\u3044\u4fe1\u53f7\u3092\u6301\u3061\u3001\u30ce\u30a4\u30ba\u304c\u5c11\u306a\u304f\u3001\u6d88\u8cbb\u96fb\u529b\u3082\u5c11\u306a\u3044\u305f\u3081\u3001\u4f7f\u3044\u3084\u3059\u304f\u3001\u9577\u8ddd\u96e2\u307e\u305f\u306f\u4f4e\u901f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><li><p>PAM4\u306f\u9ad8\u901f\u30fb\u77ed\u8ddd\u96e2\u30ea\u30f3\u30af\u306b\u6700\u9069\u3067\u3059\u3002400G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3084\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3067\u4f7f\u7528\u3055\u308c\u3001\u7279\u6b8a\u306a\u8aa4\u308a\u8a02\u6b63\u3092\u5fc5\u8981\u3068\u3057\u3001\u3088\u308a\u591a\u304f\u306e\u96fb\u529b\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>\u3054\u4f7f\u7528\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5fdc\u3058\u3066PAM4\u304bNRZ\u304b\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u901f\u5ea6\u3001\u8ddd\u96e2\u3001\u30b3\u30b9\u30c8\u3001\u5c06\u6765\u306e\u30cb\u30fc\u30ba\u3092\u8003\u616e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p><\/li><li><p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067PAM4\u3068NRZ\u306e\u4e21\u65b9\u3092\u4f75\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u901f\u5ea6\u3068\u4fe1\u983c\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u5c06\u6765\u7684\u306a\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306b\u3082\u5bfe\u5fdc\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u30e2\u30b8\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u790e<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >NRZ\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"486\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1.webp\" alt=\"NRZ encoding\" class=\"wp-image-5808\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1-300x122.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1-1024x415.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1-768x311.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ce3795470145420dba9b9d02e500e6f1-18x7.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/understanding-non-return-to-zero-in-digital-communication\/\"><strong>NRZ<\/strong><\/a> \u4fe1\u53f7\u3092\u9001\u4fe1\u3059\u308b\u7c21\u5358\u306a\u65b9\u6cd5\u3067\u3059\u3002\u300c<em>non-return to zero<\/em>\u300d\u306e\u7565\u3067\u3059\u3002 <strong>\u30ce\u30f3\u30fb\u30ea\u30bf\u30fc\u30f3\u30fb\u30c8\u30a5\u30fb\u30bc\u30ed<\/strong>. \u3002\u3053\u306e\u65b9\u5f0f\u3067\u306f\u30012\u3064\u306e\u96fb\u5727\u3092\u7528\u3044\u30662\u9032\u30c7\u30fc\u30bf\u3092\u8868\u73fe\u3057\u307e\u3059\u3002\u300c1\u300d\u306f\u9ad8\u96fb\u5727\u3001\u300c0\u300d\u306f\u4f4e\u96fb\u5727\u3067\u3059\u3002\u4fe1\u53f7\u306f\u30d3\u30c3\u30c8\u9593\u3067\u30bc\u30ed\u306b\u623b\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7406\u89e3\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002\u30e6\u30cb\u30dd\u30fc\u30e9NRZ\u3067\u306f\u3001\u300c1\u300d\u306f\u6b63\u306e\u96fb\u5727\u3001\u300c0\u300d\u306f\u30bc\u30ed\u30dc\u30eb\u30c8\u3067\u3059\u3002\u30d0\u30a4\u30dd\u30fc\u30e9NRZ\u3067\u306f\u3001\u4fe1\u53f7\u304c\u6b63\u306e\u96fb\u5727\u3068\u8ca0\u306e\u96fb\u5727\u306e\u9593\u3067\u5207\u308a\u66ff\u308f\u308a\u307e\u3059\u3002. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px 0px 4px;\"><strong>2 \u30ec\u30d9\u30eb\uff1a<\/strong> \u96fb\u5727\uff08\u96fb\u6c17\u7684\uff09\u307e\u305f\u306f\u5149\u5f37\u5ea6\uff08\u5149\u5b66\u7684\uff09\u306e2\u3064\u306e\u660e\u78ba\u306a\u30ec\u30d9\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p><ul><li><p style=\"margin: 0px;\">\u9ad8\u30ec\u30d9\u30eb\u306f\u901a\u5e38\u3001\u8ad6\u7406\u300c1\u300d\u3092\u8868\u3057\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px;\">\u4f4e\u30ec\u30d9\u30eb\u306f\u8ad6\u7406\u300c0\u300d\u3092\u8868\u3057\u307e\u3059\u3002.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>\u5358\u7d14\u306a\u52d5\u4f5c\uff1a<\/strong> \u5404\u30b7\u30f3\u30dc\u30eb\u671f\u9593\u306b\u306f\u300c1\u300d\u307e\u305f\u306f\u300c0\u300d\u306e\u3044\u305a\u308c\u304b\u304c\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u540c\u4e00\u306e\u5024\u3092\u6301\u3064\u30d3\u30c3\u30c8\u9593\u3067\u306f\u3001\u4fe1\u53f7\u306f\u4e2d\u7acb\u306e\u300c\u30bc\u30ed\u300d\u72b6\u614b\u306b\u623b\u308a\u307e\u305b\u3093\uff08\u3057\u305f\u304c\u3063\u3066\u300cNon-Return to Zero\u300d\uff09\u3002.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u5229\u70b9\uff1a<\/strong> \u30b7\u30f3\u30d7\u30eb\u3055\u306b\u3088\u308a\u3001NRZ\u306f\u5805\u7262\u6027\u304c\u9ad8\u304f\u3001\u6d88\u8cbb\u96fb\u529b\u304c\u5c11\u306a\u304f\u3001\u4fe1\u53f7\u51e6\u7406\u304c\u6bd4\u8f03\u7684\u7c21\u5358\u3067\u3059\u3002\u4f4e\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u3067\u306f\u512a\u308c\u305f\u4fe1\u53f7\u6574\u5408\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u5236\u9650\u4e8b\u9805\uff1a<\/strong> \u3057\u304b\u3057\u3001\u305d\u306e\u52b9\u7387\u306b\u306f\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u30922\u500d\u306b\u3059\u308b\u306b\u306f\u3001\u30b7\u30f3\u30dc\u30eb\u30ec\u30fc\u30c8\uff08\u30dc\u30fc\u30ec\u30fc\u30c8\uff09\u30922\u500d\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30dc\u30fc\u30ec\u30fc\u30c8\u30922\u500d\u306b\u3059\u308b\u3068\u3001\u30c1\u30e3\u30cd\u30eb\u640d\u5931\u3001\u30ce\u30a4\u30ba\u3001\u30af\u30ed\u30b9\u30c8\u30fc\u30af\u306b\u3088\u308b\u4fe1\u53f7\u52a3\u5316\u304c\u5927\u5e45\u306b\u5897\u52a0\u3057\u3001\u4e3b\u6d41\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u7d0425\u201328\u30ae\u30ac\u30dc\u30fc\u30ec\u30fc\u30c8\uff0f\u30ec\u30fc\u30f3\u3092\u8d85\u3048\u308b\u3068\u5b9f\u7528\u7684\u3067\u306f\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >PAM4\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"516\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b.webp\" alt=\"PAM4 encoding\" class=\"wp-image-5809\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b-300x129.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b-1024x440.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b-768x330.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8766e10c7cab415784322b28ebf4f58b-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\/\"><strong>PAM4<\/strong><\/a> \u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u5ea6\u306b\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u300c<em>pulse amplitude modulation 4-level<\/em>\u300d\u306e\u7565\u3067\u3059\u3002 <strong>\u30d1\u30eb\u30b9\u632f\u5e45\u5909\u8abf4\u30ec\u30d9\u30eb\uff08PAM4\uff09<\/strong>. \u3002PAM4\u3067\u306f\u30014\u3064\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u7528\u3044\u3066\u5404\u30b7\u30f3\u30dc\u30eb\u306b2\u30d3\u30c3\u30c8\u3092\u8868\u73fe\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u540c\u3058\u6642\u9593\u5185\u306bNRZ\u306e2\u500d\u306e\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002PAM4\u306f\u3001\u5e2f\u57df\u5e45\u306e\u5229\u7528\u52b9\u7387\u3092\u9ad8\u3081\u308b\u30d1\u30eb\u30b9\u632f\u5e45\u5909\u8abf\u306e\u4e00\u7a2e\u3067\u3059\u3002PAM4\u306e\u5404\u30b7\u30f3\u30dc\u30eb\u306f\u300c00\u300d\u300c01\u300d\u300c10\u300d\u300c11\u300d\u306e\u3044\u305a\u308c\u304b\u306e2\u30d3\u30c3\u30c8\u30da\u30a2\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8ffd\u52a0\u306e\u30c1\u30e3\u30cd\u30eb\u5e2f\u57df\u5e45\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u3001\u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>4 \u30ec\u30d9\u30eb\uff1a<\/strong> PAM4\u306f\u3001 <em>\u56db<\/em> \u306e\u660e\u78ba\u306a\u96fb\u5727\u307e\u305f\u306f\u5149\u5f37\u5ea6\u30ec\u30d9\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>\u30b7\u30f3\u30dc\u30eb\u3042\u305f\u308a2\u30d3\u30c3\u30c8\uff1a<\/strong> \u5404\u30b7\u30f3\u30dc\u30eb\u671f\u9593\u306b\u306f\u3001 <em>two<\/em> \u30d3\u30c3\u30c8\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p><ul><li><p style=\"margin: 0px;\">\u30ec\u30d9\u30eb0\uff1a\u300c00\u300d\u2019<\/p><\/li><li><p style=\"margin: 0px;\">\u30ec\u30d9\u30eb1\uff1a\u300c01\u300d\u2019<\/p><\/li><li><p style=\"margin: 0px;\">\u30ec\u30d9\u30eb2\uff1a\u300c10\u300d\u2019<\/p><\/li><li><p style=\"margin: 0px;\">\u30ec\u30d9\u30eb3\uff1a\u300c11\u300d\u2019<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>\u52b9\u7387\u306e2\u500d\u5316\uff1a<\/strong> \u30b7\u30f3\u30dc\u30eb\u3042\u305f\u308a2\u30d3\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001PAM4\u306fNRZ\u306e2\u500d\u306e\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u3092\u9054\u6210\u3057\u307e\u3059\u3002 <em>\u540c\u3058\u30dc\u30fc\u30ec\u30fc\u30c8\u3067<\/em>. 28 \u30ae\u30ac\u30dc\u30fc\u30c7\u30a3 PAM4 \u4fe1\u53f7\u306f\u30011 \u30ec\u30fc\u30f3\u3042\u305f\u308a\u79d2\u9593 56 \u30ae\u30ac\u30d3\u30c3\u30c8\uff08Gbps\uff09\u3092\u4f1d\u9001\u3057\u307e\u3059\u304c\u3001NRZ \u3067\u306f\u305d\u306e\u30dc\u30fc\u30ec\u30fc\u30c8\u306b\u304a\u3044\u3066\u306f 28 Gbps \u306e\u307f\u3057\u304b\u4f1d\u9001\u3067\u304d\u307e\u305b\u3093\u3002.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>\u8ab2\u984c\uff1a<\/strong> \u3053\u306e\u52b9\u7387\u306b\u306f\u4ee3\u511f\u304c\u3042\u308a\u307e\u3059\uff1a<\/p><ul><li><p style=\"margin: 0px;\"><strong>\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306e\u4f4e\u4e0b\uff1a<\/strong> PAM4\u306e4\u3064\u306e\u30ec\u30d9\u30eb\u306f\u3001NRZ\u306e2\u3064\u306e\u30ec\u30d9\u30eb\u3088\u308a\u3082\u4e92\u3044\u306b\u8fd1\u63a5\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4fe1\u53f7\u306f\u30ce\u30a4\u30ba\u3001\u6b6a\u307f\u3001\u5e72\u6e09\u306b\u5bfe\u3057\u3066\u306f\u308b\u304b\u306b\u654f\u611f\u306b\u306a\u308a\u307e\u3059\u3002\u30ce\u30a4\u30ba\u30de\u30fc\u30b8\u30f3\u304c\u5c0f\u3055\u304f\u306a\u308b\u3068\u3001\u30ec\u30d9\u30eb\u304c\u53cd\u8ee2\u3057\u3066\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u8907\u96d1\u3055\u306e\u5897\u52a0\uff1a<\/strong> PAM4\u3067\u306f\u3001\u306f\u308b\u304b\u306b\u9ad8\u5ea6\u306a\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u8a2d\u8a08\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u5f37\u529b\u306a <strong>\u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff08FEC\uff09<\/strong>, \u3001\u9ad8\u5ea6\u306a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/digital-signal-processor-functionality-in-optical-transceivers\/\"><strong>DSP\uff08\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u51e6\u7406\uff09<\/strong><\/a>, \u3001\u304a\u3088\u3073\u30c9\u30e9\u30a4\u30d0\u3068\u30ec\u30b7\u30fc\u30d0\u306b\u304a\u3051\u308b\u7cbe\u5bc6\u306a\u30ea\u30cb\u30a2\u30ea\u30c6\u30a3\u3092\u542b\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u4e00\u822c\u306b\u3001\u6210\u719f\u3057\u305fNRZ\u8a2d\u8a08\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30d3\u30c3\u30c8\u3042\u305f\u308a\u306e\u6d88\u8cbb\u96fb\u529b\u304c\u9ad8\u304f\u306a\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u6ce8\uff1aPAM4\u306f\u3088\u308a\u591a\u304f\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u6301\u3064\u305f\u3081\u3001\u305d\u308c\u3089\u306e\u9593\u9694\u304c\u72ed\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001PAM4\u4fe1\u53f7\u306fNRZ\u4fe1\u53f7\u3088\u308a\u3082\u30ce\u30a4\u30ba\u306b\u3088\u3063\u3066\u4e71\u3055\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >\u5909\u8abf\u304c\u91cd\u8981\u306a\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/what-is-optical-modulation-and-how-it-works-explained\/\"><strong>\u5909\u8abf\u65b9\u5f0f<\/strong><\/a> \u30c7\u30b8\u30bf\u30eb\u30c7\u30fc\u30bf\u3092\u30ef\u30a4\u30e4\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30d0\u4e0a\u3067\u9001\u4fe1\u3059\u308b\u306b\u306f\u3001<strong>\u5909\u8abf<\/strong>\u304c\u5fc5\u8981\u3067\u3059\u3002\u5909\u8abf\u306f\u4fe1\u53f7\u3092\u5909\u5316\u3055\u305b\u3001\u9577\u8ddd\u96e2\u4f1d\u9001\u6642\u306b\u30c8\u30e9\u30d6\u30eb\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u9ad8\u901f\u30c7\u30fc\u30bf\u3067\u306f\u3001\u30de\u30c3\u30cf\u30fb\u30c4\u30a7\u30f3\u30c0\u30fc\u5909\u8abf\u5668\u306a\u3069\u306e\u5916\u90e8\u5909\u8abf\u30c4\u30fc\u30eb\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u4fe1\u53f7\u306e\u5f37\u5ea6\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002\u30d1\u30eb\u30b9\u632f\u5e45\u5909\u8abf\uff08PAM\uff09\u3084\u305d\u306e\u4ed6\u306e\u4fe1\u53f7\u5909\u8abf\u624b\u6cd5\u306b\u3088\u308a\u3001\u901f\u5ea6\u3001\u52b9\u7387\u3001\u4fe1\u983c\u6027\u306e\u6700\u9069\u306a\u30d0\u30e9\u30f3\u30b9\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u3068\u4fe1\u53f7\u5b8c\u5168\u6027<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >NRZ\u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"659\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e.webp\" alt=\"NRZ eye diagram\" class=\"wp-image-5810\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e-300x165.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e-1024x562.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e-768x422.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e1f1ed087d5b4594a6e4af41382f1e6e-18x10.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>NRZ\u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/strong>\u3092 <strong>NRZ\u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/strong>, \u898b\u308b\u3068\u3001\u4fe1\u53f7\u306e\u52d5\u4f5c\u304c\u308f\u304b\u308a\u307e\u3059\u30020\u30681\u306b\u5bfe\u5fdc\u3059\u308b2\u3064\u306e\u4e3b\u8981\u306a\u96fb\u5727\u30ec\u30d9\u30eb\u304c\u3042\u308a\u3001\u3053\u308c\u306b\u3088\u308a\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u4e0a\u306b\u5927\u304d\u304f\u958b\u3044\u305f\u300c\u30a2\u30a4\u300d\u5f62\u72b6\u304c\u5f62\u6210\u3055\u308c\u307e\u3059\u3002\u958b\u3044\u305f\u30a2\u30a4\u306f\u3001\u4fe1\u53f7\u304c\u5f37\u304f\u3001\u30ce\u30a4\u30ba\u306b\u3088\u3063\u3066\u5bb9\u6613\u306b\u4e71\u3055\u308c\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>2 \u3064\u306e\u660e\u78ba\u306a\u96fb\u5727\u30ec\u30d9\u30eb\u304c\u78ba\u8a8d\u3067\u304d\u308b\u305f\u3081\u30010 \u3068 1 \u3092\u5bb9\u6613\u306b\u533a\u5225\u3067\u304d\u307e\u3059\u3002.<\/p><\/li><li><p>\u5e83\u3044\u30a2\u30a4\u958b\u53e3\u90e8\u306f\u3001\u4fe1\u53f7\u304c\u5f37\u304f\u3001\u307b\u3068\u3093\u3069\u5909\u5316\u3057\u306a\u3044\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>\u30ec\u30d9\u30eb\u9593\u306e\u6ed1\u3089\u304b\u306a\u9077\u79fb\u306b\u3088\u308a\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u6b63\u78ba\u306b\u8ffd\u8de1\u3067\u304d\u3001\u8aa4\u308a\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p><\/li><li><p>\u30a2\u30a4\u306e\u9ad8\u3044\u90e8\u5206\u306f\u3001\u4fe1\u53f7\u304c\u8010\u3048\u3089\u308c\u308b\u30ce\u30a4\u30ba\u306e\u91cf\u3092\u793a\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>\u30a2\u30a4\u306e\u5e83\u3044\u90e8\u5206\u306f\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u30b8\u30c3\u30bf\u3084\u30b7\u30f3\u30dc\u30eb\u9593\u5e72\u6e09\uff08ISI\uff09\u306e\u6709\u7121\u3092\u793a\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>\u3088\u308a\u5927\u304d\u306a\u30a2\u30a4\u306f\u3001\u8aa4\u308a\u304c\u5c11\u306a\u304f\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u3082\u5bb9\u6613\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>\u30a2\u30a4\u304c\u5c0f\u3055\u304f\u306a\u308b\u3068\u3001\u30ce\u30a4\u30ba\u3084\u305d\u306e\u4ed6\u306e\u554f\u984c\u306b\u3088\u308a\u4fe1\u53f7\u54c1\u8cea\u304c\u52a3\u5316\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">NRZ\u30a2\u30a4\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3001PAM4\u307b\u3069\u8907\u96d1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3057\u305f\u3044\u5834\u5408\u306b\u3001NRZ\u306f\u3088\u308a\u5f37\u529b\u3067\u4f7f\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >PAM4\u30a2\u30a4\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"602\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6.webp\" alt=\" PAM4 eye diagram\" class=\"wp-image-5811\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6-300x151.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6-1024x514.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6-768x385.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1f23795d5d84753b9dee268ead913e6-18x9.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e <strong>PAM4\u30a2\u30a4\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/strong> NRZ\u306e\u3082\u306e\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u30022\u3064\u306e\u30ec\u30d9\u30eb\u3067\u306f\u306a\u304f\u30014\u3064\u306e\u7570\u306a\u308b\u30ec\u30d9\u30eb\u304c\u898b\u3089\u308c\u307e\u3059\u3002\u5404\u30ec\u30d9\u30eb\u306f\u7570\u306a\u308b2\u30d3\u30c3\u30c8\u306e\u30da\u30a2\u3092\u8868\u3057\u307e\u3059\u3002\u30ec\u30d9\u30eb\u9593\u306e\u9593\u9694\u304c\u72ed\u3044\u305f\u3081\u3001\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u306f\u5c0f\u3055\u304f\u3001\u91cd\u306d\u3066\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001PAM4\u4fe1\u53f7\u306f\u30ce\u30a4\u30ba\u306b\u3088\u3063\u3066\u4e71\u3055\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PAM4\u306e\u5c0f\u3055\u306a\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u304b\u3089\u3001\u30ce\u30a4\u30ba\u8010\u6027\u304c\u4f4e\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30a2\u30a4\u304c\u5927\u304d\u304f\u306a\u3044\u305f\u3081\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u7ba1\u7406\u3082\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u904e\u5ea6\u306a\u30ce\u30a4\u30ba\u304c\u3042\u308b\u3068\u3001\u91cd\u306d\u3089\u308c\u305f\u30a2\u30a4\u304c\u6df7\u3056\u308a\u5408\u3044\u3001\u8aa4\u308a\u304c\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002PAM4\u4fe1\u53f7\u3092\u660e\u77ad\u306b\u4fdd\u3064\u305f\u3081\u306b\u306f\u3001\u30a8\u30e9\u30fc\u3092\u4fee\u6b63\u3059\u308b\u7279\u5225\u306a\u30c4\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e21\u8005\u3092\u6bd4\u8f03\u3059\u308b\u3068\u3001NRZ\u306f\u3088\u308a\u30af\u30ea\u30fc\u30f3\u3067\u5927\u304d\u306a\u30a2\u30a4\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001PAM4\u306f\u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u304c\u3001\u4fe1\u53f7\u306e\u76e3\u8996\u3068\u8aa4\u308a\u3092\u4f4e\u6e1b\u3059\u308b\u305f\u3081\u306e\u8ffd\u52a0\u652f\u63f4\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u5404\u6280\u8853\u306e\u512a\u308c\u305f\u5fdc\u7528\u5206\u91ce<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>NRZ\uff1a<\/strong> \u4f9d\u7136\u3068\u3057\u3066\u3001\u5358\u7d14\u3055\u3001\u96fb\u529b\u52b9\u7387\u3001\u30b3\u30b9\u30c8\u52b9\u7387\u304c\u6700\u91cd\u8981\u8996\u3055\u308c\u308b\u3001\u30ec\u30fc\u30f3\u3042\u305f\u308a\u226425Gbps\u306e\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u306b\u304a\u3044\u3066\u652f\u914d\u7684\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u300110\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff0810GbE\uff09\u3001\u30b5\u30fc\u30d0\u63a5\u7d9a\u306b\u304a\u3051\u308b25\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff0825GbE\uff09\u3001\u304a\u3088\u3073\u65e7\u5f0f\u30b7\u30b9\u30c6\u30e0\u306a\u3069\u3067\u3059\u3002\u591a\u304f\u306e <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong><\/a> \u30bf\u30a4\u30d7\u3001\u4f8b\u3048\u3070 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\"><strong>SFP+<\/strong><\/a> \uff0810G\/25G\uff09\u304a\u3088\u3073 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>QSFP28<\/strong><\/a> \uff084\u00d725G\uff1d100G\uff09\u304cNRZ\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>PAM4\uff1a<\/strong> \u30ec\u30fc\u30f3\u3042\u305f\u308a50Gbps\u4ee5\u4e0a\u3092\u5fc5\u8981\u3068\u3059\u308b\u9ad8\u5bc6\u5ea6\u30fb\u9ad8\u5e2f\u57df\u5e45\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u5727\u5012\u7684\u306a\u512a\u4f4d\u6027\u3092\u8a87\u308b\u6280\u8853\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u5fdc\u7528\u4f8b\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p><ul><li><p style=\"margin: 0px;\">100 \u30ae\u30ac\u30d3\u30c3\u30c8\u30fb\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff08100GbE \u2013 50G PAM4 \u3092 2 \u30ec\u30fc\u30f3\u4f7f\u7528\uff09<\/p><\/li><li><p style=\"margin: 0px;\">200 \u30ae\u30ac\u30d3\u30c3\u30c8\u30fb\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff08200GbE \u2013 50G PAM4 \u3092 4 \u30ec\u30fc\u30f3\u4f7f\u7528\uff09<\/p><\/li><li><p style=\"margin: 0px;\">400 \u30ae\u30ac\u30d3\u30c3\u30c8\u30fb\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff08400GbE \u2013 50G PAM4 \u3092 8 \u30ec\u30fc\u30f3\u4f7f\u7528\u3001\u307e\u305f\u306f 100G PAM4 \u3092 4 \u30ec\u30fc\u30f3\u4f7f\u7528\uff09<\/p><\/li><li><p style=\"margin: 0px;\">800 \u30ae\u30ac\u30d3\u30c3\u30c8\u30fb\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff08800GbE \u2013 100G PAM4 \u3092 8 \u30ec\u30fc\u30f3\u4f7f\u7528\uff09<\/p><\/li><li><p style=\"margin: 0px;\">AI\uff0fML\u30af\u30e9\u30b9\u30bf\u304a\u3088\u3073\u9ad8\u6027\u80fd\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff08HPC\uff09\u30a4\u30f3\u30bf\u30fc\u30b3\u30cd\u30af\u30c8\u3002.<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 PAM4\u3068NRZ\u306e\u9078\u629e<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PAM4\u3068NRZ\u306e\u3069\u3061\u3089\u3092\u9078\u3076\u304b\u3092\u691c\u8a0e\u3059\u308b\u969b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u70b9\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u304c\u7570\u306a\u308b\u7528\u9014\u306b\u9069\u3057\u3066\u304a\u308a\u3001\u901f\u5ea6\u3001\u4fa1\u683c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5c06\u6765\u7684\u306a\u62e1\u5f35\u6027\u3068\u3044\u3063\u305f\u8981\u4ef6\u306b\u5408\u81f4\u3059\u308b\u3082\u306e\u3092\u9078\u3076\u3079\u304d\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u691c\u8a0e\u3059\u3079\u304d\u4e3b\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u901f\u5ea6\u8981\u4ef6<\/strong>\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u901f\u5ea6\u304c400G\u4ee5\u4e0a\u306a\u3069\u975e\u5e38\u306b\u9ad8\u901f\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001PAM4\u306f\u540c\u3058\u7a7a\u9593\u30672\u500d\u306e\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002NRZ\u306f\u3001\u305d\u308c\u307b\u3069\u9ad8\u901f\u3055\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u4f4e\u901f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><li><p><strong>\u4fe1\u53f7\u54c1\u8cea<\/strong>\uff1aNRZ\u306f2\u3064\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u6301\u3064\u305f\u3081\u3001\u30ce\u30a4\u30ba\u306b\u5bfe\u3057\u3066\u3088\u308a\u5f37\u304f\u3001\u8aa4\u308a\u304c\u5c11\u306a\u304f\u3001\u4fe1\u53f7\u304c\u660e\u77ad\u3067\u3059\u3002\u4e00\u65b9\u3001PAM4\u306f4\u3064\u306e\u30ec\u30d9\u30eb\u3092\u6301\u3064\u305f\u3081\u3001\u30ce\u30a4\u30ba\u306b\u3088\u308b\u4fe1\u53f7\u52a3\u5316\u304c\u8d77\u3053\u308a\u3084\u3059\u304f\u3001\u30a8\u30e9\u30fc\u8a02\u6b63\u306b\u306f\u7279\u5225\u306a\u30c4\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p><\/li><li><p><strong>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u304a\u3088\u3073\u30b3\u30b9\u30c8<\/strong>\uff1aNRZ\u90e8\u54c1\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u30b3\u30b9\u30c8\u304c\u4f4e\u304f\u6291\u3048\u3089\u308c\u307e\u3059\u3002PAM4\u306f\u3088\u308a\u591a\u304f\u306e\u90e8\u54c1\u3068\u7279\u6b8a\u306a\u30c1\u30c3\u30d7\u3092\u5fc5\u8981\u3068\u3059\u308b\u305f\u3081\u3001\u30b3\u30b9\u30c8\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u30b3\u30b9\u30c8\u524a\u6e1b\u3068\u7c21\u6613\u6027\u3092\u91cd\u8996\u3059\u308b\u306a\u3089\u3001NRZ\u304c\u8ce2\u3044\u9078\u629e\u3067\u3059\u3002.<\/p><\/li><li><p><strong>\u96fb\u529b\u6d88\u8cbb<\/strong>\uff1aNRZ\u306f\u8ffd\u52a0\u306e\u51e6\u7406\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u305f\u3081\u3001\u6d88\u8cbb\u96fb\u529b\u304c\u5c11\u306a\u3044\u3067\u3059\u3002PAM4\u306f\u4fe1\u53f7\u3092\u660e\u77ad\u306b\u4fdd\u3064\u305f\u3081\u306b\u3088\u308a\u591a\u304f\u306e\u96fb\u529b\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002.<\/p><\/li><li><p><strong>\u8ddd\u96e2<\/strong>\uff1aNRZ\u306f\u9577\u8ddd\u96e2\u4f1d\u9001\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002PAM4\u306f\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u5185\u306e\u3088\u3046\u306a\u77ed\u8ddd\u96e2\u30ea\u30f3\u30af\u306b\u6700\u9069\u3067\u3059\u3002.<\/p><\/li><li><p><strong>\u5c06\u6765\u7684\u306a\u62e1\u5f35\u6027<\/strong>\uff1a\u5c06\u6765\u7684\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3055\u3089\u306b\u9ad8\u901f\u5316\u3057\u305f\u3044\u5834\u5408\u3001PAM4\u306f\u3088\u308a\u9ad8\u3044\u901f\u5ea6\u3068\u65b0\u3057\u3044\u898f\u683c\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u9055\u3044\u306f\u3001\u4ee5\u4e0b\u306e\u8868\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u8981\u7d20<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>NRZ\u306e\u7279\u5fb4<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>PAM4\u306e\u7279\u5fb4<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u78c1\u6c17\u90e8\u54c1<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30af\u30ed\u30c3\u30af\u30b5\u30a4\u30af\u30eb\u3042\u305f\u308a1\u30d3\u30c3\u30c8<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30af\u30ed\u30c3\u30af\u30b5\u30a4\u30af\u30eb\u3042\u305f\u308a2\u30d3\u30c3\u30c8\uff08\u5e2f\u57df\u5e45\u304c2\u500d\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u4fe1\u53f7\u5bfe\u30ce\u30a4\u30ba\u6bd4\uff08SNR\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u30ce\u30a4\u30ba\u306b\u5f37\u3044\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044\uff08\u30ce\u30a4\u30ba\u306b\u5f31\u3044\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u7387\uff08BER\uff09<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044\uff08\u30a8\u30e9\u30fc\u8a02\u6b63\u304c\u5fc5\u8981\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u8907\u96d1\u3055<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30b7\u30f3\u30d7\u30eb\u3067\u30b3\u30b9\u30c8\u52b9\u7387\u304c\u9ad8\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u8907\u96d1\u3067\u30b3\u30b9\u30c8\u304c\u9ad8\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u6d88\u8cbb\u96fb\u529b<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4f4e\u3044<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9ad8\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u4f1d\u9001\u8ddd\u96e2<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u9577\u3044<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u77ed\u3044<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u62e1\u5f35\u6027<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u73fe\u5728\u306e\u30cb\u30fc\u30ba\u306b\u9069\u3057\u3066\u3044\u307e\u3059<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5c06\u6765\u7684\u306a\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306b\u5bfe\u5fdc\u53ef\u80fd\u3067\u3059<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udca1 <strong>\u30d2\u30f3\u30c8:<\/strong> \u4f4e\u901f\u307e\u305f\u306f\u9577\u8ddd\u96e2\u4f1d\u9001\u3067\u30b7\u30f3\u30d7\u30eb\u304b\u3064\u5b89\u4fa1\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u6c42\u3081\u308b\u5834\u5408\u306fNRZ\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6700\u9ad8\u306e\u901f\u5ea6\u3068\u5c06\u6765\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u62e1\u5f35\u3092\u6c42\u3081\u308b\u5834\u5408\u306fPAM4\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 LINK-PP\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\uff1aNRZ\u304a\u3088\u3073PAM4\u306b\u3088\u308b\u9ad8\u6027\u80fd\u5b9f\u73fe<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630.webp\" alt=\"LINK-PP\" class=\"wp-image-5812\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630-300x169.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630-1024x576.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630-768x432.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/99c1c5c4a1e24fe7ab4c7a9236a91630-18x10.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u9069\u5207\u306a <strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong> \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6027\u80fd\u306b\u3068\u3063\u3066\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002. <strong>LINK-PP<\/strong> \u306f\u3001NRZ\u304a\u3088\u3073\u5148\u9032\u7684\u306aPAM4\u5909\u8abf\u306e\u4e21\u65b9\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5305\u62ec\u7684\u306a\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>NRZ\u7528\u9014\u5411\u3051\uff1a<\/strong> \u4fe1\u983c\u6027\u304c\u9ad8\u304f\u30b3\u30b9\u30c8\u52b9\u7387\u306b\u512a\u308c\u305f <strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong> \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u3001\u5f53\u793e\u306e <strong>LINK-PP SFP-25G-SR <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473141.htm\"><strong>LS-MM8525-S1C<\/strong><\/a> \u307e\u305f\u306f <strong>LINK-PP QSFP28-100G-SR4<\/strong> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473115.htm\"><strong>LQ-M85100-SR4C<\/strong><\/a> \u306f\u300110G\uff0f25G\uff0f100G\uff084\u00d725G\uff09\u5c55\u958b\u5411\u3051\u306b\u30011\u30ec\u30fc\u30f3\u3042\u305f\u308a25G\u306e\u5805\u7262\u306aNRZ\u6027\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>\u9ad8\u901fPAM4\u7528\u9014\u5411\u3051\uff1a<\/strong> \u5f53\u793e\u306e\u6700\u5148\u7aefPAM4 <strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong> \u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u4fe1\u53f7\u5b8c\u5168\u6027\u306e\u8ab2\u984c\u3092\u514b\u670d\u3059\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p><ul><li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/470377.htm\"><strong>LINK-PP LQD-CW400-DR4C:<\/strong><\/a> 4\u00d7100G PAM4 \u3092\u7528\u3044\u305f400G\u77ed\u8ddd\u96e2\u5358\u4e00\u30e2\u30fc\u30c9\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u5411\u3051\u306b\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3092\u4ecb\u3057\u3066\u5e83\u7bc4\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>LINK-PP \u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb<\/strong><\/a> \u9ad8\u5ea6\u306aDSP\u304a\u3088\u3073\u5f37\u529b\u306aFEC\uff08\u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff09\u3092\u63a1\u7528\u3057\u3001\u8981\u6c42\u3055\u308c\u308bPAM4\u74b0\u5883\u306b\u304a\u3044\u3066\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u9ad8\u6027\u80fd\u306a\u63a5\u7d9a\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u6b21\u4e16\u4ee3\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u304a\u3088\u3073AI\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u672a\u6765\u306f\u30de\u30eb\u30c1\u30ec\u30d9\u30eb\u3078<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NRZ\u306f\u4f9d\u7136\u3068\u3057\u3066\u91cd\u8981\u3067\u3059\u304c\u3001\u9ad8\u901f\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306e\u5c06\u6765\u306f\u660e\u78ba\u306bPAM4\u3078\u3001\u3055\u3089\u306b\u306f\u3088\u308a\u8907\u96d1\u306a\u5909\u8abf\u65b9\u5f0f\uff08\u4f8b\uff1aPAM8\u3084PAM16\u306a\u3069\uff09\u3078\u3068\u5411\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f1.6\u30c6\u30e9\u30d3\u30c3\u30c8\u30fb\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u304a\u3088\u3073\u305d\u306e\u5148\u3092\u76ee\u6307\u3059\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002PAM4\u306f\u3001\u30dc\u30fc\u30ec\u30fc\u30c8\u3092\u500d\u5897\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u30922\u500d\u306b\u3059\u308b\u80fd\u529b\u3092\u6301\u3061\u3001\u65e2\u5b58\u306e\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u6d3b\u7528\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002PAM4\u306e\u6210\u529f\u3057\u305f\u5c55\u958b\u306f\u3001\u9ad8\u54c1\u8cea\u306a\u90e8\u54c1\u3068\u9ad8\u5ea6\u306a\u8a2d\u8a08\u306b\u4f9d\u5b58\u3057\u3066\u304a\u308a\u3001\u307e\u3055\u306bLINK-PP\u306e\u3088\u3046\u306a\u9769\u65b0\u4f01\u696d\u304c\u5f97\u610f\u3068\u3059\u308b\u5206\u91ce\u3067\u3059\u3002 <strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong> \u9ad8\u901f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6700\u9069\u5316\u3092\u59cb\u3081\u307e\u3057\u3087\u3046\u304b\uff1f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>NRZ\u3068PAM4\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u73fe\u4ee3\u306e\u9ad8\u5e2f\u57df\u5e45\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u8a2d\u8a08\u30fb\u904b\u7528\u3059\u308b\u4e0a\u3067\u57fa\u672c\u7684\u306a\u8981\u7d20\u3067\u3059\u3002\u5f93\u6765\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u884c\u3046\u5834\u5408\u3067\u3082\u3001\u6700\u5148\u7aef\u306eAI\u30af\u30e9\u30b9\u30bf\u30fc\u3092\u5c55\u958b\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u9069\u5207\u306a\u5909\u8abf\u65b9\u5f0f\u3068\u9069\u5207\u306a\u30d1\u30fc\u30c8\u30ca\u30fc\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u901f\u30c7\u30fc\u30bf\u4f1d\u9001\u306b\u304a\u3044\u3066\u3001PAM4\u304cNRZ\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u308b\u7406\u7531\u306f\u4f55\u3067\u3059\u304b\uff1f <strong>\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong> PAM4\u3067\u306f1\u30b7\u30f3\u30dc\u30eb\u3042\u305f\u308a2\u30d3\u30c3\u30c8\u3092\u9001\u4fe1\u3067\u304d\u308b\u305f\u3081\u3001\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c2\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001NRZ\u3067\u306f1\u30b7\u30f3\u30dc\u30eb\u3042\u305f\u308a1\u30d3\u30c3\u30c8\u306e\u307f\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002PAM4\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308b\u901f\u5ea6\u5411\u4e0a\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u6700\u3082\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<div><div widgetid=\"3ef779ac451211f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"3ef779ac451211f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u3088\u304f\u3042\u308b\u8cea\u554f<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >PAM4\u306f\u5e38\u306bNRZ\u3088\u308a\u3082\u6d88\u8cbb\u96fb\u529b\u304c\u5927\u304d\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PAM4\u306f\u901a\u5e38\u3001\u3088\u308a\u591a\u304f\u306e\u96fb\u529b\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u30a8\u30e9\u30fc\u8a02\u6b63\u304a\u3088\u3073\u4fe1\u53f7\u51e6\u7406\u306e\u305f\u3081\u306b\u8ffd\u52a0\u306e\u56de\u8def\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u3067\u3059\u3002NRZ\u306f\u8a2d\u8a08\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u3042\u308b\u305f\u3081\u3001\u6d88\u8cbb\u96fb\u529b\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >PAM4\u3068NRZ\u306e\u3069\u3061\u3089\u304c\u8a2d\u7f6e\u3057\u3084\u3059\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">NRZ\u306e\u65b9\u304c\u8a2d\u7f6e\u304c\u5bb9\u6613\u3067\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u4f7f\u7528\u3057\u3001\u8abf\u6574\u3082\u5c11\u306a\u304f\u3066\u6e08\u307f\u307e\u3059\u3002\u4e00\u65b9\u3001PAM4\u306f\u30ce\u30a4\u30ba\u3084\u30a8\u30e9\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u3001\u3088\u308a\u591a\u304f\u306e\u8a2d\u5b9a\u4f5c\u696d\u3068\u614e\u91cd\u306a\u8a2d\u8a08\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067PAM4\u3068NRZ\u3092\u4f75\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u306f\u3044\u3001\u4e21\u8005\u3092\u6df7\u5728\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u53e4\u3044\u8a2d\u5099\u3084\u9577\u8ddd\u96e2\u30ea\u30f3\u30af\u306b\u306fNRZ\u3092\u3001\u65b0\u3057\u3044\u9ad8\u901f\u63a5\u7d9a\u306b\u306fPAM4\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6bb5\u968e\u7684\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u9577\u8ddd\u96e2\u4f1d\u9001\u306b\u306fPAM4\u3068NRZ\u306e\u3069\u3061\u3089\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9577\u8ddd\u96e2\u4f1d\u9001\u306b\u306fNRZ\u306e\u65b9\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002NRZ\u306f\u30ce\u30a4\u30ba\u306b\u5f37\u304f\u3001\u4fe1\u53f7\u3092\u660e\u77ad\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e00\u65b9\u3001PAM4\u306f\u901f\u5ea6\u5411\u4e0a\u304c\u6c42\u3081\u3089\u308c\u308b\u77ed\uff5e\u4e2d\u8ddd\u96e2\u30ea\u30f3\u30af\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u9577\u8ddd\u96e2\u4f1d\u9001\u306b\u306f\u3001PAM4\u3068NRZ\u306e\u3069\u3061\u3089\u304c\u512a\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">NRZ\u306f\u9577\u8ddd\u96e2\u4f1d\u9001\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u30ce\u30a4\u30ba\u306b\u5f37\u304f\u3001\u4fe1\u53f7\u3092\u660e\u77ad\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002PAM4\u306f\u3001\u3088\u308a\u9ad8\u901f\u306a\u4f1d\u9001\u304c\u5fc5\u8981\u306a\u77ed\uff5e\u4e2d\u8ddd\u96e2\u30ea\u30f3\u30af\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>PAM4 vs NRZ\uff1a\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u3001\u30ce\u30a4\u30ba\u8010\u6027\u3001\u304a\u3088\u3073\u52b9\u7387\u3092\u6bd4\u8f03\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306b\u6700\u9069\u306a\u5909\u8abf\u65b9\u5f0f\u3092\u9078\u629e\u3057\u307e\u3059\u3002.<\/p>","protected":false},"author":1,"featured_media":5807,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5813","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/5813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/comments?post=5813"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/5813\/revisions"}],"predecessor-version":[{"id":11381,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/5813\/revisions\/11381"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media\/5807"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media?parent=5813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/categories?post=5813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/tags?post=5813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}