{"id":5577,"date":"2025-08-02T00:00:00","date_gmt":"2025-08-02T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/fec-forward-error-correction-in-optical-communication\/"},"modified":"2026-06-22T08:42:28","modified_gmt":"2026-06-22T08:42:28","slug":"fec-forward-error-correction-in-optical-communication","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/fec-forward-error-correction-in-optical-communication","title":{"rendered":"\u5149\u901a\u4fe1\u306b\u304a\u3051\u308bFEC\uff08\u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff09\u3068\u306f\uff1f"},"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\/9d91539e3f2f4415994b3a16805190dd.jpg\" alt=\"What Is FEC?\" class=\"wp-image-5576\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff08FEC\uff09<\/strong> \u306f\u3001\u73fe\u4ee3\u306e\u5149\u901a\u4fe1\u30b7\u30b9\u30c6\u30e0\u3001\u7279\u306b\u9577\u8ddd\u96e2\u306b\u308f\u305f\u308b\u9ad8\u901f\u30c7\u30fc\u30bf\u4f1d\u9001\u306b\u304a\u3044\u3066\u6975\u3081\u3066\u91cd\u8981\u306a\u57fa\u76e4\u6280\u8853\u3067\u3059\u3002\u518d\u9001\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u53d7\u4fe1\u5074\u304c\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3057\u8a02\u6b63\u3067\u304d\u308b\u305f\u3081\u3001\u30c7\u30fc\u30bf\u306e\u5b8c\u5168\u6027\u3092\u9ad8\u3081\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u5149\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4fe1\u983c\u6027\u3001\u52b9\u7387\u6027\u3001\u304a\u3088\u3073\u6027\u80fd\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u3067\u306f\u3001FEC\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u52d5\u4f5c\u539f\u7406\u3001\u4f7f\u7528\u3055\u308c\u308b\u7b26\u53f7\u306e\u7a2e\u985e\u3001\u304a\u3088\u3073 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\u30aa\u30d7\u30c6\u30a3\u30ab\u30eb\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/a>, \u306b\u304a\u3051\u308b\u5f79\u5272\u3001\u4e00\u822c\u7684\u306aEthernet\u898f\u683c\u3001\u304a\u3088\u3073\u5b9f\u969b\u306e\u5c55\u958b\u6642\u306e\u8003\u616e\u4e8b\u9805\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 \u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff08FEC\uff09\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u524d\u65b9\u8aa4\u308a\u8a02\u6b63\uff08FEC\uff09\u3068\u306f\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5197\u9577\u30d3\u30c3\u30c8\u3092\u4ed8\u52a0\u3059\u308b\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u51e6\u7406\u6280\u8853\u3067\u3042\u308a\u3001\u53d7\u4fe1\u5074\u304c\u4f1d\u9001\u30a8\u30e9\u30fc\u3092\u80fd\u52d5\u7684\u306b\u691c\u51fa\u3057\u8a02\u6b63\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u901f\u5149\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08\u4f8b\uff1a25G\u3001100G\u3001200G\u3001400G\uff09\u306b\u304a\u3044\u3066\u3001FEC\u306f\u4ee5\u4e0b\u306e\u70b9\u3067\u4e0d\u53ef\u6b20\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u74b0\u5883\u7684\u307e\u305f\u306f\u6a5f\u68b0\u7684\u30b9\u30c8\u30ec\u30b9\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b <strong>\u30d3\u30c3\u30c8\u8aa4\u308a\u7387\uff08<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>BER<\/strong><\/a><strong>)<\/strong><\/p><\/li><li><p>\u9577\u8ddd\u96e2\u4f1d\u9001\u306e <strong>\u30b5\u30dd\u30fc\u30c8<\/strong><\/p><\/li><li><p>\u901a\u4fe1\u30b0\u30ec\u30fc\u30c9\u74b0\u5883\u306b\u304a\u3051\u308b <strong>\u4fe1\u53f7\u6574\u5408\u6027<\/strong> \u30ce\u30a4\u30ba\u3084\u640d\u5931\u306e\u591a\u3044\u74b0\u5883\u4e0b\u3067\u3082<\/p><\/li><li><p>\u591a\u30d9\u30f3\u30c0\u30fc\u74b0\u5883\u5168\u4f53\u3067 <strong>\u3053\u308c\u3089\u306e\u3044\u305a\u308c\u304b\u304c\u5931\u6557\u3059\u308b\u3068\u3001\u30ea\u30f3\u30af\u304c\u30c0\u30a6\u30f3\u3057\u305f\u307e\u307e\u306b\u306a\u308b\u304b\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/strong> \u306e\u7dad\u6301<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2699\ufe0f FEC\u306e\u52d5\u4f5c\u539f\u7406<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\u306f\u3001\u53b3\u5bc6\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u6570\u5b66\u7684\u898f\u5247\u306b\u57fa\u3065\u304d\u3001\u9001\u4fe1\u30c7\u30fc\u30bf\u306b\u8ffd\u52a0\u30d3\u30c3\u30c8\u3092\u4ed8\u4e0e\u3057\u3066\u7b26\u53f7\u5316\u3057\u307e\u3059\u3002\u53d7\u4fe1\u5074\u306f\u3053\u308c\u3089\u306e\u30d3\u30c3\u30c8\u3092\u7528\u3044\u3066\u3001\u5206\u6563\u3001\u30ce\u30a4\u30ba\u3001\u30af\u30ed\u30b9\u30c8\u30fc\u30af\u306a\u3069\u306e\u4f1d\u9001\u969c\u5bb3\u306b\u3088\u3063\u3066\u751f\u3058\u305f\u9650\u5b9a\u6570\u306e\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3057\u8a02\u6b63\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u4ee3\u8868\u7684\u306aFEC\u7b26\u53f7\u306e\u7a2e\u985e\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u30ea\u30fc\u30c9\u30fb\u30bd\u30ed\u30e2\u30f3\uff08RS\uff09\u7b26\u53f7<\/strong><br\/>Ethernet\u304a\u3088\u3073\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u3067\u5e83\u304f\u7528\u3044\u3089\u308c\u308b\u30d6\u30ed\u30c3\u30af\u7b26\u53f7\u3067\u3059\u3002RS(528,514)\u304a\u3088\u3073RS(544,514)\u69cb\u6210\u306f\u8907\u6570\u306e\u30b7\u30f3\u30dc\u30eb\u30a8\u30e9\u30fc\u3092\u8a02\u6b63\u3067\u304d\u3001\u30d0\u30fc\u30b9\u30c8\u30a8\u30e9\u30fc\u8a02\u6b63\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><li><p><strong>BCH\uff08\u30dc\u30fc\u30ba\u30fb\u30c1\u30e3\u30a6\u30c9\u30a5\u30ea\u30fb\u30db\u30c3\u30b1\u30f3\u30cf\u30a4\u30e0\uff09\u7b26\u53f7<\/strong><br\/>\u4f4e\u9045\u5ef6\u3067\u9ad8\u3044\u8aa4\u308a\u8a02\u6b63\u80fd\u529b\u3092\u63d0\u4f9b\u3059\u308b2\u9032\u7b26\u53f7\u3067\u3042\u308a\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u5236\u7d04\u306e\u3042\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u73fe\u4ee3\u306e <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\/\">PAM4<\/a> \u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u305d\u306e\u4f7f\u7528\u306f\u9650\u5b9a\u7684\u3067\u3059\u3002.<\/p><\/li><li><p><strong>LDPC\uff08\u4f4e\u5bc6\u5ea6\u30d1\u30ea\u30c6\u30a3\u691c\u67fb\uff09\u7b26\u53f7<\/strong><br\/>\u30b7\u30e3\u30ce\u30f3\u9650\u754c\u306b\u8fd1\u3044\u6027\u80fd\u3067\u77e5\u3089\u308c\u3001400G\uff0f800G Ethernet\u304a\u3088\u3073\u30b3\u30d2\u30fc\u30ec\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u9ad8\u3044\u30b7\u30f3\u30dc\u30eb\u8aa4\u308a\u7387\u306b\u5bfe\u3059\u308b\u512a\u308c\u305f\u8a02\u6b63\u80fd\u529b\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u304c\u3001\u3088\u308a\u8907\u96d1\u306a\u30c7\u30b3\u30fc\u30c0\u3092\u5fc5\u8981\u3068\u3057\u3001\u9045\u5ef6\u3082\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\ud83d\udd0d \u4f8b\uff1a<\/strong><\/p><p>100G\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\uff08\u4f8b\uff1a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488452.htm\"><strong>100GBASE-LR4<\/strong><\/a>, \uff09\u3067\u306f\u3001\u9577\u8ddd\u96e2\u5149\u30d5\u30a1\u30a4\u30d0\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u5149\u5b66\u7684\u52a3\u5316\u3092\u88dc\u511f\u3059\u308b\u305f\u3081\u306bRS-FEC\uff08\u901a\u5e38\u306fRS(528,514)\uff09\u304c\u63a1\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u751f\u306e\u524dFEC\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u7387\uff08BER\uff09\u304c10\u207b\u00b3\u7a0b\u5ea6\u3067\u3042\u3063\u3066\u3082\u3001FEC\u5f8cBER\u76ee\u6a19\u502410\u207b\u00b9\u00b2\u4ee5\u4e0a\u3092\u9054\u6210\u3067\u304d\u307e\u3059\u3002.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83e\udde9 \u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u306b\u304a\u3051\u308bFEC\u306e\u91cd\u8981\u6027<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\u306f\u3001 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30e9\u30a4\u30f3\u30ca\u30c3\u30d7\u3092<\/a>, \u3001\u7279\u306b25Gbps\u4ee5\u4e0a\u3067\u306e\u4f1d\u9001\u306b\u304a\u3044\u3066\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u4ee5\u4e0b\u304c\u5b9f\u73fe\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 \u9577\u8ddd\u96e2\u30d5\u30a1\u30a4\u30d0\u4f1d\u9001\u306b\u304a\u3051\u308b\u4fe1\u983c\u6027\u3042\u308b\u52d5\u4f5c<\/p><\/li><li><p>\u2705 \u4f4e\u54c1\u8cea\u306a\u5149\u90e8\u54c1\u3068\u306e\u4e92\u63db\u6027<\/p><\/li><li><p>\u2705 \u7570\u306a\u308b\u30d9\u30f3\u30c0\u30fc\u88fd\u6a5f\u5668\u9593\u306e\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u76f8\u4e92\u904b\u7528\u6027<\/p><\/li><li><p>\u2705 \u53b3\u683c\u306aBER\u76ee\u6a19\u306e\u9054\u6210\uff08\u7279\u306b <strong>PAM4<\/strong> \u5909\u8abf\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\uff09<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\u306f\u3001\u7269\u7406\u7684\u306a\u5236\u9650\u3092\u30c7\u30b8\u30bf\u30eb\u88dc\u6b63\u3067\u88dc\u3046\u3053\u3068\u3067\u3001\u30b3\u30b9\u30c8\u52b9\u7387\u306e\u826f\u3044\u5149\u90e8\u54c1\u306e\u4f7f\u7528\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001, <strong>FEC\u9045\u5ef6<\/strong> \u304a\u3088\u3073\u63a1\u7528\u3055\u308c\u308bFEC\u306e\u7a2e\u985e\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u8981\u4ef6\u304a\u3088\u3073\u5bfe\u5fdc\u3059\u308b\u898f\u683c\u3068\u6574\u5408\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udccf \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306aFEC\u898f\u683c<\/h2>\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>\u6a19\u6e96<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>FEC\u30bf\u30a4\u30d7<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u5fdc\u7528<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3bj<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBASE-CR4\u3001100GBASE-KR4\uff08NRZ\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3by<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25GBASE-CR-S\uff08NRZ\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3cd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>KP4-FEC\uff08RS(544,514)\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>50G\u3001100G\u3001200G\uff08PAM4\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>100G Lambda MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(544,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4\u65b9\u5f0f100G\u5358\u4e00\u30ec\u30fc\u30f3\u5149\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/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\udd0e <strong>\u6ce8\u8a18<\/strong>\uff1aRS(544,514)\uff08KP4-FEC\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u306f\u3001\u30b7\u30f3\u30dc\u30eb\u8aa4\u308a\u7387\u304c\u672c\u8cea\u7684\u306b\u9ad8\u3044PAM4\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u306b\u5fc5\u8981\u3068\u3055\u308c\u308b\u3088\u308a\u5f37\u529b\u306aFEC\u5909\u7a2e\u3067\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30ea\u30f3\u30af\u3067\u306f\u3001FEC\u306e\u7121\u52b9\u5316\u306f\u898f\u683c\u4e0a\u4e00\u822c\u306b\u8a31\u53ef\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u26a0\ufe0f FEC\u5c55\u958b\u306b\u304a\u3051\u308b\u4e3b\u8981\u306a\u691c\u8a0e\u4e8b\u9805<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>FEC\u306f\u3001\u5149\u30ea\u30f3\u30af\u306e\u4e21\u7aef\u3067\u6709\u52b9\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/strong> \u8a2d\u5b9a\u306e\u4e0d\u4e00\u81f4\uff08\u4f8b\uff1a\u7247\u65b9\u306e\u7aef\u306e\u307fFEC\u6709\u52b9\u3001\u4ed6\u65b9\u306f\u7121\u52b9\uff09\u306f\u3001\u30ea\u30f3\u30af\u78ba\u7acb\u306e\u5931\u6557\u3084\u9ad8BER\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p><\/li><li><p><strong>PAM4\u65b9\u5f0f\u30b7\u30b9\u30c6\u30e0\uff08\u4f8b\uff1a<\/strong>, 100G DR\u3001200G FR4\u3001400G DR4\u306a\u3069\uff09\u306f\u3001, <strong>\u6700\u4f4eBER\u76ee\u6a19\u3092\u6e80\u305f\u3059\u305f\u3081\u306bFEC\u3092<\/strong> \u5fc5\u9808\u3068\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3088\u308a\u9ad8\u5bc6\u5ea6\u306a\u5909\u8abf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002.<\/p><\/li><li><p><strong>FEC\u306f\u9045\u5ef6\u3092\u8ffd\u52a0\u3057\u307e\u3059<\/strong> \uff08\u4f8b\uff1aKP4-FEC\u3067\u306f\u7d04100ns\uff5e200ns\uff09\u3002\u3053\u308c\u306f\u3001\u9045\u5ef6\u306b\u654f\u611f\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u9855\u8457\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p><\/li><li><p><strong>FEC\u5f8cBER vs. FEC\u524dBER<\/strong>\uff1a\u307b\u3068\u3093\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u4ed5\u69d8\u306fFEC\u5f8cBER\u3092\u57fa\u6e96\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u533a\u5225\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u6027\u80fd\u8a55\u4fa1\u306b\u304a\u3044\u3066\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd0c LINK-PP\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u304a\u3051\u308bFEC\u5bfe\u5fdc\u72b6\u6cc1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u79c1\u305f\u3061\u306f\u3053\u308c\u3089\u306e\u6280\u8853\u7684\u9032\u6b69\u3092\u5bc6\u63a5\u306b\u8ffd\u3063\u3066\u304a\u308a\u3001\u5805\u7262\u306a\u71b1\u8a2d\u8a08\u3068\u30cf\u30a6\u30b8\u30f3\u30b0\u306e\u6574\u5408\u6027\u3092\u91cd\u8996\u3059\u308b\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u3068\u30d1\u30fc\u30c8\u30ca\u30fc\u30b7\u30c3\u30d7\u3092\u7d44\u3093\u3067\u3044\u307e\u3059\u3002\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3092\u9ad8\u901f\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u3001\u307e\u305f\u306fOSFP\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u65b0\u3057\u3044AI\u5bfe\u5fdc\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u69cb\u7bc9\u3059\u308b\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u3001LINK-PP\u306b\u4fe1\u983c\u3057\u3066\u3044\u305f\u3060\u3051\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\"><strong>LINK-PP<\/strong><\/a>, \u3001\u5f53\u793e\u306e\u591a\u304f\u306e\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u306f\u3001IEEE\u304a\u3088\u3073MSA\u898f\u683c\u306b\u308f\u305f\u308b\u5b8c\u5168\u306aFEC\u4e92\u63db\u6027\u3092\u5099\u3048\u3066\u8a2d\u8a08\u3055\u308c\u3066\u3044\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>\u88fd\u54c1\u4f8b<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u5bfe\u5fdcFEC<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u7528\u9014\u4f8b<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28-page2.htm?ca=1469&amp;cv=8172\">25G SFP28 SR<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u77ed\u8ddd\u96e2\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u63a5\u7d9a<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473140.htm\">- \u30ea\u30bf\u30fc\u30f3\u30fb\u30e9\u30b9\u304c30dB\u4ee5\u4e0a\u78ba\u4fdd\u3055\u308c\u3001\u30af\u30e9\u30a6\u30c9\u3084\u30c8\u30fc\u30c1\u30f3\u30b0\u306e\u9ad8\u5ea6\u306a\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306b\u6700\u9069\u3067\u3059\u3002<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)\uff0f\u30aa\u30d7\u30b7\u30e7\u30f3KP4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2 km PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm\">400G OSFP DR4<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>KP4-FEC\uff08RS(544,514)\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>500m\uff5e2km\u306ePAM4\u30ea\u30f3\u30af<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u3079\u3066\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u76f8\u4e92\u904b\u7528\u6027\u3001FEC\u8010\u6027\u3001\u304a\u3088\u3073\u7269\u7406\u30fb\u96fb\u6c17\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u4ed5\u69d8\u3078\u306e\u9069\u5408\u6027\u306b\u3064\u3044\u3066\u30c6\u30b9\u30c8\u6e08\u307f\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2753 \u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q1\uff1aFEC\u306f\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u5074\u3067\u51e6\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3001\u305d\u308c\u3068\u3082\u30db\u30b9\u30c8\u5074\u3067\u51e6\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/strong><br\/>A\uff1aFEC\u306f\u901a\u5e38\u3001\u30db\u30b9\u30c8\u30c7\u30d0\u30a4\u30b9\uff08\u4f8b\uff1a\u30b9\u30a4\u30c3\u30c1MAC\uff0f<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-phy-physical-layer-basics-explained\/\">PHY<\/a>\uff09\u5185\u3067\u5b9f\u88c5\u3055\u308c\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u306fFEC\u30ed\u30b8\u30c3\u30af\u306f\u5185\u8535\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001FEC\u5bfe\u5fdc\u4fe1\u53f7\u3068\u306e\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q2\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067FEC\u3092\u7121\u52b9\u5316\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><br\/>A\uff1a\u72b6\u6cc1\u306b\u3088\u308a\u307e\u3059\u3002NRZ\u30ea\u30f3\u30af\uff08\u4f8b\uff1a, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">10G SFP+<\/a>\uff09\u3067\u306f\u3001FEC\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001PAM4\u30d9\u30fc\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6a19\u6e96\u306b\u3088\u308aFEC\u304c\u5fc5\u9808\u3068\u3055\u308c\u3066\u304a\u308a\u3001\u7121\u52b9\u5316\u3059\u308b\u3068\u30ea\u30f3\u30af\u304c\u4f7f\u7528\u4e0d\u80fd\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\u306f\u3082\u306f\u3084\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u306f\u306a\u304f\u3001\u7279\u306bPAM4\u304a\u3088\u3073\u30c6\u30e9\u30d3\u30c3\u30c8\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30bf\u30fc\u30b3\u30cd\u30af\u30c8\u3078\u3068\u62e1\u5f35\u3057\u3066\u3044\u304f\u4e2d\u3067\u3001\u9ad8\u901f\u5149\u901a\u4fe1\u306e\u6574\u5408\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u3082\u306e\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u304a\u5ba2\u69d8\u304c <strong>25G<\/strong> Ethernet\u3092\u5c55\u958b\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u3042\u308b\u3044\u306f <strong>800G\u3078\u3068\u30b9\u30b1\u30fc\u30eb\u30a2\u30c3\u30d7\u3059\u308b\u5834\u5408\u3067\u3082<\/strong>, \u3001FEC\u306e\u52d5\u4f5c\u539f\u7406\u3092\u7406\u89e3\u3057\u3001\u5fc5\u8981\u306aFEC\u898f\u683c\u3092\u5b8c\u5168\u306b\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u9078\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9577\u671f\u7684\u306a\u5b89\u5b9a\u6027\u3001\u4e92\u63db\u6027\u3001\u304a\u3088\u3073\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udd27 <strong>\u5c0e\u5165\u6642\u306e\u30d2\u30f3\u30c8<\/strong>\uff1a\u30ea\u30f3\u30af\u306e\u4e21\u7aef\u3067FEC\u8a2d\u5b9a\u3092\u4e00\u8cab\u3057\u3066\u6709\u52b9\u5316\u307e\u305f\u306f\u7121\u52b9\u5316\u3059\u308b\u3088\u3046\u5e38\u306b\u78ba\u8a8d\u3057\u3001\u30df\u30b9\u30de\u30c3\u30c1\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e0d\u5b89\u306a\u5834\u5408\u306f\u3001\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u304a\u3088\u3073\u30b9\u30a4\u30c3\u30c1\u306e\u69cb\u6210\u30ac\u30a4\u30c9\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u307e\u305f\u53c2\u7167<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/erbium-doped-fiber-amplifier-optical-networks\/\">\u5149\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308bEDFA\u306e\u5f79\u5272\u306e\u7406\u89e3<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/how-optical-transceivers-transmit-data\/\">\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u3092\u7528\u3044\u305f\u30c7\u30fc\u30bf\u4f1d\u9001\u306e\u30d7\u30ed\u30bb\u30b9<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/filter-fwdm-optical-networks-applications\/\">FWDM\u30d5\u30a3\u30eb\u30bf\u306e\u63a2\u6c42\u3068\u305d\u306e\u5149\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u5f71\u97ff<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/knowledge-center\/optical-transceivers-vs-fiber-converters\/\">\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u3068\u30d5\u30a1\u30a4\u30d0\u30e1\u30c7\u30a3\u30a2\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u6bd4\u8f03<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" 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