{"id":3451,"date":"2025-12-04T14:59:00","date_gmt":"2025-12-04T14:59:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/decision-feedback-equalizer-dfe-technical-overview\/"},"modified":"2026-06-22T04:19:57","modified_gmt":"2026-06-22T04:19:57","slug":"decision-feedback-equalizer-dfe-technical-overview","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/decision-feedback-equalizer-dfe-technical-overview","title":{"rendered":"\u6c7a\u5b9a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30a4\u30b3\u30e9\u30a4\u30b6 (DFE) \u306e\u6df1\u5c64\u89e3\u6790"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-1024x608.webp\" alt=\"A Deep Dive into the Decision Feedback Equalizer (DFE)\" class=\"wp-image-3447\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u901f\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\uff08\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c25 Gbps\u300150 Gbps\u3001\u3055\u3089\u306b\u306f\u305d\u308c\u3092\u8d85\u3048\u308b\u9818\u57df\u306b\u9054\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\uff09\u306b\u304a\u3044\u3066\u306f\u3001\u4f1d\u9001\u4fe1\u53f7\u306e\u6574\u5408\u6027\u304c\u3001\u7269\u7406\u30c1\u30e3\u30cd\u30eb\uff08PCB\u306e\u30c8\u30ec\u30fc\u30b9\u3001\u9285\u30b1\u30fc\u30d6\u30eb\u306a\u3069\uff09\u306b\u3088\u3063\u3066\u7d76\u3048\u305a\u8105\u304b\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u8ab2\u984c\u306f\u4e3b\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u73fe\u308c\u307e\u3059\uff1a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/intersymbol-interference-isi-in-digital-communication-explained\/\"><strong>\u30a4\u30f3\u30bf\u30fc\u30b7\u30f3\u30dc\u30eb\u5e72\u6e09\uff08ISI\uff09<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ISI\u3068\u306f\u3001\u73fe\u5728\u9001\u4fe1\u4e2d\u306e\u30c7\u30fc\u30bf\u30b7\u30f3\u30dc\u30eb\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u300c\u6f0f\u308c\u51fa\u3057\u300d\u3001\u5f8c\u7d9a\u30b7\u30f3\u30dc\u30eb\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3092\u59a8\u5bb3\u3059\u308b\u73fe\u8c61\u3067\u3059\u3002\u3053\u306e\u73fe\u8c61\u306f\u3001 <strong>\u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0<\/strong> \u306e\u9ad8\u3055\u304a\u3088\u3073\u5e45\u306e\u4e21\u65b9\u3092\u72ed\u3081\u308b\u3053\u3068\u3067\u52a3\u5316\u3055\u305b\u3001 elevated\uff08\u4e0a\u6607\u3057\u305f\uff09 <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>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3001 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">\u9023\u7d9a\u6642\u9593\u30ea\u30cb\u30a2\u30a4\u30b3\u30e9\u30a4\u30b6\uff08CTLE\uff09<\/a> \u306f\u5468\u6ce2\u6570\u4f9d\u5b58\u306e\u6e1b\u8870\uff08\u30c1\u30e3\u30cd\u30eb\u640d\u5931\uff09\u3092\u88dc\u511f\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u52b9\u679c\u7684\u3067\u3059\u304c\u3001\u30ce\u30a4\u30ba\u5897\u5e45\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u5927\u6027\u80fd\u306e\u5b9f\u73fe\u304a\u3088\u3073\u6b8b\u7559\u3059\u308b\u9577\u5c3e\u578bISI\u306e\u5b8c\u5168\u9664\u53bb\u306e\u305f\u3081\u306b\u306f\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u3001, <strong>\u975e\u7dda\u5f62<\/strong> \u89e3\u6c7a\u7b56\u304c\u5fc5\u8981\u3067\u3059\uff1a <strong>\u30c7\u30a3\u30b7\u30b8\u30e7\u30f3\u30fb\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30fb\u30a4\u30b3\u30e9\u30a4\u30b6\uff08DFE\uff09<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \u30c7\u30a3\u30b7\u30b8\u30e7\u30f3\u30fb\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30fb\u30a4\u30b3\u30e9\u30a4\u30b6\uff08DFE\uff09\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u30c7\u30a3\u30b7\u30b8\u30e7\u30f3\u30fb\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30fb\u30a4\u30b3\u30e9\u30a4\u30b6\uff08DFE\uff09<\/strong> DFE\u306f\u3001\u9ad8\u901f\u30b7\u30ea\u30a2\u30eb\u30ea\u30f3\u30af\u304a\u3088\u3073\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u306b\u304a\u3044\u3066\u3001 <strong>\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30eb\u30fb\u30a4\u30f3\u30bf\u30fc\u30b7\u30f3\u30dc\u30eb\u5e72\u6e09\uff08ISI\uff09<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3092\u9664\u53bb\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u308b\u30c7\u30b8\u30bf\u30eb\u307e\u305f\u306f\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30eb\u65b9\u5f0f\u306e\u30a4\u30b3\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u6280\u8853\u3067\u3059\u3002CTLE\u306a\u3069\u306e\u7dda\u5f62\u30a4\u30b3\u30e9\u30a4\u30b6\u306f\u30a2\u30ca\u30ed\u30b0\u9818\u57df\u3067\u52d5\u4f5c\u3057\u307e\u3059\u304c\u3001, <strong>DFE\u306f\u4fe1\u53f7\u304c\u30c7\u30b8\u30bf\u30eb\u30b7\u30f3\u30dc\u30eb\u306b\u30b9\u30e9\u30a4\u30b9\u3055\u308c\u305f\u5f8c\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/strong>, \u4ee5\u524d\u306e\u30b7\u30f3\u30dc\u30eb\u5224\u5b9a\u7d50\u679c\u3092\u7528\u3044\u3066\u3001\u904e\u53bb\u306e\u30d3\u30c3\u30c8\u304c\u5f8c\u306e\u30d3\u30c3\u30c8\u306b\u53ca\u307c\u3059\u5e72\u6e09\u306b\u3088\u308b\u6b6a\u307f\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\u306f\u3001\u73fe\u4ee3\u306eSerDes\u53d7\u4fe1\u6a5f\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u30d6\u30ed\u30c3\u30af\u3068\u306a\u308a\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> \uff08SFP+\u3001SFP28\u3001QSFP28\u3001\u304a\u3088\u3073100G\/200G\/400G\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u3092\u542b\u3080\uff09\u306b\u304a\u3044\u3066\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 DFE\u304c\u5fc5\u8981\u306a\u7406\u7531 \u2014 \u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\u306e\u7406\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 ISI\u3068\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/intersymbol-interference-isi-in-digital-communication-explained\/\">\u30a4\u30f3\u30bf\u30fc\u30b7\u30f3\u30dc\u30eb\u5e72\u6e09<\/a> \u3068\u306f\u3001\u5e2f\u57df\u5236\u9650\u3001\u53cd\u5c04\u3001\u307e\u305f\u306f\u5206\u6563\u306b\u3088\u308a\u3001\u3042\u308b\u30d3\u30c3\u30c8\u306e\u6ce2\u5f62\u306e\u672b\u5c3e\u304c\u6b21\u306e\u30d3\u30c3\u30c8\u671f\u9593\u306b\u91cd\u306a\u308b\u3053\u3068\u3067\u751f\u3058\u308b\u73fe\u8c61\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\uff08DFE\u304c\u89e3\u6c7a\u3059\u308b\u6838\u5fc3\u7684\u8ab2\u984c\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\u3068\u306f\u3001 <strong>\u904e\u53bb\u306e\u30d3\u30c3\u30c8\u304c\u73fe\u5728\u306e\u30d3\u30c3\u30c8\u306b\u5e72\u6e09\u3059\u308b\u3053\u3068<\/strong> \u306b\u3088\u3063\u3066\u53d7\u4fe1\u6a5f\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30c8\u3067\u751f\u3058\u308b\u6b6a\u307f\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u6b6a\u307f\u306f\u4ee5\u4e0b\u306e\u5f71\u97ff\u3092\u53ca\u307c\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30a2\u30a4\u30fb\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u306e\u9ad8\u3055\u3092\u7e2e\u5c0f<\/p><\/li>\n\n\n\n<li><p>\u6c7a\u5b9a\u3057\u304d\u3044\u5024\u3092\u30b7\u30d5\u30c8<\/p><\/li>\n\n\n\n<li><p>\u30d3\u30c3\u30c8\u8aa4\u308a\u7387\uff08BER\uff09\u3092\u5897\u52a0<\/p><\/li>\n\n\n\n<li><p>CTLE\u306a\u3069\u306e\u30a2\u30ca\u30ed\u30b0\u30a4\u30b3\u30e9\u30a4\u30b6\u3067\u306f\u5b8c\u5168\u306b\u88dc\u6b63\u3067\u304d\u307e\u305b\u3093\u3002<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \u9ad8\u901f\u30ea\u30f3\u30af\u304cDFE\u3092\u5fc5\u8981\u3068\u3059\u308b\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c25G\u300150G\u3001<br>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491583.htm\">100G PAM4<\/a> \u305d\u3057\u3066\u305d\u308c\u4ee5\u4e0a\u306b\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30c1\u30e3\u30cd\u30eb\u306e\u9045\u5ef6\u304a\u3088\u3073\u5e2f\u57df\u5e45\u5236\u9650\u306b\u3088\u308a\u3001\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\u304c\u306f\u308b\u304b\u306b\u6df1\u523b\u306b\u306a\u308a\u307e\u3059\u3002<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\u306f\u3001\u3053\u306e\u7279\u5b9a\u306e\u6b6a\u307f\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\u3059\u308b\u305f\u3081\u306e\u6700\u3082\u52b9\u679c\u7684\u306a\u6280\u8853\u3067\u3059\u3002\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u305d\u308c\u306f <strong>\u975e\u7dda\u5f62\u3067\u3042\u308a\u3001<br><\/strong>, \u6b21\u306e\u3082\u306e\u3068\u306f\u7570\u306a\u308a\u307e\u3059\uff1a<br> <a href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\" target=\"_blank\" rel=\"\">CTLE<br><\/a> \u307e\u305f\u306f <a href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/ffe-feed-forward-equalizer-complete-guide\/\" target=\"_blank\" rel=\"\">FFE<br><\/a><\/p><\/li>\n\n\n\n<li><p>\u5b9f\u969b\u306e\u5224\u5b9a\u306b\u57fa\u3065\u3044\u3066\u9069\u5fdc\u3057\u307e\u3059\u3002<br><\/p><\/li>\n\n\n\n<li><p>\u30ce\u30a4\u30ba\u3084\u9ad8\u5468\u6ce2\u30b8\u30c3\u30bf\u3092\u5897\u5e45\u3057\u307e\u305b\u3093\u3002<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u305f\u3081\u3001DFE\u306f\u73fe\u4ee3\u306e\u9ad8\u901f\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u53d7\u4fe1\u6a5f\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002<br>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \u9ad8\u901f\u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u306b\u304a\u3051\u308bDFE<br><\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3.webp\" alt=\" SFP+, SFP28, QSFP+, QSFP28, QSFP56 Optical modules\" class=\"wp-image-3448\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u3088\u3046\u306a\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\uff1a<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\"><strong>SFP+<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\"><strong>SFP28<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\"><strong>QSFP+<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\"><strong>QSFP28<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\"><strong>\u30d0\u30c3\u30af\u30cf\u30a4\u30e9\u30a6\u30f3\u30c9<\/strong><\/a><strong>, \u304a\u3088\u3073 <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491583.htm\"><strong>100G-PAM4\u30e2\u30b8\u30e5\u30fc\u30eb<br><\/strong><\/a> \u306f\u3001\u30d5\u30a1\u30a4\u30d0\u5206\u6563\u3001PCB\u640d\u5931\u3001\u30b3\u30cd\u30af\u30bf\u53cd\u5c04\u4e0b\u3067\u306e\u30a8\u30e9\u30fc\u306a\u3057\u52d5\u4f5c\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001DSP\u307e\u305f\u306fSerDes\u53d7\u4fe1\u30c1\u30a7\u30fc\u30f3\u5185\u306bDFE\u3092\u7d71\u5408\u3057\u3066\u3044\u307e\u3059\u3002<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\u306f\u3001\u5149\u2192\u96fb\u6c17\u5909\u63db\u5f8c\u306e\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u306e\u56de\u5fa9\u3092\u652f\u63f4\u3057\u3001IEEE 802.3\u96fb\u6c17\u4ed5\u69d8\u306e\u9069\u5408\u306b\u304a\u3044\u3066\u6975\u3081\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 CTLE vs DFE \u2014 \u88dc\u5b8c\u7684\u306a\u7b49\u5316\u5f79\u5272<br><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u305cCTLE\u5358\u4f53\u3067\u306f\u4e0d\u5341\u5206\u306a\u306e\u304b<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">CTLE\uff08\u9023\u7d9a\u6642\u9593\u7dda\u5f62\u7b49\u5316\u5668\uff09<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u5468\u6ce2\u6570\u4f9d\u5b58\u6027\u640d\u5931\u3092\u88dc\u6b63\u3057\u3001<br> <strong>\u9ad8\u5468\u6ce2\u6210\u5206\u3092\u30d6\u30fc\u30b9\u30c8\u3057\u3001<br><\/strong><\/p><\/li>\n\n\n\n<li><p>\u30a2\u30ca\u30ed\u30b0\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<br><\/p><\/li>\n\n\n\n<li><p>\u3057\u304b\u3057CTLE\u306f\u975e\u7dda\u5f62ISI\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\u3067\u304d\u307e\u305b\u3093\u3002<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u305cDFE\u304cCTLE\u3068\u5b8c\u5168\u306b\u88dc\u5b8c\u3059\u308b\u306e\u304b<br>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DFE\u306f\uff1a<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\u3092\u9664\u53bb\u3057\u3001<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30c7\u30b8\u30bf\u30eb\u5316\u5f8c\u306b\u52d5\u4f5c\u3057\u3001<br><\/p><\/li>\n\n\n\n<li><p>\u30ce\u30a4\u30ba\u3092\u30d6\u30fc\u30b9\u30c8\u3057\u307e\u305b\u3093\u3002<br><\/p><\/li>\n\n\n\n<li><p>\u3053\u308c\u306b\u3088\u308a\u3001<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">CTLE\uff0bDFE\u306f\u3001\u73fe\u4ee3\u306e<br> <strong>\u6700\u3082\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u7b49\u5316\u65b9\u5f0f\u3068\u306a\u308a\u307e\u3059\u3002<br><\/strong> <br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/serdes-interfaces-high-speed-data-transfer-and-signal-integrity\/\">SerDes<\/a> \u304a\u3088\u3073 <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>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"756\" height=\"503\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0.png\" alt=\"DFE (Decision Feedback Equalizer)\" class=\"wp-image-3449\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0.png 756w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0-300x200.png 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0-18x12.png 18w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 DFE\u306e\u5229\u70b9\u3068\u5236\u9650<br><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf \u5229\u70b9<br><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\u306e\u30ad\u30e3\u30f3\u30bb\u30eb\u306b\u975e\u5e38\u306b\u52b9\u679c\u7684<br><\/p><\/li>\n\n\n\n<li><p>\u71b1\u30ce\u30a4\u30ba\u3084\u30c1\u30e3\u30cd\u30eb\u30ce\u30a4\u30ba\u3092\u5897\u5e45\u3057\u307e\u305b\u3093<br><\/p><\/li>\n\n\n\n<li><p>\u30c1\u30e3\u30cd\u30eb\u5909\u52d5\u306b\u5bfe\u3057\u3066\u9069\u5fdc\u7684\u304b\u3064\u30ed\u30d0\u30b9\u30c8<br><\/p><\/li>\n\n\n\n<li><p>\u30de\u30eb\u30c1\u30ae\u30ac\u30d3\u30c3\u30c8\u30ea\u30f3\u30af\u306b\u304a\u3051\u308bBER\u3092\u5287\u7684\u306b\u6539\u5584<br><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf \u5236\u9650<br><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30d7\u30ec\u30ab\u30fc\u30bd\u30ebISI\u3092\u88dc\u6b63\u3067\u304d\u307e\u305b\u3093<br> <strong>\uff08FFE\uff0f\u9001\u4fe1\u5074\u30d7\u30ea\u30a8\u30f3\u30d5\u30a1\u30b7\u30b9\u304c\u5fc5\u8981\uff09<br><\/strong> \u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7\u306b\u3088\u308a\u8907\u96d1\u3055\u3068\u6d88\u8cbb\u96fb\u529b\u304c\u5897\u52a0<br><\/p><\/li>\n\n\n\n<li><p>\u6b63\u78ba\u304b\u3064\u5b89\u5b9a\u3057\u305f\u5224\u5b9a\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\uff08\u8aa4\u308a\u4f1d\u642c\u306e\u30ea\u30b9\u30af\u3042\u308a\uff09<br><\/p><\/li>\n\n\n\n<li><p>PAM4\u30ec\u30fc\u30c8\u3067\u306f\u5b9f\u88c5\u304c\u3055\u3089\u306b\u8907\u96d1<br><\/p><\/li>\n\n\n\n<li><p><br><\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \u696d\u754c\u306b\u304a\u3051\u308bDFE\u306e\u5b9f\u7528\u7684\u306a\u6d3b\u7528\u4e8b\u4f8b<br><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u30d0\u30c3\u30af\u30d7\u30ec\u30fc\u30f3\u30ea\u30f3\u30af\uff0825G\uff0f56G\uff0f112G SerDes\uff09<br><\/p><\/li>\n\n\n\n<li><p>\u9ad8\u901f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\uff0825GBASE-KR\u3001100GBASE-KR4\uff09<br><\/p><\/li>\n\n\n\n<li><p>PCIe Gen4\uff0f5\uff0f6<br><\/p><\/li>\n\n\n\n<li><p>\u5149\u30e2\u30b8\u30e5\u30fc\u30ebDSP\uff0810G\uff5e400G\uff09<br><\/p><\/li>\n\n\n\n<li><p>CDR\uff0f\u30ea\u30bf\u30a4\u30deIC<br><\/p><\/li>\n\n\n\n<li><p>\u9ad8\u5bc6\u5ea6\u30b9\u30a4\u30c3\u30c1\u304a\u3088\u3073\u30eb\u30fc\u30bf\u30dd\u30fc\u30c8<br><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b\uff1a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\u5149\u30e2\u30b8\u30e5\u30fc\u30eb<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\u306f\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u9577\u3001\u30b3\u30cd\u30af\u30bf\u306e\u3070\u3089\u3064\u304d\u3001PCB\u306e\u5e7e\u4f55\u5b66\u7684\u5f62\u72b6\u306a\u3069\u3001\u591a\u69d8\u306a\u30c1\u30e3\u30cd\u30eb\u6761\u4ef6\u306b\u304a\u3044\u3066\u53b3\u683c\u306a\u4fe1\u53f7\u5b8c\u5168\u6027\u304a\u3088\u3073\u30d3\u30c3\u30c8\u30a8\u30e9\u30fc\u7387\uff08BER\uff09\u8981\u4ef6\u3092\u6e80\u305f\u3059\u306e\u306b\u5f79\u7acb\u3061\u3001100G\/200G\/400G\u5149\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \u6982\u8981<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u30c7\u30a3\u30b7\u30b8\u30e7\u30f3\u30fb\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30fb\u30a4\u30b3\u30e9\u30a4\u30b6\uff08DFE\uff09<\/strong> \u306f\u3001\u30de\u30eb\u30c1\u30ae\u30ac\u30d3\u30c3\u30c8\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u306b\u304a\u3051\u308b\u4fe1\u53f7\u6b6a\u307f\u306e\u4e3b\u306a\u539f\u56e0\u3067\u3042\u308b\u30dd\u30b9\u30c8\u30ab\u30fc\u30bd\u30ebISI\uff08 intersymbol interference\uff1a\u30b7\u30f3\u30dc\u30eb\u9593\u5e72\u6e09\uff09\u3092\u9664\u53bb\u3059\u308b\u305f\u3081\u306b\u3001\u9ad8\u901f\u901a\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067\u7528\u3044\u3089\u308c\u308b\u91cd\u8981\u306a\u30c7\u30b8\u30bf\u30eb\u7b49\u5316\u6280\u8853\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u904e\u53bb\u306e\u30b7\u30f3\u30dc\u30eb\u5224\u5b9a\u3092\u7528\u3044\u3066\u5e72\u6e09\u3092\u52d5\u7684\u306b\u30ad\u30e3\u30f3\u30bb\u30eb\u3059\u308b\u3053\u3068\u3067\u3001DFE\u306f\u7279\u306b<a href=\"#ffe\">FFE<\/a>\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5834\u5408\u306b\u3001\u30a2\u30a4\u30aa\u30fc\u30d7\u30cb\u30f3\u30b0\u304a\u3088\u3073BER\u6027\u80fd\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">CTLE<br><\/a> \u307e\u305f\u306f\u9001\u4fe1\u5074\uff08Tx-side\uff09\u306eFFE\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5834\u5408\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73fe\u4ee3\u306e\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u304a\u3088\u3073SerDes\u53d7\u4fe1\u6a5f\u3067\u306f\u3001, <strong>CTLE\u304c\u7dda\u5f62\u30a2\u30ca\u30ed\u30b0\u640d\u5931\u3092\u51e6\u7406\u3057\u3001<\/strong>, \u4e00\u65b9\u3067\u3001 <strong>DFE\u304c\u975e\u7dda\u5f62\u30c7\u30b8\u30bf\u30ebISI\u3092\u88dc\u6b63\u3057\u3001<\/strong>, \u696d\u754c\u6a19\u6e96\u306e\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u7b49\u5316\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u69cb\u6210\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u6c7a\u5b9a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30a4\u30b3\u30e9\u30a4\u30b6 (DFE) \u3092\u767a\u898b\u3057\u3088\u3046\u3002\u3053\u308c\u306f\u3001ISI\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u975e\u7dda\u5f62\u6280\u8853\u3067\u3059\u3002\u5149\u5b66\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u304a\u3088\u3073\u9577\u8ddd\u96e2\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u306b\u304a\u3051\u308b\u30d3\u30c3\u30c8BER\u306e\u5411\u4e0a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3057\u3087\u3046\u3002.<\/p>","protected":false},"author":1,"featured_media":3450,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-3451","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/3451","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=3451"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/3451\/revisions"}],"predecessor-version":[{"id":10798,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/posts\/3451\/revisions\/10798"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media\/3450"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/media?parent=3451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/categories?post=3451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ja\/wp-json\/wp\/v2\/tags?post=3451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}