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1、一種新的碼率兼容LDPC碼打孔方案蘇和光①夏樹(shù)濤①②①清華大學(xué)深圳研究生院深圳518055②東南大學(xué)移動(dòng)通信國(guó)家重點(diǎn)實(shí)驗(yàn)室南京210096摘要:該文研究碼率兼容LDPC碼的打孔問(wèn)題。Ha等人研究LDPC碼打孔時(shí)提出的Grouping和Sorting方案使低k-SR節(jié)點(diǎn)的數(shù)目最大化,它相對(duì)于隨機(jī)打孔有了很大增益,但此方案只保證有一個(gè)存活校驗(yàn)節(jié)點(diǎn)。該文研究多個(gè)存活校驗(yàn)節(jié)點(diǎn)的作用,提出MSCN打孔方案最大化打孔節(jié)點(diǎn)的存活校驗(yàn)節(jié)點(diǎn)數(shù)。AWGN信道上的仿真結(jié)果顯示,低碼率時(shí)MSCN方案具有比Grouping和Sorting方案更為優(yōu)越的性能。理論推導(dǎo)及實(shí)驗(yàn)
2、結(jié)果均表明,碼率兼容LDPC碼打孔時(shí),多個(gè)存活校驗(yàn)節(jié)點(diǎn)有益于譯碼性能的提升。LDPC碼;碼率兼容;Tanner圖;打孔TN911.22A1009-5896(2011)10-2334-0610.3724/SP.J.1146.2010.01202ANovelPuncturingSchemeforRate-compatibleLDPCCodesSuHe-guangXiaShu-tao2010-11-052011-07-13國(guó)家自然科學(xué)基金(60972011),高等學(xué)校博士學(xué)科點(diǎn)專(zhuān)項(xiàng)基金和東南大學(xué)移動(dòng)通信國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放研究基金(2011D11)資助課
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