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The Performance of LDPC-COFDM Systems in a Multipath Fading Environment
Author(s): 
Pages: 31-34,53
Year: Issue:  6
Journal: ELECTRONIC ENGINEER

Keyword:  正交频分复用(OFDM)低密度奇偶校验码(LDPC)编码正交频分复用(COFDM)多径衰落信道;
Abstract: 将正交频分复用(OFDM)技术应用于多径衰落信道下的高速数据传输是一个极富吸引力的方案,包括卷积码、RS码、Turbo码在内的多种纠错编码都曾被应用在OFDM系统中.最近,一种新的编码方案--低密度奇偶校验码(LDPC)引起了人们的注意.LDPC具有低的解码复杂度和逼近香农限的性能.文中仿真分析了LDPC-COFDM(编码正交频分复用)系统的性能,并与Turbo码系统进行了对比,结果表明该系统在多径衰落信道下显示出更为优越的性能.
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