New results on unequal error protection using LDPC codes

被引：30
|
作者：
Rahnavard, N [1 ]
Fekri, F [1 ]
机构：
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源：
IEEE COMMUNICATIONS LETTERS | 2006年 / 10卷 / 01期
基金：
美国国家科学基金会;
关键词：
unequal error protection; low-density parity-check codes; density evolution;
D O I：
10.1109/LCOMM.2006.1576564
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, we propose a new scheme to construct low-density parity-check (LDPC) codes that are suitable for unequal error protection (UEP). We derive UEP density evolution (UDE) formulas for the proposed ensemble over the binary erasure channel (BEC). Using the UDE formulas, high performance UEP codes can be found. Simulation results depict an improvement in the bit error rate of more important bits in comparison with previous results on UEP-LDPC codes.
引用
收藏
页码：43 / 45
页数：3
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