Constraining LDPC degree distributions for improved error floor performance
Constraining LDPC degree distributions for improved error floor performance
复制标题
约束 LDPC 度分布以提高错误层性能
DOI：
10.1109/lcomm.2006.02001
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
S. Weller
中科院分区：
文献类型：
--
作者：
Sarah J. Johnson;S. Weller
有限长非规则低密度奇偶校验（LDPC）码的错误平层性能很差，如果选择码度分布来优化阈值性能。在本文中，我们表明，通过约束优化过程中，阈值和错误地板的性能之间的平衡，可以得到。由此产生的度分布给出了最佳阈值性能，但对错误地板有最低要求
The error floor performance of finite-length irregular low-density parity-check (LDPC) codes can be very poor if code degree distributions are chosen to optimize the threshold performance. In this paper we show that by constraining the optimization process, a balance between threshold and error floor' performance can be obtained. The resulting degree distributions give the best threshold performance subject to some minimum requirement on the error floor