Title :
Robust LDPC decoding using irregular decoders
Author :
Yazdani, Raman ; Ardakani, Masoud
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB
fDate :
12/1/2008 12:00:00 AM
Abstract :
It has been observed that irregular decoders for low density parity-check (LDPC) codes can be more robust to channel estimation errors compared to conventional decoders. In this work, by presenting a robustness measure, we propose a method for the joint optimization of irregular LDPC code-decoder pairs to have the widest convergence region when channel estimation errors exist.
Keywords :
channel estimation; decoding; optimisation; parity check codes; channel estimation errors; irregular decoders; joint optimization; low density parity-check codes; robust LDPC decoding; Additive noise; Additive white noise; Approximation algorithms; Channel estimation; Convergence; Iterative algorithms; Iterative decoding; Noise robustness; Optimization methods; Parity check codes; Low-density parity-check (LDPC) codes, irregular decoders, channel estimation errors, min-sum, sum-product;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2008.080977
