Error performance and decoder hardware comparison between EG-LDPC and BCH codes

Abstract

Low-density parity-check (LDPC) codes are promising for low code rate applications, however its competitiveness over BCH codes in the high code rate region is not well studied. In this work, we compare the Euclidean geometry (EG) LDPC and BCH codes of the length 1,023, 4,095, and 16,383 that have the code rates of 0.75-0.85. Hard-decision input data are applied to both decoders, and the EG-LDPC codes are decoded using the layered bit-flipping (BF) algorithm. Since the number of needed iterations for LDPC decoding depends on the channel condition, both decoders are designed to have the similar minimum throughput. Not only error performance but also hardware complexity and power consumption of these decoders are compared. ©2010 IEEE.