IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing

Degree-Matched Check Node Decoding for Regular and Irregular LDPCs

Sheryl L. Howard, Christian B. Schlegel, Vincent Gaudet

Published Oct 1, 2006• 22 citations

Abstract

This brief examines different parity-check node decoding algorithms for low-density parity-check (LDPC) codes, seeking to recoup the performance loss incurred by the min-sum approximation compared to sum-product decoding. Two degree-matched check node decoding approximations that depend on the check node degree dcare presented. Both have low complexity and can be applied to any degree distribution. Simulation results show near sum-product decoding performance for both degree-matched check node approximations for regular and irregular LDPCs

DOI: 10.1109/tcsii.2006.882204

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