Joint message passing decoding for LDPC codes with CCDMs
Y. Luo, Qin Huang
Abstract
In this Letter, message passing algorithms are introduced to jointly decode low-density parity-check (LDPC) codes and constant composition distribution matchers (CCDMs) to achieve better performance. Then, based on the weight constraint of CCDMs, a weight decoding with linear complexity is proposed to efficiently decode the CCDM codewords. Simulations over a fiber channel show that short CCDMs with the proposed joint decoding provide up to 10.6% reach increase compared with long CCDMs with one-pass decoding.
Topics & Concepts
Decoding methodsLow-density parity-check codeComputer scienceList decodingAlgorithmJoint (building)Channel codeMessage passingSequential decodingConstraint (computer-aided design)Concatenated error correction codeBlock codeMathematicsParallel computingGeometryEngineeringArchitectural engineeringError Correcting Code TechniquesOptical Network TechnologiesAdvanced Wireless Communication Techniques