Euclidean Distance Spectra of Irregular NB LDPC Coded QAM Signals with Optimized Mappings

Irina E. Bocharova,Boris D. Kudryashov,Vitaly Skachek

2021 IEEE International Symposium on Information Theory (ISIT)（2021）

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摘要

Properties of non-binary (NB) LDPC codes used in conjunction with coded modulation systems are studied. It is observed that the performance of the NB LDPC coded transmission schemes strongly depends on the mapping between the NB symbols and the signal constellation points. The Euclidean distance spectra for an ensemble of random NB LDPC codes for specific mappings are derived. The simulation resul...

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关键词

Constellation diagram,Quadrature amplitude modulation,Simulation,Modulation,Euclidean distance,Parity check codes,Decoding

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