Turbo Coding, Turbo Equalisation and Space-Time Coding for Transmission over Fading Channels
Turbo Coding, Turbo Equalisation and Space-Time Coding for Transmission over Fading Channels
Genetic Algorithms in Search, Optimization and Machine Learning
Genetic Algorithms in Search, Optimization and Machine Learning
Iterative Source-Channel Decoding With Markov Random Field Source Models
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Extrinsic information transfer functions: model and erasure channel properties
IEEE Transactions on Information Theory
Near-capacity irregular variable length coding and irregular unity rate coding
IEEE Transactions on Wireless Communications
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In this paper we propose a novel Real-Valued Free Distance Metric (RV-FDM) for comparing the error correction capabilities of Variable Length Error Correction (VLEC) codebooks that have the same integer-valued free distance lower bounds. We demonstrate that VLEC codebooks having higher RV-FDMs tend to have EXtrinsic Information Transfer (EXIT) functions with more pronounced 'S'-shapes. Furthermore, we show that higher-accuracy EXIT chart matching can be achieved if the component EXIT functions of an irregular code exhibit more variety. This motivates the employment of our novel genetic algorithm for designing the component VLEC codes of irregular variable length coding, that have particular EXIT functions, in addition to exhibiting desirable bit entropies and decoding complexities.