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    • Unity-Rate Coding Improves the Iterative Detection Convergence of Autoencoder-Aided Communication Systems
    Authors: Luping, Xiang; Chao, Xu; Xiaoyu, Zhang;  Advisor: -;  Co-Author: - (2022)

    A forward error correction (FEC) and unity-rate coded (URC) autoencoder (AE)-assisted communication system is proposed for the first time, which relies on soft iterative decoding for attaining a vanishingly low error probability. The AE-demapper is specifically designed for directly calculating the extrinsic logarithmic likelihood ratios (LLRs), which can be directly entered into the URC decoder for soft iterative decoding. This avoids the potential degradation due to the conversion of symbol probabilities to bit LLRs. A comprehensive capacity analysis of the AE is performed, which demonstrates the capacity advantage of the AE-aided constellation design over its conventional quadratur...