Short-Block Length Polar-Coded Modulation for the Relay Channel
Short-Block Length Polar-Coded Modulation for the Relay Channel
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DOI：
10.1109/tcomm.2022.3225546
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发表时间：
2023-01
影响因子：
8.3
通讯作者：
Heping Wan;Aria Nosratinia
中科院分区：
文献类型：
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作者：
Heping Wan;Aria Nosratinia
短块长度通信对于诸如机器对机器通信等应用变得越来越重要。本文研究了短块长度体制下极化码调制在解码转发、放大转发和压缩转发中继中的应用。我们的工作无缝地将多级信令、极化编码/解码和中继的要求结合到具有优异性能的编码器和解码器中。与解码转发的最新技术相比，我们的工作表现出2.5 dB的改善（在块长度512）。对于较短的块长度256和128，这项工作是第一个报告的实现任何编码调制和任何中继协议。在极性编码全双工中继的类别中，这项工作提出了在任何块长度和任何中继协议的第一个实现。对于解码转发，我们提出并分析了联合迭代置信传播解码与极化码，和连续列表解码与极化调整卷积（PAC）码。对于放大转发，我们利用PAC码和连续列表解码。对于这三种中继协议，给出了各自的色散界进行比较，并分析了多级中继编码调制的误差指数，以揭示结果。大量的仿真验证了所提出的编码方案的性能。
Short-block length communication is becoming increasingly important for applications such as machine-to-machine communication, among others. This paper studies polar-coded modulation in the short-block length regime for decode-forward, amplify-forward and compress-forward relays. Our work seamlessly combines multi-level signaling, polar coding/decoding, and the requirements of relaying, into encoders and decoders that exhibit excellent performance. Compared with the state of the art in decode-forward, our work demonstrates 2.5 dB improvement (at block length 512). For shorter block lengths 256 and 128, this work is the first reported implementation for any coded modulation and any relaying protocol. In the category of polar-coded full-duplex relaying, this work presents the first implementation at any block length and for any relaying protocol. For decode-forward, we propose and analyze joint iterative belief propagation decoding with polar codes, and successive list decoding with polarization-adjusted convolutional (PAC) codes. For amplify-forward, we utilize PAC codes and successive list decoding. For the three relaying protocols, the respective dispersion bounds are presented for comparison, and the error exponent of the multi-level relaying coded modulations are analyzed to shed light on the results. Extensive simulations verify the performance of the proposed coding schemes.