Multi-level Polar Coded Modulation for the Decode-Forward Relay Channel
Multi-level Polar Coded Modulation for the Decode-Forward Relay Channel
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DOI：
10.1109/globecom46510.2021.9685422
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发表时间：
2021-12
期刊：
影响因子：
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通讯作者：
Heping Wan;Aria Nosratinia
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文献类型：
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作者：
Heping Wan;Aria Nosratinia
我们研究了解码转发中继信道中多级极性编码调制的性能。我们首先通过链式法则和误差指数对分配给各级极性码的速率进行数值分析。 Polar码的构建遵循5G标准。针对目的地提出了基于最大比结合多级解码的联合解码。我们使用灰色标签和 Ungerboeck 集划分来模拟 16QAM 下的错误性能。在半双工模式下，与现有技术相比，观察到 2.5dB 的增益，其中包括由于多级解码而产生的 0.7dB 增益和由于标记选择而产生的 1.8dB 增益。此外，根据误差指数的误差性能与链式法则进行了比较。计算解码转发中继的色散界限。
We investigate the performance of multi-level polar coded modulation in the decode-forward relay channel. We begin by numerically analyzing the rates assigned to polar codes of all levels via chain rule and error exponent. The construction of polar codes follows the 5G standard. A joint decoding based on maximum ratio combining with multistage decoding is proposed for the destination. We simulate the error performance under 16QAM with gray labeling and Ungerboeck's set partitioning. In the half-duplex mode, a gain of 2.5dB is observed compared with the state of the art, consisting of 0.7 dB gain due to multistage decoding and 1.8dB gain due to the choice of labeling. In addition, the error performance according to error exponent is compared with the chain rule. A dispersion bound for the decode-forward relaying is calculated.