This letter proposes and studies a technique for grouping the bits transmitted through a wireless channel into codewords according to their quality (SNR). It proves that splitting the bits into multiple codewords of different rates provides a higher throughput than mixing heterogeneous quality bits into fixed-rate codewords. The letter first analyzes the pros and cons of different mappings of bits and codewords to the available time, frequency, and modulation resources. Then it describes the proposed scheme for a 16-QAM modulation and illustrates its benefits through simulations. Finally, it provides a mathematical proof of its superiority in a binary-input parallel AWGN channel with finite length error correcting codes. The proposed scheme can be applied to any communications channel using error correcting codes (ECC), but it is of particular interest for millimeter-wave (mmWave) wireless communications, where the channel quality is closely monitored and high order modulations are used over wide bandwidths. The simulations suggest that modest gains in throughput can be obtained with negligible additional complexity.

中文翻译：

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通过对相似质量位进行分组来增加无线通信的吞吐量

这封信提出并研究了一种根据质量 (SNR) 将通过无线信道传输的比特分组为码字的技术。它证明将比特分成多个不同速率的码字比将不同质量的比特混合成固定速率的码字提供更高的吞吐量。该信首先分析了比特和码字到可用时间、频率和调制资源的不同映射的优缺点。然后描述了建议的 16-QAM 调制方案，并通过仿真说明了它的好处。最后，它提供了其在具有有限长度纠错码的二进制输入并行 AWGN 信道中优越性的数学证明。所提出的方案可以应用于任何使用纠错码 (ECC) 的通信信道，但它对毫米波 (mmWave) 无线通信特别感兴趣，在这种通信中，信道质量受到密切监控，并且在宽带宽上使用高阶调制。模拟表明，可以在附加复杂性可忽略不计的情况下获得适度的吞吐量增益。