SVD-Precoded Faster-Than-Nyquist Signaling With Optimal and Truncated Power Allocation
SVD-Precoded Faster-Than-Nyquist Signaling With Optimal and Truncated Power Allocation
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具有最佳和截断功率分配的 SVD 预编码比奈奎斯特信号更快
DOI：
10.1109/twc.2019.2940632
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发表时间：
2019
影响因子：
10.4
通讯作者：
T. Ishihara and S. Sugiura
中科院分区：
文献类型：
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作者：
Md Shamim Sarker;Hiroyasu Yamahara;and Hitoshi Tabata;T. Ishihara and S. Sugiura
本文提出了一种基于奇异值分解（SVD）的最优功率分配的比nyquist （FTN）更快的预编码信令方案。对传统的和提出的svd预编码FTN信令架构进行了信息论分析。通过扩展经典香农容量，以一种封闭形式导出了相关的信息速率界，以支持svd预编码的FTN信令方案。我们的分析性能结果表明，该方案优于传统的基于nyquist准则的对等方案和传统的不使用功率分配的svd预编码FTN信令方案。几个重要的实现问题，如块间干扰，使用频率选择（色散）通道，截断和采样率，也被考虑。最后，提出了一种克服截断问题的次优功率分配方案。
This study proposes a precoded faster-than-Nyquist (FTN) signaling scheme based on singular-value decomposition (SVD) with optimal power allocation. An information-theoretic analysis is conducted on the conventional and proposed SVD-precoded FTN signaling architectures. The associated information rate bound is derived in a closed-form by extending the classic Shannon capacity to support the SVD-precoded FTN signaling schemes. Our analytical performance results demonstrate that the proposed scheme outperforms its conventional Nyquist-criterion-based counterpart and the conventional SVD-precoded FTN signaling scheme, which does not use power allocation. Several important implementation issues, such as inter-block interference, the use of a frequency-selective (dispersive) channel, truncation, and sampling rate, are also considered. Finally, a suboptimal power allocation scheme that overcomes the truncation issue is presented.