Interference and Phase Noise Mitigation in a Dual-Polarized Faster-than-Nyquist Transmission

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2018-06-01 DOI:10.1109/SPAWC.2018.8445889

Mrinmoy Jana, L. Lampe, J. Mitra

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引用次数: 3

Abstract

Dual-polarized (DP) faster-than-Nyquist (FTN) transmission using higher-order modulation (HoM) schemes can significantly increase the spectral efficiency (SE) of the existing wireless backhaul links. However, FTN transmissions introduce inter-symbol interference (ISI), antenna polarization multiplexing suffers from cross-polarization interference (XPI) and HoM makes a communication system vulnerable to phase-noise (PN) distortions. In this work, we investigate for the first time a DP-FTN HoM transmission system that offers more than 150% increase in SE compared to a single-polarized Nyquist transmission. We propose an interference cancellation and PN mitigation structure coupled with adaptive decision-feedback equalization to jointly mitigate XPI, FTN and multipath ISI, and accomplish carrier-phase tracking. Numerical results confirm that a DP-FTN transmission can yield a 3–6 dB performance improvement over an equivalent DP-Nyquist system that uses a higher modulation order to achieve the same data rate.

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双极化快于奈奎斯特传输中的干扰和相位噪声抑制

采用高阶调制(HoM)方案的双极化(DP)比奈奎斯特(FTN)更快的传输可以显著提高现有无线回程链路的频谱效率(SE)。然而，FTN传输引入码间干扰(ISI)，天线极化复用受到交叉极化干扰(XPI)， homm使通信系统容易受到相位噪声(PN)失真的影响。在这项工作中，我们首次研究了一种DP-FTN homm传输系统，与单极化奈奎斯特传输相比，该系统的SE增加了150%以上。我们提出了一种结合自适应决策反馈均衡的干扰抵消和PN抑制结构，以共同抑制XPI、FTN和多径ISI，并实现载波相位跟踪。数值结果证实，DP-FTN传输比等效DP-Nyquist系统产生3-6 dB的性能改进，该系统使用更高的调制顺序来实现相同的数据速率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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