Improved Channel Estimation and Equalization for Single-Carrier IEEE 802.11ad Receivers

IF 0.5 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Radioengineering Pub Date : 2023-09-01 DOI:10.13164/re.2023.0438

G. Baruffa, L. Rugini

引用次数: 0

Abstract

. IEEE 802.11ad uses mmWave technology for multi-gigabit wireless access networks. Multipath with large delay spread severely reduces performance due to insufficient guard interval. In this paper, we improve single-carrier IEEE 802.11ad receivers by proposing channel estimation and equalization methods for a frequency domain equalizer. Channel estimation is improved by leveraging on sparsity of the channel impulse response, while equalization is combined with an interference cancellation algorithm. The log-likelihood ratio demapper is also improved by correct power estimation of signal, interference, and noise. Simulation re-sults show that the proposed methods are effective on channels whose length exceeds the guard interval.

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改进的单载波IEEE 802.11ad接收机信道估计和均衡

． IEEE 802.11ad使用毫米波技术实现千兆无线接入网络。时延扩展大的多路径由于保护间隔不足，严重降低了性能。本文通过提出一种频域均衡器的信道估计和均衡方法来改进单载波IEEE 802.11ad接收机。利用信道脉冲响应的稀疏性改进了信道估计，同时将均衡与干扰抵消算法相结合。对数似然比demapper也通过对信号、干扰和噪声的正确功率估计得到改进。仿真结果表明，该方法对长度超过保护间隔的信道是有效的。

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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来源期刊

Radioengineering 工程技术-工程：电子与电气

CiteScore

2.00

自引率

9.10%

发文量

审稿时长

5.7 months

期刊介绍： Since 1992, the Radioengineering Journal has been publishing original scientific and engineering papers from the area of wireless communication and application of wireless technologies. The submitted papers are expected to deal with electromagnetics (antennas, propagation, microwaves), signals, circuits, optics and related fields. Each issue of the Radioengineering Journal is started by a feature article. Feature articles are organized by members of the Editorial Board to present the latest development in the selected areas of radio engineering. The Radioengineering Journal makes a maximum effort to publish submitted papers as quickly as possible. The first round of reviews should be completed within two months. Then, authors are expected to improve their manuscript within one month. If substantial changes are recommended and further reviews are requested by the reviewers, the publication time is prolonged.