A modified recursive non-quadratic algorithm for adaptive channel equalization

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2024-08-17 DOI:10.1016/j.apacoust.2024.110239

引用次数: 0

Abstract

This paper proposes a solution to reduce the inter symbol interferences (ISI) in multipath channels with frequency selective fading. The proposed solution is based on a Modified Recursive Non-Quadratic (MRNQ) adaptive algorithm combined with a Decision Feed-forward Equalizer (DFE) structure, referred to as MRNQ-DFE. First, we studied the behavior of the proposed approach by evaluating the impact of some key factors of the convergence rate, relying on the mean squared error (MSE) criterion. Then, we conducted a comprehensive set of experiments to evaluate the performance of the proposed MRNQ-DFE equalizer compared to other robust adaptive equalizers, such as NLMS-DFE and APA-DFE. These experiments rely on a variety of objective criteria, including the constellation diagram, the eye diagram, the Nyquist criterion, and the MSE criterion. The obtained results show the effectiveness of the proposed equalizer to achieve the desired goal with a superior convergence speed compared to the other strong adaptive equalizers, making it an effective solution for multipath channels in digital communication systems.

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自适应信道均衡的修正递归非二次算法

本文提出了一种在具有频率选择性衰落的多径信道中减少符号间干扰（ISI）的解决方案。提出的解决方案基于修正递归非二次方（MRNQ）自适应算法与决策前馈均衡器（DFE）结构相结合，称为 MRNQ-DFE。首先，我们根据均方误差（MSE）标准，通过评估收敛速率的一些关键因素的影响，研究了所提方法的行为。然后，我们进行了一系列综合实验，以评估与其他鲁棒自适应均衡器（如 NLMS-DFE 和 APA-DFE）相比，所提出的 MRNQ-DFE 均衡器的性能。这些实验依赖于各种客观标准，包括星座图、眼图、奈奎斯特标准和 MSE 标准。实验结果表明，与其他强自适应均衡器相比，所提出的均衡器收敛速度更快，能有效实现预期目标，是数字通信系统中多径信道的有效解决方案。

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

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.