Bidirectional Block Decision Feedback Equalization for the Hybrid Carrier System

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-03-21 DOI:10.1109/LCOMM.2025.3572182

Shiwei Zhu;Zhaopeng Du;Lin Mei

引用次数: 0

Abstract

In this letter, a novel bidirectional block decision feedback equalization (BI-BDFE) algorithm is proposed for hybrid carrier (HC) systems based on the weighted-type fractional Fourier transform (WFRFT). This innovative algorithm employs a bidirectional BDFE structure in the WFRFT domain, which not only highlights the inherent advantage of HC architecture in combating doubly selective fading but also effectively mitigates the error propagation issue inherent in conventional unidirectional BDFE. Numerical results demonstrate that under doubly selective channels, the proposed BI-BDFE achieves significantly superior bit error rate (BER) performance compared to existing nonlinear equalization schemes.

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混合载波系统的双向分组决策反馈均衡

本文提出了一种基于加权型分数阶傅里叶变换（WFRFT）的混合载波系统双向分块决策反馈均衡（BI-BDFE）算法。该算法在WFRFT域中采用双向BDFE结构，不仅突出了HC结构在抗双选择性衰落方面的固有优势，而且有效地缓解了传统单向BDFE固有的误差传播问题。数值结果表明，在双选择信道下，与现有的非线性均衡方案相比，所提出的BI-BDFE具有显著的误码率性能。

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

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.