Iterative Block Decision Feedback Equalization With Near-Linear Complexity for SC-FDE Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS IEEE Communications Letters Pub Date : 2025-01-23 DOI:10.1109/LCOMM.2025.3532952

Tianrun Qiao;Xiaojie Fang;Xuejun Sha

引用次数: 0

Abstract

In this letter, a low complexity iterative block decision feedback equalization (IBDFE) algorithm is designed for single carrier frequency domain equalization (SC-FDE) systems. By identifying error peaks within the output of minimum mean square error frequency domain linear equalizer (MMSE FD-LE) and substituting them with feedback signal, a performance gain of more than 3dB compared to MMSE FD-LE can be achieved at a bit error rate (BER) of

$10^{-4}$

. The proposed algorithm has a minor performance loss compared to IBDFE system based on MMSE criterion (IBDFE-MMSE), while also offering lower latency and complexity close to that of MMSE FD-LE.

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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.

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