Decentralized Feedforward-Feedback Interference Cancellation-Based Detector for M-MIMO Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-02-13 DOI:10.1109/LCOMM.2025.3541876

Hua Li;Shiya Hao;Qianqian Li;Yuqing Feng;Jiaqi Feng;Lintao Li;Xiaoming Dai

引用次数: 0

Abstract

Decentralized baseband processing (DBP) has been considered a promising solution to tackle the excessive computational complexity and substantial interconnection costs challenges faced by centralized implementations in massive multiple-input multiple-output (M-MIMO) systems. However, most existing decentralized detectors experience considerable performance degradation resulting from limited information sharing among antenna clusters. In this letter, we propose a decentralized feedforward-feedback interference cancellation (FFIC) detection paradigm for DBP architectures, which is well-suited for message-passing-based nonlinear detectors. The expectation propagation (EP) algorithm is employed as an illustrative example. Simulation results demonstrate that the proposed FFIC-EP detector yields significant performance improvements compared to conventional methods, providing a flexible trade-off between performance, complexity, and interconnection costs, especially in scenarios with low BS-antenna-to-user ratios.

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基于干扰消除的分散式前馈-反馈检测器用于 M-MIMO 系统

分散基带处理（DBP）被认为是解决大规模多输入多输出（M-MIMO）系统中集中式实现所面临的过度计算复杂性和大量互连成本挑战的有前途的解决方案。然而，由于天线簇之间信息共享有限，现有的分散式检测器的性能下降很大。在这封信中，我们提出了一种分散的前馈-反馈干扰消除（FFIC）检测范式，用于DBP架构，它非常适合基于消息传递的非线性检测器。以期望传播（EP）算法为例。仿真结果表明，与传统方法相比，所提出的FFIC-EP探测器具有显著的性能改进，在性能、复杂性和互连成本之间提供了灵活的权衡，特别是在低bs天线用户比的情况下。

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.