Message Passing Detector for Phase-Shifter-Aided Spatial Multiplexing Over Frequency Selective Channels

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Vehicular Technology Pub Date : 2025-01-17 DOI:10.1109/TVT.2025.3531355

Min Liu;Lechen Zhang;Jiangong Chen;Saviour Zammit;Yue Xiao

引用次数: 0

Abstract

Reducing the cost of radio frequency (RF) chains remains a critical challenge in multiple-input multiple-output (MIMO) systems. In this paper, we investigate a novel low-RF-chain technique, termed as phase-shifter-aided spatial multiplexing (PSSM), in the context of frequency-selective channels. Base on the single-carrier frequency-domain equalization (SC-FDE) concept, we develop a message-passing detector specifically tailored for PSSM systems. This detector integrates belief propagation (BP) and expectation propagation (EP) to efficiently leverage prior constraints as well as handling the linear inverse problem. To further reduce computational complexity, a simplification method is then introduced. Simulation results demonstrate that the proposed framework achieves superior performance compared to conventional approaches.

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频率选择信道上移相器辅助空间复用的消息传递检测器

在多输入多输出（MIMO）系统中，降低射频（RF）链的成本仍然是一个关键挑战。在本文中，我们研究了一种新的低射频链技术，称为移相辅助空间复用（PSSM），在频率选择信道的背景下。基于单载波频域均衡（SC-FDE）概念，我们开发了一个专为PSSM系统量身定制的消息传递检测器。该检测器将信念传播（BP）和期望传播（EP）相结合，有效地利用了先验约束并处理了线性逆问题。为了进一步降低计算复杂度，引入了一种简化方法。仿真结果表明，与传统方法相比，该框架具有更好的性能。

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 Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.