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A Soft Iterative Receiver With Simplified EP Detection for Coded MIMO Systems

delete2025-07-01
delete0
PRE
AI
X
Xiaosi Tan
X
Xie Xiaohua
H
Houren Ji
T
Tiancan Xia
黄
黄永明 (Yongming Huang)
肖友 封面图
肖友 (Xiaohu You)
C
Chuan Zhang
DOI：10.1109/TVLSI.2025.3536019delete
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摘要

摘要

En 中文
期望传播（EP）算法在大型多输入多输出（MIMO）检测中采用高阶调制时能够实现卓越性能。EP检测器的软输出可以与Turbo软译码器迭代结合，以增强纠错性能。然而，基于EP的迭代检测与译码（IDD）接收机在基站天线数量和调制阶数增加时，其计算复杂度会呈指数级增长。本文提出了一种简化的EP近似算法基础上的IDD（sEPA-IDD）方案，适用于硬件实现。为减轻计算负担，提出了一种简化的消息更新方案，在不降低性能的前提下将复杂度降低了68%。此外，提出了一种统一的校验信息计算设计，进一步提高了硬件利用率。最后，我们引入了首个展开的EP基础IDD架构，以提升吞吐量。与当前业界最先进（SOA）的IDD接收机相比，在65 nm CMOS工艺下实现的sEPA-IDD接收机具有3.07 Gb/s的吞吐量，最大增益为0.5 dB，实现了4.03倍的吞吐量提升和6.04倍更高的面积效率。
Keyword:
Expectation propagation (EP)
hardware implementation
iterative detection decoding
massive multiple-input multiple-output (MIMO)
polar codes

期刊

I
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
IF:
3.1
论文数:
503
被引数:
7.3K

机构

S
Southeast University
学者数:
2.1W
论文数: 8.6K
被引数: 480
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