基于稀疏贝叶斯联合估计的多天线信号判决反馈频域均衡方法

张凯; 李盛祥

doi:10.12263/DZXB.20221390

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基于稀疏贝叶斯联合估计的多天线信号判决反馈频域均衡方法

学术论文 | 更新时间：2025-12-08

- 基于稀疏贝叶斯联合估计的多天线信号判决反馈频域均衡方法
- Decision Feedback Frequency-Domain Equalization of Multi-Antenna Signals Based on Sparse Bayesian Joint Estimation
- 电子学报 2023年51卷第7期页码：1750-1757
- 作者机构：
  
  电子信息系统复杂电磁环境效应国家重点实验室，河南洛阳 471003
- 作者简介：
  
  [ "张凯男，1988年5月出生于河南省洛阳市.现为电子信息系统复杂电磁环境效应国家重点实验室工程师、博士，主要从事无线通信、通信信号处理方面的研究工作.E-mail: zk_xxgc@163.com" ]
  [ "李盛祥男，1991年12月出生于湖南省邵阳市.现为电子信息系统复杂电磁环境效应国家重点实验室工程师、博士，主要从事通信信号处理、强化学习方面的研究工作.E-mail: lishengxiangzz@163.com" ]
- 基金信息：
  
  国家自然科学基金(62001476)
- DOI：10.12263/DZXB.20221390
  中图分类号： TN911.5
- 收稿：2022-12-12，
  
  修回：2023-03-14，
  
  纸质出版：2023-07-25
- 稿件说明：
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张凯,李盛祥.基于稀疏贝叶斯联合估计的多天线信号判决反馈频域均衡方法[J].电子学报,2023,51(07):1750-1757.

ZHANG Kai,LI Sheng-xiang.Decision Feedback Frequency-Domain Equalization of Multi-Antenna Signals Based on Sparse Bayesian Joint Estimation[J].ACTA ELECTRONICA SINICA,2023,51(07):1750-1757.
张凯,李盛祥.基于稀疏贝叶斯联合估计的多天线信号判决反馈频域均衡方法[J].电子学报,2023,51(07):1750-1757. DOI： 10.12263/DZXB.20221390.

ZHANG Kai,LI Sheng-xiang.Decision Feedback Frequency-Domain Equalization of Multi-Antenna Signals Based on Sparse Bayesian Joint Estimation[J].ACTA ELECTRONICA SINICA,2023,51(07):1750-1757. DOI： 10.12263/DZXB.20221390.

摘要

相比于经典解耦处理的前馈均衡方法，判决反馈均衡具有更优的性能，但现有方法主要针对收发静止或理想载波同步的情形.本文提出了一种针对未理想载波同步多天线信号的判决反馈频域均衡方法.文中首先基于最小均方误差准则推导了多天线联合判决反馈频域均衡优化模型，针对模型中残余频偏、信道系数、噪声方差等参数难以直接求解问题，给出了基于稀疏贝叶斯的迭代估计方法，并通过近似计算，给出了所有参数估计式的闭式解，避免了网格搜索带来的计算量负担.所提方法综合考虑多天线信号接收处理不同环节之间的关联性，采用迭代处理方法进行联合寻优.仿真实验表明，所提方法能够有效抑制信道衰落的影响，与现有方法相比，在接收单元数目较少和信噪比较高时优势体现更加明显.

Abstract

Compared with the classical decoupling feedforward equalization method

the decision feedback equalization (DFE) method has better performance. However

current methods mainly aim at the case of static or ideal carrier synchronization. In this paper

a new frequency domain DFE method is proposed for carrier unsynchronized multi-antenna signals. Firstly

the optimization model of multi-antenna joint frequency domain DFE is derived based on the minimum mean square error (MMSE) criterion. Aiming at the difficult problem of direct estimating the residual frequency offsets

channel coefficients and noise variances

an iterative estimation scheme based on sparse Bayesian learning (SBL) is given. Closed-form solutions of all parameter estimation formulas are given through approximate calculation to avoid the computational burden caused by grid search. The proposed method comprehensively considers the correlation among different steps of multi-antenna signal reception and processing

and adopts iterative processing method for joint optimization. Simulation results show that the proposed method can effectively suppress the influence of channel fading

and the advantages are more obvious when the number of receiving units is small and the signal-to-noise ratio (SNR) is high compared with the existing methods.

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references

MIETZNER J , SCHOBER R , LAMPE L , et al . Multiple-antenna techniques for wireless communications-a comprehensive literature survey [J]. IEEE Communications Surveys & Tutorials , 2009 , 11 ( 2 ): 87 - 105 .

DUAN C , ZHAN Y , KONG Q . A frequency domain based signal combining method for distributed antenna arraying [J]. China Communications , 2019 , 16 ( 8 ): 176 - 184 .

BALABAN P , SALZ J . Optimum diversity combining and equalization in digital data transmission with applications to cellular mobile radio. I. Theoretical considerations [J]. IEEE Transactions on Communications , 1992 , 40 ( 5 ): 885 - 894 .

LI Y , DING Z . A simplified approach to optimum diversity combining and equalization in digital data transmission [J]. IEEE Transactions on Communications , 1995 , 43 ( 8 ): 2285 - 2288 .

ZHENG Y R , XIAO C S . Channel estimation for frequency-domain equalization of single-carrier broadband wireless communications [J]. IEEE Transactions on Vehicular Technology , 2009 , 58 ( 2 ): 815 - 823 .

顾晨阳 , 杨瑞 , 盛文钦 , 等 . 单载波频域均衡系统中一种简化的IBDFE算法 [J]. 电子学报 , 2014 , 42 ( 9 ): 1699 - 1704 .

GU C Y , YANG R , SHENG W Q , et al . A simplification of IBDFE algorithm in single carrier frequency domain equalization system [J]. Acta Electronical Sinica , 2014 , 42 ( 9 ): 1699 - 1704 . (in Chinese)

ZHE P F , ZHU Y , LETAIEF K BEN . Robust single-carrier frequency-domain equalization for broadband MIMO systems with imperfect channel estimation [J]. IEEE Transactions on Wireless Communications , 2018 , 17 ( 7 ): 4432 - 4446 .

YANG Y G , CHO N I , LEE S U . Fast blind equalization by using frequency domain block constant modulus algorithm [C]// 38th Midwest Symposium on Circuits and Systems . Piscataway : IEEE , 2002 : 1003 - 1006 .

陈紫阳 , 胡赟鹏 , 沈智翔 , 等 . 基于频域波形合成的盲空间分集均衡器设计 [J]. 电子学报 , 2018 , 46 ( 5 ): 1121 - 1127 .

CHEN Z Y , HU Y P , SHEN Z X , et al . A novel spatial diversity equalizer based on frequency-domain waveform combining [J]. Acta Electronica Sinica , 2018 , 46 ( 5 ): 1121 - 1127 . (in Chinese)

CHOI J . A joint channel estimation and detection for frequency-domain equalization using an approximate EM algorithm [J]. Signal Processing , 2004 , 84 ( 5 ): 865 - 880 .

JIANG Z , SHEN X H , WANG H Y , et al . Joint PSK data detection and channel estimation under frequency selective sparse multipath channels [J]. IEEE Transactions on Communications , 2020 , 68 ( 5 ): 2726 - 2739 .

ZHANG K , YU H Y , HU Y P , et al . ML-based iterative approach for blind frequency domain equalization and combination over sparse channels [J]. IEEE Communications Letters , 2018 , 22 ( 1 ): 193 - 196 .

张凯 , 于宏毅 , 胡赟鹏 , 等 . 基于EM-SBL迭代的稀疏SIMO信道频域盲均衡算法 [J]. 电子学报 , 2018 , 46 ( 2 ): 372 - 380 .

ZHANG K , YU H Y , HU Y P , et al . Blind frequency-domain equalization for sparse SIMO channels based on iterative EM-SBL algorithm [J]. Acta Electronica Sinica , 2018 , 46 ( 2 ): 372 - 380 . (in Chinese)

ZHANG K , YU H Y , HU Y P , et al . Blind identification of multichannel systems based on sparse Bayesian learning [J]. IEICE Transactions on Communications , 2016 , E99-B( 12 ): 2614 - 2622 .

SHUTIN D , BUCHGRABER T , KULKARNI S R , et al . Fast variational sparse Bayesian learning with automatic relevance determination for superimposed signals [J]. IEEE Transactions on Signal Processing , 2011 , 59 ( 12 ): 6257 - 6261 .

HWANG K , CHOI S . Blind equalizer for constant-modulus signals based on Gaussian process regression [J]. Signal Processing , 2012 , 92 ( 6 ): 1397 - 1403 .

NAKAGAWA T , MATSUI M , KOBAYASHI T , et al . Non-data-aided wide-range frequency offset estimator for QAM optical coherent receivers [C]// Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011 . Washington D C : OSA , 2011 : 1 - 3 .

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