MIMO下行多用户中继系统的线性收发处理设计

doi:10.7523/j.issn.2095-6134.2015.03.013

中国科学院大学学报 ›› 2015, Vol. 32 ›› Issue (3): 378-383.DOI: 10.7523/j.issn.2095-6134.2015.03.013

MIMO下行多用户中继系统的线性收发处理设计

王川, 邱玲

中国科学技术大学个人通信与扩频实验室, 合肥 230027

收稿日期:2014-07-29 修回日期:2014-11-28 发布日期:2015-05-15
通讯作者: 邱玲
基金资助:
国家自然科学基金(11175173)资助

A linear transceiver design for multiuser MIMO relay downlink systems

WANG Chuan, QIU Ling

Personal Communication Network & Spread Spectrum Laboratory, University of Science and Technology of China, Hefei 230027, China

Received:2014-07-29 Revised:2014-11-28 Published:2015-05-15

摘要/Abstract

摘要：

针对单源单中继多用户多输入多输出下行系统,提出一种基于规则块对角化的收发处理设计.考虑源端无法获得第二跳的信道信息和用户无法获得第一跳的信道信息的场景,对源-中继链路和中继-用户链路进行独立的收发处理设计.在中继处采用传统的规则块对角化方法抑制用户间干扰和噪声,并基于最小均方误差准则联合接收矩阵设计改进的迭代优化算法.仿真结果表明,该算法收敛较快,且很好地降低了低信噪比区域的误码率.

关键词: 多用户多输入多输出, 中继, 规则块对角化, 最小化均方误差

Abstract:

A linear transceiver optimization design based on the regularized block diagonalization (RBD) algorithm is proposed for the multiuser multiple-input multiple-output (MU-MIMO) relay downlink system. Considering that the source can not obtain the channel state information (CSI) of the second hop and the user can not obtain the CSI of the first hop, we optimize the transceiver design for the source-relay link and the relay-multiuser link, respectively. We use RBD algorithm at the relay to reduce the multiuser interference and noise, and then joint the receiver matrix to design an improved iterative algorithm based on the minimum mean square error (MMSE) criterion. Simulation results show that the proposed algorithm converges to a fixed value in a few iterations and it has a good bit error rate (BER) performance within the low signal-to-noise ratio (SNR) region.

Key words: MU-MIMO, relay, RBD, MMSE

中图分类号:

TN929.5

王川, 邱玲. MIMO下行多用户中继系统的线性收发处理设计[J]. 中国科学院大学学报, 2015, 32(3): 378-383.

WANG Chuan, QIU Ling. A linear transceiver design for multiuser MIMO relay downlink systems[J]. , 2015, 32(3): 378-383.

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MIMO下行多用户中继系统的线性收发处理设计

A linear transceiver design for multiuser MIMO relay downlink systems

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