降低复杂度的多用户MIMO下行收发联合设计

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (3): 107-111.doi: 10.13190/jbupt.201003.107.wangl

王丽, 崔维嘉, 胡捍英

WANG Li, CUI Wei-jia, HU Han-ying

(Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China)

Received:2009-07-28 Revised:2010-01-08 Online:2010-06-28 Published:2010-05-14

摘要：

为降低受总功率约束基于最小和均方误差(sumMSE)准则的多用户多输入多输出(MIMO)下行收发联合

设计的计算复杂度，提出一种不需求解拉格朗日因子的收发联合设计方法. 通过将总功率条件约束优化

转化为无条件约束的优化问题，避免了求解非线性高阶方程来计算拉格朗日因子. 仿真结果表明，相对

于采用数值近似得到拉格朗日因子的收发联合设计方法，本算法在有效降低计算复杂度的同时，可显

著提高系统的误码性能.

关键词: 多用户多入多出, 收发联合设计, 最小和均方误差准则, 拉格朗日因子

Abstract:

A method to reduce the complexity of joint transceiver design based on minimum sum mean

square error (sum-MSE) criterion under the constraint of sum power for multiuser multiple-input

multiple-output (MIMO) is presented by transforming the conditional optimization problem into

unconditional optimization(it doesn’t need to solve the nonlinear high order equation to obtain

Lagrangian multiplier). Simulation results indicate that the proposed algorithm can effectively

reduce the computation complexity as well as improve the BER performance remarkably.

Key words: multiuser multiple-input multiple-output, joint transceiver design, minimum sum mean square error criterion, Lagrangian multiplier

王丽崔维嘉胡捍英. 降低复杂度的多用户MIMO下行收发联合设计[J]. 北京邮电大学学报, 2010, 33(3): 107-111.

WANG Li, CUI Wei-jia, HU Han-ying.

A Complexity-Reduced Joint Transceiver Design for 

Multiuser MIMO Downlink [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(3): 107-111.

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