Xu Weichao
教授

Gender:Male

Date of Birth:1970-04-26

Alma Mater:The University of Hong Kong

Education Level:PhD

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Honors and Titles:

广东工业大学优秀班主任

2019年度广东省自然科学奖二等奖

广东工业大学先进工作者

广东工业大学优秀教学成果二等奖

广东工业大学优秀教学成果一等奖

MOBILE Version

Paper Publications

Homotopy Approach for Energy-Efficient MIMO Systems With Zero-Forcing Transceivers

Release time:2021-11-02 Hits:

DOI number:10.1109/TVT.2016.2557658

Journal:IEEE Transactions on Vehicular Technology

Funded by:the National Natural Science Foundation of China under Project 61271380 and in part by the Guangdong

Key Words:Energy efficiency (EE), homotopy method, multiple-input multiple-output (MIMO), multi-user, piecewisedefined method, solution path, zero-forcing (ZF).

Abstract:This paper addresses energy efficiency (EE) optimization problems for uplink multiuser multiple-input–multipleoutput (MIMO) systems with zero-forcing (ZF) transceivers, subject to a joint power and rate constraint for each user. As the optimization problem considered in this paper is quite different from the traditional one, directly applying the Dinkelbach method to the new EE optimization problem cannot bring an advantage of low complexity. Hence, we try to propose a novel approach inspired by the homotopy algorithms, where we concentrate our attention on the solution path for the EE optimization. Making use of the piecewise-defined property between power allocations and the overall transmission power, we fit the entire path of solution for every value of the overall transmission power by replacing the search variable with a specially selected parameter. By checking only a finite number of breakpoints, we then try to propose a new homotopy-type algorithm to obtain the maximum EE in an exact closed form to reduce the computational complexity significantly. Simulation results verify the performance of the new method.

Co-author:Weichao Xu,Zhongfu Ye,Nan Hu,Chunqi Chang

First Author:Jisheng Dai

Indexed by:Journal paper

Volume:66

Issue:2

Page Number:1233-1247

Translation or Not:no

Date of Publication:2016-04-21

Included Journals:SCI

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@Guangdong University of Technology 中文