Performance Trade-off Method for Energy Efficiency and Spectral Efficiency in Massive-MIMO System

doi:10.13190/j.jbupt.2019-163

Journal of Beijing University of Posts and Telecommunications ›› 2020, Vol. 43 ›› Issue (4): 61-67.doi: 10.13190/j.jbupt.2019-163

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Performance Trade-off Method for Energy Efficiency and Spectral Efficiency in Massive-MIMO System

LI Min-zheng^1,2, DING Jian³, LIU Ning³, WANG Hao³

1. School of Electronic Information Engineering, Shanghai Dianji University, Shanghai 201306, China;
2. Guangxin Information Science Research Centre, Guilin 541004, China;
3. School of Computer and Information Security, Guilin University of Electronic Technology, Guilin 541004, China

Received:2019-08-05 Published:2020-08-15

Abstract

Abstract: In massive-multiple input multiple output (massive-MIMO) multi-user system, the existing energy efficiency (EE) and spectral efficiency (SE) trade-off performance methods cannot adapt to the changing scenarios for single objective optimization, and thus cannot effectively track the optimization objectives. To solve this problem, a trade-off method of energy efficiency and spectral efficiency is proposed, which can adapt to the changing scenarios. By constructing a trade-off optimization function between them, the non-convex multi-objective optimization problem is transformed into a single-objective convex optimization problem, and solved by Lagrange multiplier method. The theoretical analysis and simulation results show that the proposed trade-off method can change the system energy efficiency or spectral efficiency by setting a trade-off factor under the power consumption limitation of the system circuit, and simultaneously obtain the optimal performance trade-off of energy efficiency and spectral efficiency.

Key words: multi-objective optimization, convex optimization, performance trade-off, trade-off factor

CLC Number:

TN929.5

LI Min-zheng, DING Jian, LIU Ning, WANG Hao. Performance Trade-off Method for Energy Efficiency and Spectral Efficiency in Massive-MIMO System[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(4): 61-67.

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Performance Trade-off Method for Energy Efficiency and Spectral Efficiency in Massive-MIMO System

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