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http://dx.doi.org/10.5573/ieie.2015.52.3.019

Optimization of the Number of Antennas for Energy Efficiency in Massive MIMO WPCN  

Han, Yonggue (Department of Electrical and Electronic Engineering, Yonsei University)
Sim, Dongkyu (Department of Electrical and Electronic Engineering, Yonsei University)
Lee, Chungyong (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.3, 2015 , pp. 19-24 More about this Journal
Abstract
We introduce an optimization of the number of base station antennas in massive multiple-input multiple-output (MIMO) wireless powered communication network (WPCN). We use channel hardening property of massive MIMO system to approximate channel gain in terms of the number of base station antennas. Then, we find an optimal solution by partial differential and obtain a closed form solution by using Lambert-W function. The simulation results show that the approximation and the method of solving the optimization problem are reasonable, and the optimal solution of proposed scheme is almost identical to the optimal number of base station antennas by the exhaustive search method.
Keywords
Massive MIMO; energy harvesting; WPCN;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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