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학술지 Transmit Power Control Game With a Sum Power Constraint in Cell-Free Massive MIMO Downlink
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저자
명정호, 김근영, 고영조
발행일
202203
출처
IEEE Wireless Communications Letters, v.11 no.3, pp.632-635
ISSN
2162-2337
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LWC.2021.3139128
협약과제
21HH1800, [통합과제] 초고주파 이동통신 무선백홀 전문연구실, 고영조
초록
We propose a transmit power control game, where we assume that distributed access points are rational, i.e., they will determine the transmit power to maximize their own utility functions. The utility function of each AP is defined as the estimated downlink sum-rate minus a linear price function of the transmit power. The existence of the Nash-equilibrium of the proposed game is analyzed. In order to find the optimal price value for efficient transmit power allocation, an iterative search algorithm is also proposed. Simulation results show that the average spectral efficiency of the proposed scheme is better than that of both the equal transmit power allocation and waterfilling-based power allocation.
키워드
Cell-free massive MIMO, power control algorithm, transmit power control, utility function
KSP 제안 키워드
Access point, Nash equilibrium(NE), Power control(PC), Search Algorithm(GSA), Spectral efficiency(SE), Sum rate, Transmit power control, average spectral efficiency, cell-free, control algorithm, iterative search