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Radiated power scaling factor and its effect on the secrecy performance of multi-user massive MIMO system

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posted on 2023-06-08, 23:48 authored by Bin Chen, Chunsheng Zhu, Mithun Mukherjee, Zhengguo ShengZhengguo Sheng, Chunlin Xiong, Jibo Wei, Victor C M Leung
In this paper, we investigate the effect of radiated power scaling (RPS) factors on the secrecy performance of multiuser massive multiple-input multiple-output (MIMO) system. We consider secure forward link and reverse link transmissions in the scenario which includes a base station (BS) equipped with a large number of service antennas, multiple single-antenna legitimate users and a passive multiantenna eavesdropper. Specifically, maximum ratio transmission (MRT) and maximum ratio combining (MRC) techniques are used as linear precoder and detector, respectively, on the forward and reverse links. Lower and upper bounds on the ergodic achievable rates corresponding to legitimate users and the eavesdropper are derived, respectively. Then the optimal RPS factors which minimize the upper bounds on the achievable rates of the eavesdropper while satisfying the rate constraints of legitimate users are presented. We also show that the required total radiated power decreases as the number of BS antennas grows larger. Moreover, in the limit of an infinite number of BS antennas, we prove that the optimal RPS factors converge to constant limits. Our work suggests that with proper selected RPS factors, assive MIMO is an effective and low power consuming scheme to achieve both the transmission and security performance. Simulation results corroborate the analysis and demonstrate the secrecy performance achieved with proposed RPS factors under certain rate constraints of legitimate users.

History

Publication status

  • Published

File Version

  • Submitted version

Publisher

ACM

Page range

7-12

Presentation Type

  • paper

Event name

Proceedings of the Second Workshop on Mobile Sensing, Computing and Communication

Event location

Hangzhou, China

Event type

workshop

Event date

22-25 June 2015

Place of publication

New York, NY, USA

Series

MSCC '15

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2016-01-04

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