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Hybrid Beamforming With Variable RF Attenuator for Multi-User mmWave Systems | IEEE Journals & Magazine | IEEE Xplore

Hybrid Beamforming With Variable RF Attenuator for Multi-User mmWave Systems

Publisher: IEEE

Abstract:

In this paper, we propose a novel hybrid beamforming design algorithm in multi-user massive multiple-input-multiple-output millimeter-wave channels. In the proposed struc...View more

Abstract:

In this paper, we propose a novel hybrid beamforming design algorithm in multi-user massive multiple-input-multiple-output millimeter-wave channels. In the proposed structure, we employ variable radio frequency attenuators at each phase shifter which flexibly controls the transmit signal amplitude to achieve the performance of fully digital (FD) precoders. We formulate a power loss minimization problem which can be easily solved via the alternating optimization process. Simulation results demonstrate that the proposed architecture achieves the same performance as the FD scheme with the reduced number of radio frequency chains and the proposed scheme exhibits a 37.4% power gain over conventional methods.
Published in: IEEE Transactions on Vehicular Technology ( Volume: 69, Issue: 8, August 2020)
Page(s): 9131 - 9134
Date of Publication: 21 May 2020

ISSN Information:

Publisher: IEEE

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