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Hybrid Precoding Design for SWIPT Joint Multicast-Unicast mmWave System with Subarray Structure

Hao, Wanming, Chu, Zheng, Zhou, Fuhui, Xiao, Pei, Leung, Victor C. M. and Tafazolli, Rahim (2019) Hybrid Precoding Design for SWIPT Joint Multicast-Unicast mmWave System with Subarray Structure In: IEEE International Conference on Communications, 20 - 24 May 2019, Shanghai.

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In this paper, we investigate the hybrid precoding design for joint multicast-unicast millimeter wave (mmWave) system, where the simultaneous wireless information and power transform is considered at receivers. The subarray-based sparse radio frequency chain structure is considered at base station (BS). Then, we formulate a joint hybrid analog/digital precoding and power splitting ratio optimization problem to maximize the energy efficiency of the system, while the maximum transmit power at BS and minimum harvested energy at receivers are considered. Due to the difficulty in solving the formulated problem, we first design the codebook-based analog precoding approach and then, we only need to jointly optimize the digital precoding and power splitting ratio. Next, we equivalently transform the fractional objective function of the optimization problem into a subtractive form one and propose a two-loop iterative algorithm to solve it. For the outer loop, the classic Bi-section iterative algorithm is applied. For the inner loop, we transform the formulated problem into a convex one by successive convex approximation techniques, which is solved by a proposed iterative algorithm. Finally, simulation results are provided to show the performance of the proposed algorithm.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Zhou, Fuhui
Leung, Victor C. M.
Date : 4 February 2019
Copyright Disclaimer : © Copyright 2019 IEEE
Depositing User : Charlene King
Date Deposited : 20 Mar 2019 11:14
Last Modified : 20 May 2019 02:08

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