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Joint Power and Subcarrier Allocation Optimization for Multigroup Multicast Systems with Rate Splitting

Chen, Hongzhi, Mi, De, Clerckx, Bruno, Chu, Zheng, Shi, Jia and Xiao, Pei (2019) Joint Power and Subcarrier Allocation Optimization for Multigroup Multicast Systems with Rate Splitting IEEE Transactions on Vehicular Technology, 69 (2). pp. 2306-2310.

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Abstract

In this article, we investigate a resource allocation problem for multicarrier multiuser MISO (multiple-input-Single-output) downlink systems, where multiple co-channel multicast groups are served simultaneously. We consider a rate-splitting transmission scheme to address the inevitable inter-group interference under an overloaded multigroup multicast scenario, where the insufficient number of transmit antennas prevents the conventional schemes from neutralizing the interference. We first formulate an optimization problem for maximizing the minimum multicast group rate among all groups on all available subcarriers. This problem involves a joint power and subcarrier allocation optimization, and is non-convex. We apply an iterative scheme based on successive convex approximation (SCA) to find the locally optimal solution. Simulation results demonstrate the performance gain of the proposed scheme compared to the state-of-the-art transmission schemes.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Chen, Hongzhihongzhi.chen@surrey.ac.uk
Mi, Ded.mi@surrey.ac.uk
Clerckx, Bruno
Chu, Zhengzheng.chu@surrey.ac.uk
Shi, Jiaj.shi@surrey.ac.uk
Xiao, PeiP.Xiao@surrey.ac.uk
Date : 6 December 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1109/TVT.2019.2957994
Copyright Disclaimer : Copyright (c) 2019 IEEE. Personal use of this material is permitted. However, permission to use this material for any other purposes must be obtained from the IEEE by sending a request to pubs-permissions@ieee.org
Uncontrolled Keywords : Resource management; Optimization; Interference; Precoding; Transmitting antennas; Multiplexing; NOMA
Depositing User : Diane Maxfield
Date Deposited : 10 Jan 2020 14:29
Last Modified : 27 Apr 2020 10:34
URI: http://epubs.surrey.ac.uk/id/eprint/853309

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