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Resource Allocation in Multi-User NOMA Wireless Systems

  • Mingyao Peng
  • , Jie Zeng
  • , Bei Liu
  • , Jiajia Mei
  • , Xin Su
  • , Xibin Xu
  • , Limin Xiao
  • Chongqing University of Posts and Telecommunications
  • Tsinghua University
  • University of Electronic Science and Technology of China

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Non-orthogonal multiple access (NOMA) has been considered as a key candidate technology for 5G wireless systems due to its superior spectral efficiency and system capacity. With the ever-development of wireless body sensor networks (WBSNs) and wireless communications, supporting real-time communications in the telemedicine communication becomes a very important challenge. In this article, our goal is to maximize the overall system throughput by optimizing sub-band allocation and power allocation, thereby improving real-time performance in telemedicine communications. Assuming that the base station could obtain perfect channel state information (CSI), we propose a suboptimal sub-band allocation algorithm with low complexity. In the power allocation scheme, the closed-form expressions of power allocation factors for multiplexed users on each subband are obtained based on the Karush-Kuhn-Tucker (KKT) optimality conditions. Simulation results demonstrate that the proposed resource allocation scheme is closest to the ideal subband allocation based on exhaustive search and is superior to other schemes.

Original languageEnglish
Title of host publication12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781538633892
DOIs
Publication statusPublished - 11 Dec 2018
Externally publishedYes
Event12th International Symposium on Medical Information and Communication Technology, ISMICT 2018 - Sydney, Australia
Duration: 26 Mar 201828 Mar 2018

Publication series

NameInternational Symposium on Medical Information and Communication Technology, ISMICT
Volume2018-March
ISSN (Print)2326-828X
ISSN (Electronic)2326-8301

Conference

Conference12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
Country/TerritoryAustralia
CitySydney
Period26/03/1828/03/18

Keywords

  • Non-orthogonal multiple access (NOMA)
  • maximum sum rate
  • power allocation
  • sub-band allocation
  • telemedicine communication

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