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Hybrid NOMA/OMA with Buffer-Aided Relaying for Cooperative Uplink System

  • Jianping Quan
  • Peng XuEmail author
  • Yunwu Wang
  • Zheng Yang
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 300)

Abstract

In this paper, we consider a cooperative uplink network consisting of two users, a half-duplex decode-and-forward (DF) relay and a base station (BS). In the relaying network, the two users transmit packets to the buffer-aided relay using non-orthogonal multiple access (NOMA) or orthogonal multiple access (OMA) technology. We proposed a hybrid NOMA/OMA based mode selection (MS) scheme, which adaptively switches between the NOMA and OMA transmission modes according to the instantaneous strength of wireless links and the buffer state. Then, the state transmission matrix probabilities of the corresponding Markov chain is analyzed, and the performance in terms of sum throughput, outage probability, average packet delay and diversity gain are evaluated with closed form expressions. Numerical results are provided to demonstrate that hybrid NOMA/OMA achieves significant performance gains compared to conventional NOMA and OMA in most scenarios.

Keywords

Hybrid NOMA/OMA Buffer-aided relaying Cooperative uplink system 

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2020

Authors and Affiliations

  • Jianping Quan
    • 1
  • Peng Xu
    • 1
    Email author
  • Yunwu Wang
    • 1
  • Zheng Yang
    • 2
  1. 1.Chongqing Key Laboratory of Mobile Communications Technology, School of Communication and Information EngineeringChongqing University of Posts and TelecommunicationsChongqingChina
  2. 2.Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of EducationFujian Normal UniversityFuzhouChina

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