Research Article
Hybrid NOMA/OMA with Buffer-Aided Relaying for Cooperative Uplink System
@INPROCEEDINGS{10.1007/978-3-030-38819-5_11, author={Jianping Quan and Peng Xu and Yunwu Wang and Zheng Yang}, title={Hybrid NOMA/OMA with Buffer-Aided Relaying for Cooperative Uplink System}, proceedings={Quality, Reliability, Security and Robustness in Heterogeneous Systems. 15th EAI International Conference, QShine 2019, Shenzhen, China, November 22--23, 2019, Proceedings}, proceedings_a={QSHINE}, year={2020}, month={1}, keywords={Hybrid NOMA/OMA Buffer-aided relaying Cooperative uplink system}, doi={10.1007/978-3-030-38819-5_11} }- Jianping Quan
Peng Xu
Yunwu Wang
Zheng Yang
Year: 2020
Hybrid NOMA/OMA with Buffer-Aided Relaying for Cooperative Uplink System
QSHINE
Springer
DOI: 10.1007/978-3-030-38819-5_11
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.