Efficient Transmission Schemes for Low-Latency Networks: NOMA vs. Relaying

Authors

Y. Hu, M. C. Gursoy, A. Schmeink,

Abstract

        In this work, we focus on a low-latency multi-user broadcast network operating in the finite blocklength regime and employing a non-orthogonal multiple-access (NOMA) scheme. By letting the user with the stronger channel from the source act as a relay, we propose two relay-assisted transmission schemes, namely relaying and NOMA-relay. We study the finite blocklength performance of the proposed schemes in comparison with the NOMA scheme. Both the average performance of and fairness between users are considered. Our results show that the NOMA scheme is not preferred in the low-latency scenario in comparison to the proposed schemes. In particular, the relaying scheme generally provides the best fairness between users, while the NOMA-relay scheme is able to achieve a higher average throughput by setting the packet size relatively aggressively.

Index Terms

Finite blocklength, NOMA, DF, relaying

Awards

Best Paper Award

BibTEX Reference Entry 

@inproceedings{HuGuSc17,
	author = {Yulin Hu and Mustafa Cenk Gursoy and Anke Schmeink},
	title = "Efficient Transmission Schemes for Low-Latency Networks: NOMA vs. Relaying",
	booktitle = "{IEEE} International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)",
	address = {Montreal, QC, Canada},
	month = Oct,
	year = 2017,
	}

Downloads

 Download paper  Download bibtex-file

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights there in are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.