• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

A Spectral Efficient NOMA-based Two-Way Relaying Scheme for Wireless Networks with Two Relays

Vol. 15, No. 1, January 31, 2021
10.3837/tiis.2021.01.020, Download Paper (Free):

Abstract

This paper proposes a novel two-way relaying (TWR) approach for a two-relay wireless network based on non-orthogonal multiple access (NOMA), where two terminals exchange messages with a cellular base station (BS) via two intermediate relay stations (RSs). We propose a NOMA-based TWR approach with two relaying schemes, i.e., amplify-and-forward (AF) and decode-and-forward (DF), referred to as NOMA-AF and NOMA-DF. The sum-rate performance of our proposed NOMA-AF and NOMA-DF is analyzed. A closed-form sum-rate upper bound for the NOMA-AF is obtained, and the exact ergodic sum-rate of NOMA-DF is also derived. The asymptotic sum-rate of NOMA-AF and NOMA-DF is also analyzed. Simulation results show that the proposed scheme outperforms conventional orthogonal multiple access based transmission schemes. It is also shown that increasing the transmit power budget of the relays only cannot always improve the sum-rates.


Statistics

Show / Hide Statistics

Statistics (Cumulative Counts from December 1st, 2015)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.


Cite this article

[IEEE Style]
G. Li, "A Spectral Efficient NOMA-based Two-Way Relaying Scheme for Wireless Networks with Two Relays," KSII Transactions on Internet and Information Systems, vol. 15, no. 1, pp. 365-382, 2021. DOI: 10.3837/tiis.2021.01.020.

[ACM Style]
Guosheng Li. 2021. A Spectral Efficient NOMA-based Two-Way Relaying Scheme for Wireless Networks with Two Relays. KSII Transactions on Internet and Information Systems, 15, 1, (2021), 365-382. DOI: 10.3837/tiis.2021.01.020.