Exploiting Non-Orthogonal Multiple Access in Cooperative Relay Sharing

We propose and investigate a dual-hop cooperative relaying scheme using non-orthogonal multiple access (NOMA) (termed NOMA-RS), where two sources communicate with their corresponding destinations in parallel over the same frequency band via a common relay. In this scheme, after receiving symbols transmitted in parallel by both sources with different allocated powers, the relay forwards a super-position coded composite signal using NOMA to the destinations. One of the main benefits of NOMA-RS is that multiple (two) sources can share the same relay, unlike the previous works. Through the simulations and mathematical analysis, we demonstrate the effectiveness of the proposed protocol in terms of ergodic sum capacity by considering perfect and imperfect successive interference cancellation.

[1]  Soo Young Shin,et al.  Cooperative Relaying Using Space-Time Block Coded Non-orthogonal Multiple Access , 2017, IEEE Transactions on Vehicular Technology.

[2]  Soung Chang Liew,et al.  A Primer on Physical-Layer Network Coding , 2015, A Primer on Physical-Layer Network Coding.

[3]  Miaowen Wen,et al.  Novel Receiver Design for the Cooperative Relaying System With Non-Orthogonal Multiple Access , 2016, IEEE Communications Letters.

[4]  Zhiguo Ding,et al.  A General Power Allocation Scheme to Guarantee Quality of Service in Downlink and Uplink NOMA Systems , 2016, IEEE Transactions on Wireless Communications.

[5]  Jinjin Men,et al.  Performance Analysis of Nonorthogonal Multiple Access for Relaying Networks Over Nakagami-$m$ Fading Channels , 2017, IEEE Transactions on Vehicular Technology.

[6]  H. Vincent Poor,et al.  Cooperative Non-Orthogonal Multiple Access in 5G Systems , 2015, IEEE Communications Letters.

[7]  Sungtae Kim,et al.  Capacity enhancement of secondary links through spatial diversity in spectrum sharing , 2010, IEEE Transactions on Wireless Communications.

[8]  In-Ho Lee,et al.  Non-Orthogonal Multiple Access in Coordinated Direct and Relay Transmission , 2015, IEEE Communications Letters.

[9]  Jinjin Men,et al.  Performance analysis of non-orthogonal multiple access in downlink cooperative network , 2015, IET Commun..

[10]  Fa-Long Luo,et al.  Non-Orthogonal Multiple Access (NOMA): Concept and Design , 2016 .

[11]  H. Vincent Poor,et al.  Relay Selection for Cooperative NOMA , 2016, IEEE Wireless Communications Letters.

[12]  In-Ho Lee,et al.  Capacity Analysis of Cooperative Relaying Systems Using Non-Orthogonal Multiple Access , 2015, IEEE Communications Letters.

[13]  Caijun Zhong,et al.  Non-Orthogonal Multiple Access With Cooperative Full-Duplex Relaying , 2016, IEEE Communications Letters.