Title :
Capacity Analysis of Cooperative Relaying Systems Using Non-Orthogonal Multiple Access
Author :
Jung-Bin Kim ; In-Ho Lee
Author_Institution :
Broadcasting & Telecommun. Media Res. Lab., ETRI, Daejeon, South Korea
Abstract :
In this letter, we propose the cooperative relaying system using non-orthogonal multiple access (NOMA) to improve the spectral efficiency. The achievable average rate of the proposed system is analyzed for independent Rayleigh fading channels, and also its asymptotic expression is provided. In addition, a suboptimal power allocation scheme for NOMA used at the source is proposed.
Keywords :
Rayleigh channels; channel capacity; cooperative communication; decode and forward communication; relay networks (telecommunication); NOMA; Rayleigh fading channels; capacity analysis; cooperative relaying systems; non-orthogonal multiple access; suboptimal power allocation scheme; Approximation methods; Fading; Protocols; Relays; Resource management; Signal to noise ratio; Spatial diversity; Cooperative relaying; Rayleigh fading channels; Rayleigh fading channels.; decode-and-forward relaying; non-orthogonal multiple access; rate analysis;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2472414
