Title :
Cooperative Non-Orthogonal Multiple Access in 5G Systems
Author :
Zhiguo Ding ; Mugen Peng ; Poor, H. Vincent
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
Non-orthogonal multiple access (NOMA) has received considerable recent attention as a promising candidate for 5G systems. A key feature of NOMA is that users with better channel conditions have prior information about the messages of other users. This prior knowledge is fully exploited in this letter, where a cooperative NOMA scheme is proposed. The outage probability and diversity order achieved by this cooperative NOMA scheme are analyzed, and an approach based on user pairing is also proposed to reduce system complexity.
Keywords :
5G mobile communication; cooperative communication; diversity reception; multi-access systems; probability; telecommunication network reliability; wireless channels; 5G system; cooperative NOMA scheme; cooperative nonorthogonal multiple access system; diversity order; outage probability; system complexity reduction; Base stations; Complexity theory; Diversity reception; Interference; Reliability; Resource management; Signal to noise ratio; 5G communications; Non-orthogonal multiple access (NOMA); cooperative multiple access;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2441064
