TY - GEN
T1 - User pairing in non-orthogonal multiple access downlink transmissions
AU - Ding, Zhiguo
AU - Fan, Pingzhi
AU - Poor, H. Vincent
N1 - Funding Information:
The work of Z. Ding was supported by the UK EPSRC under Grant EP/L025272/1. This research was also supported in part by the U. S. National Science Foundation under Grants CNS-1456793 and ECCS-1343210. The work of P. Fan was supported by the 973 Program (No. 2012CB316100), NSFC Project (No. 61471302), the 111 Project (No. 111- 2-14).
PY - 2015
Y1 - 2015
N2 - The aim of this paper is to study how to enlarge the performance gap between non-orthogonal multiple access (NOMA) and conventional orthogonal multiple access (MA) by applying user pairing. Particularly two user pairing schemes achieving different quality of service (QoS) requirements, namely NOMA with fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA), are proposed. For F-NOMA, both analytical and numerical results are provided to demonstrate that F-NOMA can offer a larger sum rate than orthogonal MA, and the performance gain of F-NOMA over conventional MA can be further enlarged by selecting users whose channel conditions are more distinctive. For CR-NOMA, the QoS requirements for users with poorer channel conditions can be guaranteed since the transmit power allocated to other users is constrained following the concept of cognitive radio networks. Because of this constraint, CR-NOMA has different behavior compared to F-NOMA, as demonstrated by the developed analytical results.
AB - The aim of this paper is to study how to enlarge the performance gap between non-orthogonal multiple access (NOMA) and conventional orthogonal multiple access (MA) by applying user pairing. Particularly two user pairing schemes achieving different quality of service (QoS) requirements, namely NOMA with fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA), are proposed. For F-NOMA, both analytical and numerical results are provided to demonstrate that F-NOMA can offer a larger sum rate than orthogonal MA, and the performance gain of F-NOMA over conventional MA can be further enlarged by selecting users whose channel conditions are more distinctive. For CR-NOMA, the QoS requirements for users with poorer channel conditions can be guaranteed since the transmit power allocated to other users is constrained following the concept of cognitive radio networks. Because of this constraint, CR-NOMA has different behavior compared to F-NOMA, as demonstrated by the developed analytical results.
UR - http://www.scopus.com/inward/record.url?scp=84964851021&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964851021&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2014.7417061
DO - 10.1109/GLOCOM.2014.7417061
M3 - Conference contribution
AN - SCOPUS:84964851021
T3 - 2015 IEEE Global Communications Conference, GLOBECOM 2015
BT - 2015 IEEE Global Communications Conference, GLOBECOM 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 58th IEEE Global Communications Conference, GLOBECOM 2015
Y2 - 6 December 2015 through 10 December 2015
ER -