TY - JOUR
T1 - Outage Probability Analysis of Non-Orthogonal Multiple Access in Cloud Radio Access Networks
AU - Gu, Xiang
AU - Ji, Xiaodong
AU - Ding, Zhiguo
AU - Wu, Wenbin
AU - Peng, Mugen
N1 - Funding Information:
Manuscript received September 9, 2017; accepted October 5, 2017. Date of publication October 10, 2017; date of current version January 8, 2018. This work was supported in part by the State Major Science and Technology Special Project under Grant 2016ZX03001020-006, and in part by the National Natural Science Foundation of China under Grant 61361166005. The associate editor coordinating the review of this paper and approving it for publication was J. Zhang. (Corresponding author: Mugen Peng.) X. Gu, X. Ji, W. Wu, and M. Peng are with the Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China (e-mail: [email protected]; [email protected]; [email protected]; [email protected]).
Publisher Copyright:
© 2017 IEEE.
PY - 2018/1
Y1 - 2018/1
N2 - To improve system capacity and spectral efficiency, as well as support more connections in cloud radio access networks (C-RANs), the application of non-orthogonal multiple access (NOMA), a promising technique in the physical layer, is considered in this letter. The stochastic geometry is used to obtain the outage probability of NOMA-based downlink C-RAN, in which the remote radio heads are uniformly distributed and serve two paired users simultaneously. A closed-form approximation for the outage probability is derived, and Monte Carlo simulations are provided to validate the accuracy of the theoretical analysis. Compared with conventional multiple access techniques, both the obtained analytical and simulation results demonstrate that the proposed NOMA scheme can offer better spectral efficiency and user fairness in C-RANs.
AB - To improve system capacity and spectral efficiency, as well as support more connections in cloud radio access networks (C-RANs), the application of non-orthogonal multiple access (NOMA), a promising technique in the physical layer, is considered in this letter. The stochastic geometry is used to obtain the outage probability of NOMA-based downlink C-RAN, in which the remote radio heads are uniformly distributed and serve two paired users simultaneously. A closed-form approximation for the outage probability is derived, and Monte Carlo simulations are provided to validate the accuracy of the theoretical analysis. Compared with conventional multiple access techniques, both the obtained analytical and simulation results demonstrate that the proposed NOMA scheme can offer better spectral efficiency and user fairness in C-RANs.
KW - Cloud radio access networks (C-RANs)
KW - non-orthogonal multiple access (NOMA)
KW - outage probability
UR - http://www.scopus.com/inward/record.url?scp=85031774774&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2017.2761828
DO - 10.1109/LCOMM.2017.2761828
M3 - Article
AN - SCOPUS:85031774774
SN - 1089-7798
VL - 22
SP - 149
EP - 152
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 1
M1 - 8063963
ER -