TY - JOUR
T1 - The Impact of Power Allocation on Cooperative Non-orthogonal Multiple Access Networks with SWIPT
AU - Yang, Zheng
AU - Ding, Zhiguo
AU - Fan, Pingzhi
AU - Al-Dhahir, Naofal
N1 - Funding Information:
Manuscript received June 4, 2016; revised November 2, 2016 and February 21, 2017; accepted April 11, 2017. Date of publication May 2, 2017; date of current version July 10, 2017. The work of Z. Yang was supported in part by the National Science and Technology Major Project under Grant 2016ZX03001018-002, in part by the Huawei HIRP Project under Grant YB201504, in part by the National Natural Science Foundation of China under Grant 61571128, and in part by the 111 Project under Grant 111-2-14. The work of Z. Ding was supported in part by the U.K. EPSRC under Grant EP/L025272/1 and in part by H2020-MSCA-RISE-2015 under Grant 690750. The work of P. Fan was supported in part by the National Science and Technology Major Project under Grant 2016ZX03001018-002, in part by the Huawei HIRP Project under Grant YB201504, and in part by the 111 Project under Grant 111-2-14. The work of N. Al-Dhahir was supported by NPRP from the Qatar National Research Fund under Grant NPRP 8-627-2-260. The associate editor coordinating the review of this paper and approving it for publication was M. Vu. (Corresponding author: Zheng Yang.) Z. Yang is with the Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 610031, China, and also with the College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, China (e-mail: [email protected]).
Publisher Copyright:
© 2017 IEEE.
PY - 2017/7
Y1 - 2017/7
N2 - In this paper, a cooperative non-orthogonal multiple access (NOMA) network is considered, where a source communicates with two users through an energy harvesting relay. The impact of two types of NOMA power allocation policies, namely NOMA with fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA), on the considered cooperative simultaneous wireless information and power transfer (SWIPT) system is investigated. In particular, closed-form expressions for the outage probability and their high SNR approximations are derived to characterize the performance of SWIPT-F-NOMA and SWIPT-CR-NOMA. These developed analytical results demonstrate that the two power allocation policies realize different tradeoffs between the reception reliability, user fairness and system complexity. Compared with the conventional SWIPT relaying networks with orthogonal multiple access (OMA), the proposed NOMA schemes can effectively reduce the outage probability, although all of them realize the same diversity gain.
AB - In this paper, a cooperative non-orthogonal multiple access (NOMA) network is considered, where a source communicates with two users through an energy harvesting relay. The impact of two types of NOMA power allocation policies, namely NOMA with fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA), on the considered cooperative simultaneous wireless information and power transfer (SWIPT) system is investigated. In particular, closed-form expressions for the outage probability and their high SNR approximations are derived to characterize the performance of SWIPT-F-NOMA and SWIPT-CR-NOMA. These developed analytical results demonstrate that the two power allocation policies realize different tradeoffs between the reception reliability, user fairness and system complexity. Compared with the conventional SWIPT relaying networks with orthogonal multiple access (OMA), the proposed NOMA schemes can effectively reduce the outage probability, although all of them realize the same diversity gain.
KW - cognitive radio
KW - diversity gain
KW - Non-orthogonal multiple access
KW - outage probability
KW - simultaneous wireless information and power transfer
UR - http://www.scopus.com/inward/record.url?scp=85028964715&partnerID=8YFLogxK
U2 - 10.1109/TWC.2017.2697380
DO - 10.1109/TWC.2017.2697380
M3 - Article
AN - SCOPUS:85028964715
SN - 1536-1276
VL - 16
SP - 4332
EP - 4343
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 7
M1 - 7917312
ER -