TY - JOUR
T1 - Performance analysis of FD-NOMA-based decentralized V2X systems
AU - Zhang, Di
AU - Liu, Yuanwei
AU - Dai, Linglong
AU - Bashir, Ali Kashif
AU - Nallanathan, Arumugam
AU - Shim, Byonghyo
N1 - Funding Information:
Manuscript received August 24, 2018; revised December 23, 2018 and February 20, 2019; accepted March 2, 2019. Date of publication March 12, 2019; date of current version July 13, 2019. The work of D. Zhang and B. Shim is supported by the NRF grant funded by the Korean Government (MSIP2014R1A5A1011478). The work of D. Zhang is also supported by the Zhengzhou University Startup Foundation (32210907), the National Natural Science Foundation of China (61801435), the China Postdoctoral Science Foundation (2018M633733). The work of L. Dai is supported by the National Natural Science Foundation of China for Outstanding Young Scholars (Grant No. 61722109) and the National Science and Technology Major Project of China (Grant No. 2018ZX03001004-003). The associate editor coordinating the review of this paper and approving it for publication was H. Zhang. (Corresponding author: Byonghyo Shim.) D. Zhang is with the School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China, also with the Information System Laboratory, Seoul National University, Seoul 08826, South Korea, and also with the Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea (e-mail: di_zhang@zzu.edu.cn).
Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - In order to meet the requirements of massively connected devices, different quality of services (QoS), various transmit rates, and ultra-reliable and low latency communications (URLLC) in vehicle-to-everything (V2X) communications, we introduce a full duplex non-orthogonal multiple access (FD-NOMA)-based decentralized V2X system model. We, then, classify the V2X communications into two scenarios and give their exact capacity expressions. To solve the computation complicated problems of the involved exponential integral functions, we give the approximate closed-form expressions with arbitrary small errors. Numerical results indicate the validness of our derivations. Our analysis has that the accuracy of our approximate expressions is controlled by the division of π2 in the urban and crowded scenarios, and the truncation point ${T}$ in the suburban and remote scenarios. Numerical results manifest that: 1) increasing the number of V2X device, NOMA power, and Rician factor value yields a better capacity performance; 2) effect of FD-NOMA is determined by the FD self-interference and the channel noise; and 3) FD-NOMA has a better latency performance compared with other schemes.
AB - In order to meet the requirements of massively connected devices, different quality of services (QoS), various transmit rates, and ultra-reliable and low latency communications (URLLC) in vehicle-to-everything (V2X) communications, we introduce a full duplex non-orthogonal multiple access (FD-NOMA)-based decentralized V2X system model. We, then, classify the V2X communications into two scenarios and give their exact capacity expressions. To solve the computation complicated problems of the involved exponential integral functions, we give the approximate closed-form expressions with arbitrary small errors. Numerical results indicate the validness of our derivations. Our analysis has that the accuracy of our approximate expressions is controlled by the division of π2 in the urban and crowded scenarios, and the truncation point ${T}$ in the suburban and remote scenarios. Numerical results manifest that: 1) increasing the number of V2X device, NOMA power, and Rician factor value yields a better capacity performance; 2) effect of FD-NOMA is determined by the FD self-interference and the channel noise; and 3) FD-NOMA has a better latency performance compared with other schemes.
KW - V2X
KW - Vehicle communications
KW - capacity analysis.
KW - full duplex
KW - non-orthogonal multiple access
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U2 - 10.1109/TCOMM.2019.2904499
DO - 10.1109/TCOMM.2019.2904499
M3 - Article
AN - SCOPUS:85069788734
SN - 0090-6778
VL - 67
SP - 5024
EP - 5036
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 7
M1 - 8666065
ER -