Paper Info
Title
Optimal Power Allocation Of Cooperative Noma With Finite Blocklength Codes
Abstract
Compared with orthogonal multiple access (OMA), non-orthogonal multiple access (NOMA) has enormous advantages in enhancing fairness and spectral efficiency for downlink transmission. To further improve the performance of NOMA, cooperative NOMA (C-NOMA) has attracted attention while power allocation of C-NOMA is of great importance to ameliorate the system performance. To guarantee the requirements of ultra-reliable and low-latency communication (URLLC) nowadays, the code length is supposed to be short enough where finite blocklength (FBL) codes are adopted. This paper presents a two-user half-duplex downlink C-NOMA scheme with low latency constraint. To minimize the error probability, power allocation problems are formulated. For this purpose, the properties of power allocation to objective functions are investigated. First, the error probability is analysed in terms of signal-to-noise ratio. Afterwards, the convexity of the power allocation problems under certain conditions are shown and optimal algorithms that solve the problems are proposed. Numerical results demonstrate that the proposed C-NOMA with finite blocklength codes successfully achieve lower error probability with regard to the conventional NOMA.
Year
DOI
Venue
2020
10.1109/WCSP49889.2020.9299853
2020 12TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP)
Keywords
DocType
ISSN
Cooperative non-orthogonal multiple access (C-NOMA), finite blocklength (FBL), ultra-reliable and low-latency communication (URLLC), power allocation
Conference
2325-3746
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Siling Liu100.34
Zhengchuan Chen200.34
Jinfeng Xie300.34
Liang Liang4418.91
Min Wang57627.77
Yunjian Jia66713.92