Joint rate and power optimization for SIC in uplink NOMA systems

被引:3
|
作者
He, Meilin [1 ]
Song, Guanghui [1 ]
Cheng, Jun [1 ]
机构
[1] Doshisha Univ, Dept Intelligent Informat Engn & Sci, Kyoto 6100321, Japan
来源
IEICE COMMUNICATIONS EXPRESS | 2018年 / 7卷 / 02期
基金
日本学术振兴会;
关键词
non-orthogonal multiple access systems; successive interference cancellation; joint rate and power optimization;
D O I
10.1587/comex.2017XBL0175
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
To implement K-user multi-rate multi-power transmission in non-orthogonal multiple access systems with successive interference cancellation, a repeat accumulator code serially concatenated with a spreading is employed for each user to implement a variable, low-rate coding. A joint rate and power optimization (RPO) is proposed to maximize the sum rate with error free decoding. Numerical results show that our proposed coding-spreading scheme with joint RPO, supporting the multi-rate transmission with the same structure of encoder, approaches the Shannon limit.
引用
收藏
页码:48 / 53
页数:6
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