SCMA Codebook for Uplink Rician Fading Channels

被引：4
|
作者：
Lei, Tuofeng [1 ]
Ni, Shuyan [1 ]
Cheng, Naiping [1 ]
Chen, Shimiao [1 ]
Song, Xin [1 ]
机构：
[1] Space Engn Univ, Dept Elect & Opt Engn, Beijing 101416, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2023年 / 27卷 / 02期
关键词：
Rician channels; Uplink; Rayleigh channels; NOMA; Symbols; Signal to noise ratio; Euclidean distance; Sparse code multiple access; uplink Rician channel; key performance indicators; codebook design; K-FACTOR; DESIGN; NOMA;
D O I：
10.1109/LCOMM.2022.3230067
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, the codebook design criteria for uplink Rician fading channels are explored. The probability distribution of the weighted sums of the Rician random variables from each frequency resource is derived based on the independent non-central circular complex Gaussian random variable. Then, considering the pairwise error probability, the key performance indicators of multidimensional constellations for uplink Rician channels are explored. A sub-optimal optimization approach is deployed to generate an enhanced codebook for various Rician scenarios. Finally, numerical results are provided to verify the key performance indicators in the uplink Rician fading channels.
引用
收藏
页码：527 / 531
页数：5
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