SCMA codebooks design for Rayleigh fading channel

Tuofeng LEI; Shuyan NI; Naiping CHENG; Xin SONG

doi:10.11959/j.issn.1000-436x.2022064

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SCMA codebooks design for Rayleigh fading channel

Papers | 更新时间：2024-06-05

- SCMA codebooks design for Rayleigh fading channel
- Journal on Communications Vol. 43, Issue 4, Pages: 107-113(2022)
- 作者机构：
  
  1. 航天工程大学研究生院，北京 101416
  2. 航天工程大学电子与光学工程系，北京 101416
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61805283)
- DOI：10.11959/j.issn.1000-436x.2022064
  CLC： TN914.5
- Online First：2022-04，
  
  Published：25 April 2022
- 稿件说明：
移动端阅览
Tuofeng LEI, Shuyan NI, Naiping CHENG, et al. SCMA codebooks design for Rayleigh fading channel[J]. Journal on Communications, 2022, 43(4): 107-113.
DOI：

Tuofeng LEI, Shuyan NI, Naiping CHENG, et al. SCMA codebooks design for Rayleigh fading channel[J]. Journal on Communications, 2022, 43(4): 107-113. DOI： 10.11959/j.issn.1000-436x.2022064.

摘要

为了设计近似最优的稀疏码本，以多用户叠加星座点的误符号率性能为评价指标，分别针对上行、下行传输信道，设计了适用于瑞利衰落信道的近似最优稀疏码本。基于叠加星座点与误符号率的数学模型，提出了一种近似最优稀疏码本的设计方案，码本的设计步骤包括因子图矩阵的设计、码字对的匹配以及最优旋转角度的确定。仿真结果表明，所提码本设计方案能够达到近似最优的误符号率性能。

Abstract

According to the symbol error eate (SER) of the superimposed constellation

the near-optimal space code multiple access (SCMA) codebooks were explored under uplink and downlink Rayleigh fading channels

respectively.A near-optimal codebook design scheme was proposed based on the mathematical model between the superimposed constellation and the SER formula.And the proposed design procedures could be summarized as follows

design the factor graph matrix

match the best codeword pair

and find the optimal angle.Numerical results are provided to demonstrate that the proposed scheme can achieve near-optimal SER performance.

关键词

Keywords

references

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