合作下行链接SCMA系统的联合代解码设计
Hao Cheng1,2, Min Zhang1, Ruoyu Su1
1School of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
Entropy (Basel, Switzerland)
|July 29, 2025
概括
本研究介绍了一种合作下链Sparse Code Multiple Access (SCMA) 系统,以提高手机边缘用户的可靠性. 拟议的联合代解码显著提高了非合作性SCMA的性能.
科学领域:
- 无线通信无线通信
- 信号处理 信号处理
背景情况:
- 简单的代码多重接入 (SCMA) 为未来的网络提供高频谱效率和大规模的连接.
- 在SCMA系统中,细胞边缘用户由于信号减弱而面临性能下降.
研究的目的:
- 提出一个合作的下行链接SCMA系统,以提高细胞边缘用户的传输可靠性.
- 解决合作下链SCMA系统中多用户检测的悬而未决的问题.
主要方法:
- 开发一个共同的代解码设计,利用直接和继电传输的因子图.
- 关闭形式比特错误率 (BER) 性能分析的推导.
主要成果:
- 拟议的合作下游链路SCMA系统与非合作系统相比,表现优越.
- 联合代解码有效地管理多用户检测挑战.
结论:
- 合作策略显著提高了SCMA的性能,特别是在细胞边缘的用户.
- 开发的代解码方法为合作SCMA网络提供了强大的解决方案.
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