强大的低复杂性WMMSE预编码在不完美的CSI下,每天线功率限制.
Zijiao Guo1, Vaskar Sen1, Honggui Deng1
1School of Electronic Information, Central South University, Changsha 410004, China.
Sensors (Basel, Switzerland)
|January 10, 2026
概括
本研究介绍了一个强大的,低复杂度的预编码框架 (RLC-WMMSE) 对于大规模的多用户MIMO系统. 它显著降低了计算成本,同时确保满足每天线功率限制,提高未来无线网络的效率.
科学领域:
- 无线通信系统无线通信系统
- 信号处理 信号处理
- 优化算法的优化算法
背景情况:
- 在大规模多用户MIMO (MU-MIMO) 中加权总和率 (WSR) 最大化是计算密集的.
- 现有的加权最小平均平方误差 (WMMSE) 算法面临基站天线的立方缩放复杂性.
- 每个天线功率限制 (PAPC) 和不完美的通道状态信息 (CSI) 增加了重大挑战.
研究的目的:
- 开发一个强大的,低复杂性的基于WMMSE的预编码框架 (RLC-WMMSE),用于大规模的MU-MIMO下链.
- 为了有效地解决 PAPC 和随机 CSI 的不匹配.
- 在大型系统中减少WMMSE算法的计算负担.
主要方法:
- 纳入对角双重规范化方案用于PAPC的执法.
- 利用基于Woodbury的传输更新来减少矩阵反转的复杂性.
- 实施混合开关机制,具有适应性缓功能,以提高强度.
主要成果:
- RLC-WMMSE实现了与基准设计可比的WSR性能.
- 与传统方法相比,实现了大量的运行时间节省.
- 在各种通道条件下,每个天线的功率限制都被严格满足.
结论:
- 对于大规模的MU-MIMO预编码,RLC-WMMSE提供了一个实用且可扩展的解决方案.
- 该框架有效地平衡了性能,复杂性和功率限制.
- 它非常适合未来的无线传感器和通信网络.
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