跨层流分配的mMIMO-OFDM混合波束形成视频通信
You-Ting Chen1, Shu-Ming Tseng1, Yung-Fang Chen2
1Department of Electronic Engineering, National Taipei University of Technology, Taipei 106, Taiwan.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
这项研究引入了一种新的跨层方案,用于毫米波 (mmWave) 系统的上链视频通信. 它通过最大限度地提高峰值信号噪声比率 (PSNR) 来优化视频质量,优于传统方法.
科学领域:
- 无线通信无线通信
- 信号处理 信号处理
- 视频传输 视频传输
背景情况:
- 毫米波 (mmWave) 和大规模MIMO技术对于高容量无线系统至关重要.
- 与下链场景相比,上链视频通信带来了独特的挑战.
- 现有的资源分配方案往往忽视了应用层质量指标和多流用户需求.
研究的目的:
- 为毫米波MU-mMIMO视频通信开发一个优化的上链传输方案.
- 通过直接最大化PSNR来提高视频质量,超越光谱效率.
- 通过考虑多数据流用户和上链优化来解决先前工作中的局限性.
主要方法:
- 一个跨层资源分配方案,集成物理层通道状态信息 (CSI) 和应用层速率扭曲 (RD) 功能.
- 一种新的代跨层动态数据流分配,从物理层分配开始并代地改进.
- 具有较低PSNR的用户对数据流进行动态争夺,以实现平衡的资源分配.
主要成果:
- 拟议的跨层方案实现了0.4至1.14 dB更高的PSNR,与4至6个用户的传统物理层方案相比.
- 该计划通过直接针对PSNR进行优化,证明了更好的视频质量.
- 观察到计算复杂度增加 (1.8-2.3x),平均有3.6-5.8次代.
结论:
- 开发的跨层方案有效地提高了毫米波MU-mMIMO系统中的上链视频质量.
- 代动态数据流分配可以改善资源分配和用户体验.
- 该框架提供了一种灵活的方法,可以适应各种物理层分配方法.
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