毫米波无线通信:从短距离接入到广域覆盖

摘要

Thanks to abundant spectral resource,millimeter wave (mmWave) communications have become an important research area.Though mmWave communications have achieved great progresses in WLAN,it faces huge challenges in realizing wide ultra-high throughput area coverage.The paper provides a comprehensive survey on mmWave channel measurement and modeling,multiple input and multiple output (MIMO) technology and network framework,and proposes a new densely distributed mmWave massive MIMO system by incorporating new technologies such as large-scale cooperative transmission,cloud computing and distributed storage,which is expected to realize ultra-high throughput wide coverage and support middle-high mobility in mmWave communications.%由于丰富的频谱资源,毫米波通信已成为未来无线网络的重要研究方向.毫米波通信在短距离无线接入虽已取得明显进展,但如何实现超高速广域覆盖还存在巨大的挑战.本文回顾分析了毫米波信道模型、毫米波多天线传输和毫米波通信网络构架等关键技术的国内外研究现状和发展趋势,提出将毫米波无线通信与新兴的大规模多天线和大规模协作无线传输技术紧密结合,并引入云计算和分布式存储处理等新方法,形成密集分布毫米波大规模多天线无线通信新型网络构架,解决毫米波移动通信的广域大容量无线覆盖和支持终端中高速移动等关键性技术的瓶颈.