高速无线局域网MIMO技术的研究

Research MIMO techniques in high speed wireless local area network

MIMO技术能够在空间中产生独立的并行信道同时传输多路数据流。多天线接收机利用先进的空时编码处理,能够分开并解码这些数据流,同时采用了正交频分复用(OFDM)技术,在不增加带宽的情况下成倍地提高通信系统的容量和频谱利用率,有效地提高了系统的传输速率。高速无线局域网采用MIMO技术,在一定程度上解决了带宽效率和多径衰落问题。通过对MIMO技术的深入研究,找出与MIMO技术有关的因素,提出了更好的使用MIMO技术方法。

MIMO techniques can produce separate parallel channels in space and transmit multi-channel data flowing at the same time.Multi-antenna receiver using advanced space-time coding processing can separate and decode the data flowing, meanwhile, using Orthogonal Frequency Division Multiplexing （OFDM） Technology to double the capacity of communication system and utilization of the spectrum without increasing bandwidth, effectively to improve the system＇s transmission rate. High-speed wireless local area network uses MIMO technology to a certain extent, solve the problem of bandwidth efficiency and multipaths fading problem. Based on MIMO technology in-depth research ,this paper finds MIMO technology-related factors and provide a better method to use MIMO technology.