Research Of MIMO Radio Channel Based On IEEE 802.11n

In order to supply more times data rates under limited spectrum in future mobile communication system many people consider other effective technologies which can utilize power and spectrum more efficiently as crucial technologies in Physical layer.The theory of Information proved that MIMO can greatly improve capacity of resisting fading and noise, and acquire very large capacity when correlation coefficient between different antennas is zero. in power limited wireless channel, MIMO is a diversity technology that can realize higher data rates, increase system capacity and improve the communication quality.In fact,the next generation WLAN which adopt MIMO-OFDM with different Space-Time technology will increase data rates and improve spectrum efficiency greatly on the condition of available communication.Because of very limited distance between antennas, there exists correlation between antennas. In order to measure more precisely link capacity and make the best of MIMO,MIMO channel modeling with correlation is very necessary.The research result shows that factors which influence correlation between antennas is the separation between antennas, AOA, AOD,AS, PAS, etc.The correlation between antennas has much effect on link level performance.In this paper, the author has analyzed the next generation WLAN MIMO radio channel model.This model described the spatial correlation between the paths in indoor MIMO channel,as well as fast fading and time dispersion,then tested the MIMO channel model and applyed it to Tgn sync project on different conditions of channel type,antenna spacing,antenna number,spatial stream number and Space-Time technolo-...