WCDMA移动通信中多径信道估计与RAKE接收研究

For multipath fading characteristics of wireless propagation,.efficient path delay estimation, fading coefficents estimation and.multipath interference cancelation are investigated. A fading channel.estimation method is proposed based on pilot and polymonial model, with.good performance in high mobile speed conditions. Adopting the dynamic.channel model recommended by 3GPP, it is investigated the impacts of path.delay hop and delay estimation method parameters on the accuracy of delay.estimates and on the link performance. A multipath interference.cancellation algorithm is proposed and the RAKE receiver structure is.modified. It is also tested the application and behavior of the above.methods in WCDMA link with power control, in WCDMA link with multiple.anttenas, and in cdma2000.

针对无线信道的多径特性,研究有效的信道(延迟和复振幅)估计方法和用于宽带码分多址系车腞AKE接收机结构.对进行扰码,多径传播后含有信道响应信息的导频难以分离的难题,采用独特的技术方案,算法结构和匹配滤波器设计.研究成果可直接用于第三代移动通信的主要候选系统WCDMA/ARIB,对其它宽带码分多址系统亦具学术价值..