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为了克服接收机快速运动造成的深度衰落,将分形理论引入多径衰落信道的研究中,利用WCDMA中信道复用的特点,结合衰落信道具有服从Raleigh和Rice分布的特性,提出适用WCDMA信道的分形插值估计方法。通过仿真结果可知,与传统信道估计算法比较,在接收机不同运动速度下,尤其在高速运动时,信道参数估计的精度有所改善,满足WCDMA支持高速运动的特点。
In order to overcome the deep fading caused by fast receiver movement, the fractal theory is introduced into the study of multipath fading channels. Based on the characteristics of channel reuse in WCDMA and the characteristics of fading channels with Raleigh and Rice distribution, the fractal of WCDMA channels is proposed Interpolation estimation method. The simulation results show that compared with the traditional channel estimation algorithm, the accuracy of channel parameter estimation is improved at different receiver speed, especially at high speed, which satisfies the characteristics of WCDMA supporting high speed motion.