宽带CDMA系统中最大多普勒频移估计方法的研究  

Study on the estimation methods of maximum doppler frequency in wideband CDMA system

作　　者：盛彬[1] 尤肖虎[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2004年第6期157-165,共9页Journal on Communications

摘　　要：估计最大多普勒频移或者是移动台的速度对于优化接收机的性能至关重要。本文主要研究了宽带码分多址通信系统中四种最大多普勒频移的估计方法并通过对WCDMA系统的理论计算和计算机仿真比较了它们在具有各向同性散射体和高斯噪声的瑞利信道中的性能差异。Estimation of the maximum Doppler spread or, equivalently, the speed of the mobile, is of an essential importance for the optimization of receiver algorithms. In this paper, four different estimation methods are investigated in wideband CDMA of the third generation mobile communication systems. and, the performance of these methods in the presence of Gaussian noise, nonisotropic scattering, Rayleigh fading are compared through theoretical analysis and simulation results in the particular case of a WCDMA systems.

关 键 词：宽带码分多址 最大多普勒频移 瑞利衰落信道 

分 类 号：TN929.533[电子电信—通信与信息系统]