首页>
外国专利>
METHOD AND SYSTEM FOR MULTI-USER CHANNEL ESTIMATION IN DS-CDMA SYSTEMS
METHOD AND SYSTEM FOR MULTI-USER CHANNEL ESTIMATION IN DS-CDMA SYSTEMS
展开▼
机译:DS-CDMA系统中多用户信道估计的方法和系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
The method and system for multi-user channel estimation in a multi-access network comprises: providing a communication signal (ri) providing an estimated communication signal Formula (I) generated using a spreading code signal (Ci), an information sequence signal (Bi) and a predicted composite channel impulse response signal Formula (II); comparing the communication signal (ri) to the estimated communication signal Formula (I) to provide an error signal (ϵi); and generating an estimated composite channel impulse response signal Formula (III) using the error signal (ϵi), the spreading code signal (Ci) and the information sequence signal (Bi); the predicted composite channel impulse response signal Formula (II) providing the multi-user channel estimation. The proposed method, which is based on a LMS like algorithm, is an efficient and low complexity method allowing estimating and tracking even fast times varying multi-path channels. Instantaneously, the composite channel impulse response is computed and estimates of all possible path energies are computed to be used as an indicator of the significant paths (delays).
展开▼