Keywords
CDMA
Rayleigh Channel
RAKE receiver
How to Cite
Abstract
This paper presents a model used for the study of the parameters of interest to modify the accuracy in estimating the Time of Arrival (TOA) of the signal emitted by a mobile subscriber operating in a Code Division Multiple Access system (CDMA) that uses a RAKE receiver as part of their operation. This model fits systems such as IS-95, CDMA 2000 or WCDMA, to propagate signals in Rayleigh condition. This work shows the performance of the receiver based on the number of channel estimates available, the number of sensors that comprise the antenna array and the type of signal source when sampling rate is higher than chip rate. The received signal is modeled from stochastic distributions, and both cases are considered partially coherent distributed sources, such as cases of completely coherent sources and completely inconsistent sources
References
Játiva, R.; Vidal, J. 2003. "La Cota Inferior de Cramer-Rao en la Estimación del Instante de Llegada al usar Modelos de Fuente Distribuida". Revista CIENCIA Vol.6, N.2, 185-196.
Pedersen, K. 2000. "Antenna Arrays in Mobile Communications - Channel Modeling and Receiver Design for DS-CDMA Systems", Tesis Doctoral de la Universidad de Aalborg.
Kay, S. 1993. Fundamentals of Statistical Signal Processing - Estimation Theory. New Jersey: Prentice Hall.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2009 René P. Játiva E., Josep Vidal M.