Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Wideband CDMA For Third Generation Mobile Communications: Universal Personal Communications
Wideband CDMA For Third Generation Mobile Communications: Universal Personal Communications
Extended Kalman filter channel estimation for line-of-sight detection in WCDMA mobile positioning
EURASIP Journal on Applied Signal Processing
Deconvolution in the presence of Doppler with application tospecular multipath parameter estimation
IEEE Transactions on Signal Processing
An overview of the challenges and progress in meeting the E-911 requirement for location service
IEEE Communications Magazine
Overview of radiolocation in CDMA cellular systems
IEEE Communications Magazine
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Line-of-sight signal delay estimation is a crucial element for any mobile positioning system. Estimating correctly the delay of the first arriving path is a challenging topic in severe propagation environments, such as closely spaced multipaths in multiuser scenario. Previous studies showed that there are many linear and nonlinear techniques able to solve closely spaced multipaths when the system is not bandlimited. However, using root raised cosine (RRC) pulse shaping introduces additional errors in the delay estimation process compared to the case with rectangular pulse shaping due to the inherent bandwidth limitation. In this paper, we introduce a novel technique for asynchronous WCDMA multipath delay estimation based on deconvolution with a suitable pulse shape, followed by Teager-Kaiser operator. The deconvolution stage is employed to reduce the effect of the bandlimiting pulse shape.