A Highly Efficient Generalized Teager-Kaiser-Based Technique for LOS Estimation in WCDMA Mobile Positioning | Zendy

Ridha Hamila | Zendy; A. Lakhzouri | Zendy; Elena Simona Lohan | Zendy; Markku Renfors | Zendy

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A Highly Efficient Generalized Teager-Kaiser-Based Technique for LOS Estimation in WCDMA Mobile Positioning

Author(s) -

Ridha Hamila,

A. Lakhzouri,

Elena Simona Lohan,

Markku Renfors

Publication year - 2005

Publication title -

eurasip journal on advances in signal processing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.317

H-Index - 88

eISSN - 1687-6180

pISSN - 1687-6172

DOI - 10.1155/asp.2005.698

Subject(s) - computer science , multipath propagation , delay spread , bandlimiting , bandwidth (computing) , deconvolution , multipath mitigation , algorithm , electronic engineering , telecommunications , mathematics , engineering , mathematical analysis , channel (broadcasting) , fourier transform

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.

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