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

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

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 aremany linear and nonlinear techniques able to solve closely spacedmultipaths when the system...

EKF based LOS Estimation with Interference Cancellation for WCDMA Mobile Positioning

In WCDMA mobile phone positioning, one method to compute the terminal location in two dimensions is to use the Line-Of-Sight (LOS) distance between the mobile and at least three participating Base Stations (BSs). Correct estimation of the LOS delay will ensure correct estimation of the mobile position. However, delay estimation is still a challenging topic when the successive paths are spaced a...

An Efficient Method for GPS Multipath Mitigation Using the Teager-Kaiser-Operator-Based MEDLL

An efficient method for GPS multipath mitigation is proposed. The motivation for this proposed method is to integrate the Teager-Kaiser Operator (TKO) with the Multipath Estimating Delay Lock Loop (MEDLL) module to mitigate the GPS multipath efficiently. The general implementation process of the proposed method is that we first utilize the TKO to operate on the received signal’s Auto-Correlatio...

Extended Kalman Filter Channel Estimation for Line-of-Sight Detection in WCDMA Mobile Positioning

In mobile positioning, it is very important to estimate correctly the delay between the transmitter and the receiver. When the receiver is in line-of-sight (LOS) condition with the transmitter, the computation of the mobile position in two dimensions becomes straightforward. In this paper, the problem of LOS detection in WCDMA for mobile positioning is considered, together with joint estimation...

A Gsm Signals Based Positioning Technique for Mobile Applications