Skip to main content

Channel Tracking Using Particle Filtering in Unresolvable Multipath Environments


We propose a new timing error detector for timing tracking loops inside the Rake receiver in spread spectrum systems. Based on a particle filter, this timing error detector jointly tracks the delays of each path of the frequency-selective channels. Instead of using a conventional channel estimator, we have introduced a joint time delay and channel estimator with almost no additional computational complexity. The proposed scheme avoids the drawback of the classical early-late gate detector which is not able to separate closely spaced paths. Simulation results show that the proposed detectors outperform the conventional early-late gate detector in indoor scenarios.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Tanya Bertozzi.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bertozzi, T., Le Ruyet, D., Panazio, C. et al. Channel Tracking Using Particle Filtering in Unresolvable Multipath Environments. EURASIP J. Adv. Signal Process. 2004, 705208 (2004).

Download citation

  • Received:

  • Revised:

  • Published:

  • DOI:

Keywords and phrases