A multipath resistant PN code tracking algorithm

Mohamed El-Tarhuni, Ali Ghrayeb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Multipath propagation is a major source of degradation in the performance of conventional PN code tracking loops. The mean-square tracking error of a conventional delay-locked loop (DLL) exhibits an irreducible floor due to the presence of closely spaced multipath components. In this paper, we present a new PN code tracking algorithm that does not suffer from the presence of multipath components. This algorithm utilizes a finite impulse response (FIR) adaptive filter to mitigate the effect of multipath on delay estimation. It is shown that the tap-weight vector of the adaptive filter can he used to provide accurate estimation of the multipath delays. It is also shown that the mean-squared tracking error of the proposed scheme is not affected by paths that are very close (within 1 to 2 chips apart). The effect of terminal mobility is also investigated by simulating the performance under frequency selective fading channel conditions with different Doppler frequencies. The proposed scheme is well suited for wideband CDMA systems where a large number of closely spaced multipath components need to be tracked and used in rake combining.

Original languageEnglish
Title of host publication13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002
Pages1834-1838
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2002
Event13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002 - Lisboa, Portugal
Duration: 15 Sep 200218 Sep 2002

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume4

Other

Other13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002
CountryPortugal
CityLisboa
Period15/9/0218/9/02

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Keywords

  • Adaptive filters
  • Code acquisition
  • Multipath fading
  • PN code tracking
  • Spread spectrum communication

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

El-Tarhuni, M., & Ghrayeb, A. (2002). A multipath resistant PN code tracking algorithm. In 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002 (pp. 1834-1838). [1045496] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 4). https://doi.org/10.1109/PIMRC.2002.1045496