Signal-to-interference ratio estimation in CDMA systems

Mohamed Abou-Khousa*, Ali Ghrayeb, Mohamed El-Tarhuni

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

This paper is focused on estimating the signal-to-interference ratio (SIR) per multipath component in CDMA systems operating over frequency selective Rayleigh fading channels. A per-path SIR estimator is proposed and its performance is compared to the Cramer-Rao bound (CRB) derived for this problem. To account for the hardware limitations of the portable mobile terminals, a low complexity version of the estimator is introduced and incorporated in the receiver structure. Based on the per-path SIR estimates, a new Finger Assignment Algorithm (FAA) is proposed and compared to the conventional energy-based FAA. We show that the proposed FAA exhibits an improved multipath detection capability. Hence, more sophisticated multipath acquisition circuits can be realized based on the per-path SIR estimates.

Original languageEnglish
Title of host publicationCanadian Conference on Electrical and Computer Engineering; Technology Driving Innovation, 2004
Pages1333-1337
Number of pages5
DOIs
Publication statusPublished - 2004
Externally publishedYes
EventCanadian Conference on Electrical and Computer Engineering; Technology Driving Innovation, 2004 - Niagara Falls, Canada
Duration: 2 May 20045 May 2004

Publication series

NameCanadian Conference on Electrical and Computer Engineering
Volume3
ISSN (Print)0840-7789

Conference

ConferenceCanadian Conference on Electrical and Computer Engineering; Technology Driving Innovation, 2004
Country/TerritoryCanada
CityNiagara Falls
Period2/05/045/05/04

Keywords

  • CDMA
  • CRB bound
  • Finger assignment
  • RAKE receiver
  • SIR estimation

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