University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Acquisition of Orthogonal Modulated Signals in Rayleigh-Fading Channels

Xiao, P and Strom, E (2002) Acquisition of Orthogonal Modulated Signals in Rayleigh-Fading Channels In: European Wireless, 2002-02-25 - 2002-02-28, Florence Italy.

[img]
Preview
PDF
EW_1022.PDF
Available under License : See the attached licence file.

Download (116kB)
[img]
Preview
PDF (licence)
SRI_deposit_agreement.pdf

Download (33kB)

Abstract

The problem of estimating propagation delays of the orthogonal modulated signals in asynchronous DS-CDMA system over fading channels is treated in this paper. The system under study resembles the uplink of an IS-95 system. The channel is assumed to be a time-varing flat Rayleigh-fading channel. The shortcoming of the sliding correlator as the standard method of code acquisition is examined and three robustified versions of delay estimators,namely whitened sliding correlator, subspace based delay estimator and MMSE based delay estimator are proposed to combat the multiple access interference (MAI) in the Rayleigh-fading channels. The performance of these estimators are compared with the computer simulations as a function of different parameters, e.g., the number of pilots, near-far resistance, signal to noise ratio,etc..

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
AuthorsEmailORCID
Xiao, PUNSPECIFIEDUNSPECIFIED
Strom, EUNSPECIFIEDUNSPECIFIED
Date : 25 February 2002
Depositing User : Symplectic Elements
Date Deposited : 15 Nov 2013 13:32
Last Modified : 09 Jun 2014 13:11
URI: http://epubs.surrey.ac.uk/id/eprint/798999

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800