elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Decoupled Delay and Doppler Acquisition in DS-CDMA Systems at Low Signal to Noise Ratios

Groh, Ingmar and Sand, Stephan (2011) Decoupled Delay and Doppler Acquisition in DS-CDMA Systems at Low Signal to Noise Ratios. ICl GNSS 2011, Tampere, Finnland.

Full text not available from this repository.

Abstract

This paper presents several novel acquisition algorithms for time-variant multipath channels. To acquire several closely-spaced multipath channel delays and multipath Doppler frequencies, our novel acquisition methods resort to low complexity high resolution subspace estimators. The low complexity high resolution subspace estimators perform a coherent estimation of the sample covariance matrix, which prevents the squaring loss (SL) and a reduced acquisition probability due to rapidly alternating modulation symbols. We use the multiple signal classification (MUSIC) and the unitary estimation of signal parameters via rotational invariant techniques (ESPRIT) method for the two-dimensional delay and Doppler multipath acquisition. Contrary to MUSIC, unitary ESPRIT enables the first decoupled acquisition of multipath channel delays and Doppler frequencies, which yields a high acquisition probability at low signal to noise ratios (SNRs) with a low acquisition complexity.

Item URL in elib:https://elib.dlr.de/70500/
Document Type:Conference or Workshop Item (Speech)
Title:Decoupled Delay and Doppler Acquisition in DS-CDMA Systems at Low Signal to Noise Ratios
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Groh, IngmarIngmar.Groh (at) dlr.deUNSPECIFIED
Sand, StephanStephan.Sand (at) dlr.deUNSPECIFIED
Date:June 2011
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:squaring loss, multipath channel acquisition, multiple signal classification, estimation of signal parameters via rotational invariant techniques
Event Title:ICl GNSS 2011
Event Location:Tampere, Finnland
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Groh, Ingmar
Deposited On:22 Jul 2011 09:15
Last Modified:22 Jul 2011 09:15

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.