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Time-Variant Maximum Likelihood Channel Estimation in Mobile Radio Navigation Systems

Groh, Ingmar and Staudinger, Emanuel and Sand, Stephan (2011) Time-Variant Maximum Likelihood Channel Estimation in Mobile Radio Navigation Systems. 74th IEEE Vehicular Technology Conference (VTC-FAll), 2011-09-05 - 2011-09-08, San Francisco, CA, USA.

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Abstract

This paper presents a novel time-variant ML channel estimator for mobile radio navigation receivers. Our novel ML channel estimator enables the coherent noise averaging over several hundred codewords for time-variant channel phasors. Compared to the conventional incoherent summation of log-likelihood functions or compared to the conventional time-invariant log-likelihood functions, we avoid the squaring loss (SL) completely. The novel time-variant log-likelihood function compared to the conventional time-invariant log-likelihood function yields an SNR gain of up to 15 dB for an observation interval of 200ms. Additionally, since the novel time-invariant log-likelihood functions only require a Slepian subspace of a small dimension, the computational complexity of our novel time-variant ML channel estimation does not exceed the computational complexity of the conventional time-invariant ML channel estimation.

Item URL in elib:https://elib.dlr.de/69862/
Document Type:Conference or Workshop Item (Speech)
Title:Time-Variant Maximum Likelihood Channel Estimation in Mobile Radio Navigation Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Groh, IngmarUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Staudinger, EmanuelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sand, StephanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:2011
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:spread spectrum system, synchronization, maximum likelihood estimation, multipath mitigation
Event Title:74th IEEE Vehicular Technology Conference (VTC-FAll)
Event Location:San Francisco, CA, USA
Event Type:international Conference
Event Start Date:5 September 2011
Event End Date:8 September 2011
Organizer:IEEE Vehicular Technology Society
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: Sand, Dr Stephan
Deposited On:07 Oct 2011 09:26
Last Modified:24 Apr 2024 19:35

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