DocumentCode :
2335631
Title :
A Novel Pilot Aided Time of Arrival (TOA) Estimation Algorithm for Vehicular OFDM Systems in Specular Wireless Channels
Author :
Prabhu, Vinay Uday ; Jalihal, Devendra
Author_Institution :
Dept. Of Electr. Eng., Indian Inst. Of Tecfmology, Chennai
fYear :
2008
fDate :
Nov. 30 2008-Dec. 4 2008
Firstpage :
1
Lastpage :
5
Abstract :
Channel estimation is vital for implementing schemes such as coherent detection and adaptive bit loading, which make OFDM an attractive PHY layer technology for vehicular wireless communications. However, knowledge of the exact time of arrival (TOA) information of the multi-path components of the vehicular wireless channel is required to achieve efficient channel estimation. Super-resolution algorithms which use embedded pilot information, such as ESPRIT and MUSIC have been used to estimate this information in the case of sparse multi-path channels. In this paper, we propose a new efficient algorithm based on the matrix pencil method which uses averaged covariance matrices and requires just a single eigen value finding routine to yield the TOA values.
Keywords :
channel estimation; covariance matrices; eigenvalues and eigenfunctions; mobile radio; multipath channels; time-of-arrival estimation; wireless channels; ESPRIT; MUSIC; adaptive bit loading; channel estimation; coherent detection; covariance matrices; eigen value finding routine; matrix pencil method; sparse multipath channel; specular wireless channels; super-resolution algorithm; time of arrival estimation algorithm; vehicular OFDM system; vehicular wireless communication; Channel estimation; Covariance matrix; Direction of arrival estimation; Frequency domain analysis; Linear antenna arrays; OFDM; Physical layer; Signal resolution; Wireless communication; Yield estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
GLOBECOM Workshops, 2008 IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-3061-1
Electronic_ISBN :
978-1-4244-3062-8
Type :
conf
DOI :
10.1109/GLOCOMW.2008.ECP.58
Filename :
4746643
Link To Document :
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