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Generalized Subspace-based Algorithms For Blind Channel Estimation In Cyclic Prefix Systems

Su, Borching and Vaidyanathan, P. P. (2006) Generalized Subspace-based Algorithms For Blind Channel Estimation In Cyclic Prefix Systems. In: 40th Asilomar Conference on Signals, Systems and Computers. IEEE , New York, pp. 1796-1800. ISBN 1-4244-0784-2. https://resolver.caltech.edu/CaltechAUTHORS:20110810-160027488

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Abstract

In this paper a novel generalization of subspace- based blind channel identification methods in cyclic prefix (CP) systems is proposed. For the generalization, a new system parameter called repetition index is introduced whose value is unity for previously reported special cases. By choosing a repetition index larger than unity, the number of received blocks needed for blind identification is significantly reduced compared to all previously reported methods. This feature makes it more realistic especially in wireless environments where the channel state is usually fast-varying. Given the number of received blocks available, the minimum value of repetition index is derived. Theoretical limit allows the proposed method to perform blind identification using only three received blocks. Simulation results not only demonstrate the capability of the algorithm to perform blind identification using fewer received blocks, but also show that in some cases system performance can be improved by choosing a repetition index larger than needed. If the number of received blocks and the repetition index are optimally chosen, the proposed method outperforms previously reported special cases, especially in time-varying channel environments.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/ACSSC.2006.355071DOIUNSPECIFIED
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4176881PublisherUNSPECIFIED
ORCID:
AuthorORCID
Vaidyanathan, P. P.0000-0003-3003-7042
Additional Information:© 2006 IEEE. Issue Date: Oct. 29 2006-Nov. 1 2006; Date of Current Version: 07 May 2007. Work supported in parts by the NSF grant CCF-0428326 and the Moore Fellowship of the California Institute of Technology.
Funders:
Funding AgencyGrant Number
NSFCCF-0428326
Caltech Moore FellowshipUNSPECIFIED
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INSPEC Accession Number10288586
Record Number:CaltechAUTHORS:20110810-160027488
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110810-160027488
Official Citation:Borching Su; Vaidyanathan, P.P.; , "Generalized Subspace-based Algorithms For Blind Channel Estimation In Cyclic Prefix Systems," Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on , vol., no., pp.1796-1800, Oct. 29 2006-Nov. 1 2006 doi: 10.1109/ACSSC.2006.355071
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24795
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:11 Aug 2011 14:37
Last Modified:09 Mar 2020 13:19

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