Optimum-Weighted RLS Channel Estimation for Rapid Fading MIMO Channels

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Optimum-Weighted RLS Channel Estimation for Rapid Fading MIMO Channels

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dc.contributor.author Koike-Akino, Toshiaki
dc.date.accessioned 2009-03-27T12:59:53Z
dc.date.issued 2008
dc.identifier.citation Toshiaki, Koike-Akino. 2008. Optimum-weighted RLS channel estimation for rapid fading MIMO channels. IEEE Transactions on Wireless Communications 7(11): 4248-4260. en
dc.identifier.issn 1536-1276 en
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:2748553
dc.description.abstract This paper investigates on an accurate channel estimation scheme for fast fading channels in multiple-input multiple-output (MIMO) mobile communications. A high-order exponential-weighted recursive least-squares (EW-RLS) method has been known as a good channel estimation scheme in rapid fading. however, there exists a drawback that we need to properly adjust the estimation order according to the channel environment. In this paper, we theoretically derive an optimum-weighted LS (OW-LS) channel estimation based on the statistical knowledge of the spatio-temporal channel correlation. Through the analysis, we reveal that the zero-th order polynomial becomes optimal when the optimum-weighting is employed. Furthermore, we propose an efficient recursive algorithm for channel tracking in oder to reduce the computational complexity. Since the proposed scheme automatically adapts the weighting coefficients to the channel condition, it has a significant advantage in mean-square error (MSE) performance compared to EW-RLS scheme. en
dc.description.sponsorship Engineering and Applied Sciences en
dc.language.iso en_US en
dc.publisher Institute of Electrical and Electronics Engineers en
dc.relation.isversionof http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=7693 en
dash.license OAP
dc.subject optimum-weighting en
dc.subject recursive algorithm en
dc.subject fast fading channel en
dc.subject multiple-input multiple output (MIMO) en
dc.subject weighted least-squares (LS) channel estimation en
dc.title Optimum-Weighted RLS Channel Estimation for Rapid Fading MIMO Channels en
dc.relation.journal IEEE Transactions on Wireless Communications en
dash.depositing.author Koike-Akino, Toshiaki

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  • FAS Scholarly Articles [7594]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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