NDLI: A Computationally Efficient Block Transmission Scheme Based on Approximated Cholesky Factors

Content Provider	IEEE Xplore Digital Library
Author	Sinn, C.V. Bielefeld, D. Gotze, J.
Copyright Year	2007
Description	Author affiliation: Telecommun. Lab., Sydney Univ., NSW (Sinn, C.V.)
Abstract	Least square and minimum mean square error data estimation based on rectangular and circulant channel submatrices is compared in terms of estimation quality, storage requirements and the number of multiplications. The circulant case is applied in OFDM based transmission systems. When applying an approximated Cholesky decomposition, the computation of the estimator in the rectangular case may require even less computations than in the circulant case, while yielding better bit error rates in a time dispersive wireless transmission scenario. The considered approximations may improve the condition of the estimator and thus may even yield lower bit error rates than the exact estimator. The actual computation of the estimates is usually more efficient in the circulant case than in the rectangular.
Starting Page	1786
Ending Page	1790
File Size	140416
Page Count	5
File Format	PDF
ISBN	1424402662
ISSN	15502252
DOI	10.1109/VETECS.2007.371
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-22
Publisher Place	Ireland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Least squares approximation OFDM Bit error rate Yield estimation Dispersion Interference Laboratories Mean square error methods Estimation error Wireless communication
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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