A Computationally Efficient Block Transmission Scheme Based on Approximated Cholesky Factors

Authors

C. V. Sinn, D. Bielefeld, J. Götze,

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.

BibTEX Reference Entry 

@inproceedings{SiBiGo07,
	author = {Christian Vincent Sinn and Daniel Bielefeld and J{\"u}rgen G{\"o}tze},
	title = "A Computationally Efficient Block Transmission Scheme Based on Approximated {C}holesky Factors",
	booktitle = "{IEEE} VTC Spring 2007",
	address = {Dublin},
	year = 2007,
	}

Downloads

 Download paper  Download bibtex-file

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights there in are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.