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On exact maximum-likelihood detection for non-coherent MIMO wireless systems: A branch-estimate-bound optimization framework

Xu, Weiyu and Stojnic, Mihailo and Hassibi, Babak (2008) On exact maximum-likelihood detection for non-coherent MIMO wireless systems: A branch-estimate-bound optimization framework. In: IEEE International Symposium on Information Theory, 2008. ISIT 2008. IEEE , Piscataway, NJ, pp. 2017-2021. ISBN 978-1-4244-2256-2 . https://resolver.caltech.edu/CaltechAUTHORS:20150224-074838545

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Abstract

Fast fading wireless environments pose a great challenge for achieving high spectral efficiency in next generation wireless systems. Joint maximum-likelihood (ML) channel estimation and signal detection is of great theoretical and practical interest, especially for multiple-input multiple-output(MIMO) systems where the multiple channel coefficients need to be estimated. However, this is a hard combinatorial optimization problem, for which obtaining efficient exact algorithms has been elusive for the general MIMO systems. In this paper, we propose an efficient branch-estimate-bound non-coherent optimization framework which provably achieves the exact ML joint channel estimation and data detection for general MIMO systems. Numerical results indicate that the exact joint ML method can achieve substantial performance improvements over suboptimal methods including iterative channel estimation and signal detection. We also derive analytical bounds on the computational complexity of the new exact joint ML method and show that its average complexity approaches a constant times the length of the coherence time, as the SNR approaches infinity.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/ISIT.2008.4595343DOIArticle
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4595343PublisherArticle
Additional Information:© 2008 IEEE. This work was supported in part by the National Science Foundation under grant no. CCR-0729203, by the David and Lucille Packard Foundation, and by Caltech’s Lee Center for Advanced Networking
Funders:
Funding AgencyGrant Number
NSFCCR-0729203
David and Lucille Packard FoundationUNSPECIFIED
Caltech’s Lee Center for Advanced NetworkingUNSPECIFIED
Record Number:CaltechAUTHORS:20150224-074838545
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150224-074838545
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55137
Collection:CaltechAUTHORS
Deposited By: Shirley Slattery
Deposited On:25 Feb 2015 00:31
Last Modified:03 Oct 2019 08:03

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