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Adaptive equalization of multiple-input multiple-output (MIMO) channels

Maleki-Tehrani, Ardavan and Hassibi, Babak and Cioffi, John M. (2000) Adaptive equalization of multiple-input multiple-output (MIMO) channels. In: 2000 IEEE International Conference on Communications ICC 2000. Vol.3. IEEE , Piscataway, NJ, pp. 1670-1674. ISBN 0-7803-6283-7. https://resolver.caltech.edu/CaltechAUTHORS:20150213-074719604

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Abstract

The paper proposes and investigates a new approach to adaptive spatio-temporal equalization for MIMO (multiple-input multiple-output) channels. A system with n transmit and m (m≥n) receiver antennas is assumed. A decision Feedback equalizer is considered. A least squares solution is first formulated, based on which a recursive solution using Riccati recursions is proposed. The proposed solution is tested by simulating the MIMO system. It is shown that the adaptive solution achieves the same performance as the optimum least squares solution. The effect of the nondiagonal channel elements (acting as interference) on the system performance is also studied. It has been shown that in order to achieve better performance, the interference from nondiagonal channel elements needs to be minimized. This can be done by using orthogonal transmission. Moreover the proposed solution do not require channel identification and will also enable equalizer adaptation to channel changes.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/ICC.2000.853778DOIArticle
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=853778PublisherArticle
Additional Information:© 2000 IEEE. Research supported in part by NSF and SK Telecom.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
SK TelecomUNSPECIFIED
Record Number:CaltechAUTHORS:20150213-074719604
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150213-074719604
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54814
Collection:CaltechAUTHORS
Deposited By: Shirley Slattery
Deposited On:18 Feb 2015 23:57
Last Modified:03 Oct 2019 08:00

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