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MIMO block-fading channels with mismatched CSI

Asyhari, A.Taufiq
Guillen i Fabregas, A.
Publication Date
2014-09-10
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© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Full-text reproduced in accordance with the publisher’s self-archiving policy.
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2014-08-23
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Abstract
We study transmission over multiple-input multiple-output (MIMO) block-fading channels with imperfect channel state information (CSI) at both the transmitter and receiver. Specifically, based on mismatched decoding theory for a fixed channel realization, we investigate the largest achievable rates with independent and identically distributed inputs and a nearest neighbor decoder. We then study the corresponding information outage probability in the high signal-to-noise ratio (SNR) regime and analyze the interplay between estimation error variances at the transmitter and at the receiver to determine the optimal outage exponent, defined as the high-SNR slope of the outage probability plotted in a logarithmic-logarithmic scale against the SNR. We demonstrate that despite operating with imperfect CSI, power adaptation can offer substantial gains in terms of outage exponent.
Version
Accepted manuscript
Citation
Asyhari AT and Guillen i Fabregas A (2014) MIMO block-fading channels with mismatched CSI. IEEE Transactions on Information Theory. 60(11): 7166-7185.
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Type
Conference paper
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