Title: MIMO Block-Fading Channels With Mismatched CSI
Authors: Asyhari, A. Taufiq
Guillen i Fabregas, Albert
友訊交大聯合研發中心
D Link NCTU Joint Res Ctr
Keywords: Block fading;diversity;generalized mutual information;imperfect channel state information;MIMO;mismatched decoding;multiple antenna;nearest neighbor decoding;outage probability;outage exponent;power adaptation
Issue Date: 1-Nov-2014
Abstract: We study transmission over multiple-input multiple-output block-fading channels with imperfect channel state information (CSI) at both the transmitter and receiver. In particular, based on mismatched decoding theory for a fixed channel realization, we investigate the largest achievable rates with independent and identically distributed inputs and the 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 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.
URI: http://dx.doi.org/10.1109/TIT.2014.2357016
http://hdl.handle.net/11536/123946
ISSN: 0018-9448
DOI: 10.1109/TIT.2014.2357016
Journal: IEEE TRANSACTIONS ON INFORMATION THEORY
Volume: 60
Issue: 11
Begin Page: 7166
End Page: 7185
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