The SIMO pre-log can be larger than the SISO pre-log

Authors

Veniamin I. Morgenshtern, Giuseppe Durisi, and Helmut Bölcskei

Reference

Proc. of IEEE International Symposium on Information Theory (ISIT), Austin, TX, pp. 320-324, June 2010

DOI: 10.1109/ISIT.2009.5205806

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Abstract

We establish a lower bound on the noncoherent capacity pre-log of a temporally correlated Rayleigh block-fading single-input multiple-output (SIMO) channel. Surprisingly, when the covariance matrix of the channel satisfies a certain technical condition related to the cardinality of its smallest set of linearly dependent rows, this lower bound reveals that the capacity pre-log in the SIMO case is larger than that in the single-input single-output (SISO) case.

Keywords

Fading channels, single-input multiple-output (SIMO), capacity pre-log


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