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The SIMO Pre-Log Can Be Larger Than the SISO Pre-Log (1004.3755v1)
Published 21 Apr 2010 in cs.IT and math.IT
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.