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Monotonicity Results for Coherent MIMO Rician Channels
2005
IEEE Transactions on Information Theory
The dependence of the Gaussian input information rate on the line-of-sight (LOS) matrix in multiple-input multiple-output coherent Rician fading channels is explored. It is proved that the outage probability and the mutual information induced by a multivariate circularly symmetric Gaussian input with any covariance matrix are monotonic in the LOS matrix D, or more precisely, monotonic in D'D in the sense of the Loewner partial order. Conversely, it is also demonstrated that this ordering on the
doi:10.1109/tit.2005.858968
fatcat:2wcmz2sxjncubfxppkjpoznizi