  This paper analyzes MIMO systems with multichannel beamforming in Ricean
fading. Our results apply to a wide class of multichannel systems which
transmit on the eigenmodes of the MIMO channel. We first present new
closed-form expressions for the marginal ordered eigenvalue distributions of
complex noncentral Wishart matrices. These are used to characterize the
statistics of the signal to noise ratio (SNR) on each eigenmode. Based on this,
we present exact symbol error rate (SER) expressions. We also derive
closed-form expressions for the diversity order, array gain, and outage
probability. We show that the global SER performance is dominated by the
subchannel corresponding to the minimum channel singular value. We also show
that, at low outage levels, the outage probability varies inversely with the
Ricean K-factor for cases where transmission is only on the most dominant
subchannel (i.e. a singlechannel beamforming system). Numerical results are
presented to validate the theoretical analysis.
