General Capacity Bounds for Spatially Correlated Rician MIMO Channels

M.R. McKay, I.B. Collings
2005 IEEE Transactions on Information Theory  
This paper considers the capacity of spatially correlated Rician multiple-input multiple-output (MIMO) channels. We consider the general case with double-sided correlation and arbitrary rank channel means. We derive tight upper and lower bounds on the ergodic capacity. In the particular cases when the number of transmit and receive antennas are equal, or when the correlation is single sided, we derive more specific bounds which are computationally efficient. The bounds are shown to reduce to
more » ... wn results in cases of independent and identically distributed (i.i.d.) and correlated Rayleigh MIMO channels. We also analyze the outage characteristics of the correlated Rician MIMO channels at high signal-to-noise ratio (SNR). We derive the mean and variance of the mutual information and show that it is well approximated by a Gaussian distribution. Finally, we present numerical results which show the effect of the antenna configuration, correlation level (angle spreads), Rician -factor, and the geometry of the dominant Rician paths. Index Terms-Capacity, multiple-input multiple-output (MIMO), Rician, spatial fading correlation.
doi:10.1109/tit.2005.853325 fatcat:z6oofa2jljakzl2dnubk6yg6v4