IEEE Transactions on Wireless Communications
A cross-layer approach to energy efficiency for adaptive MIMO systems exploiting spare capacity
IEEE Transactions on Wireless Communications
On physically-based normalization of MIMO channel matrices
IEEE Transactions on Wireless Communications
EUC'07 Proceedings of the 2007 international conference on Embedded and ubiquitous computing
How does correlation affect the capacity of MIMO systems with rate constraints?
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Finite-SNR diversity-multiplexing tradeoff via asymptotic analysis of large MIMO systems
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
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Closed form approximations of the outage capacity and the mutual information between the in- and outputs of a multi-input, multi-output (MIMO) narrowband system in the presence of correlated fading are considered. First, the limiting distribution of the squared singular values of the channel matrix is derived as the number of antennas at either the transmit or receive site increases. Spatial correlation is allowed according to a realistic stochastic channel model and correlation is allowed between the transmitted signals. The derived limiting distribution has the advantage of being closed form while simulations indicate that it provides a reasonable approximation of the true distribution also for realistic antenna array sizes. Second, the channel outage capacity is derived from the limiting distribution above for the case when the number of transmit antennas is large. The resulting outage capacity has a simple form and allows for spatially correlated channel elements as well as correlation among the transmitted signals. Results from simulations and channel measurements are presented that indicate that the derived expression provides an accurate approximation of the true channel outage capacity for a wide range of realistic system conditions.