Optimum transmission strategy for MIMO systems

In this paper, a new transmission strategy is introduced, as described by the covariance matrix of transmitted signals, which realizes an upper bound for the capacity of a Multiple Input Multiple Output (MIMO) system operating in a Rician propagation environment. It is shown that in order to realize the upper bound capacity the transmitter has to have the knowledge of the Rice factor and the signal to noise ratio in addition to the receiver having full information of the channel. Analytical and simulation results are presented showing that the proposed transmission scheme outperforms the other schemes, which were reported earlier in the literature.