We study the performance limits of a radio system consisting of a transmitter with t antennas and a receiver with r antennas over a block-fading additive white Gaussian noise channel. We derive the optimal coding scheme minimizing the information outage probability and analyze its performance in terms of outage probability and delay-limited capacity. We show that, asymptotically, the delay-limited capacity grows linearly and is almost independent of the number of fading blocks M which implies the existence of a trade-off between spatial (multiple antennas) and time diversity (interleaving).
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