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In this paper, the authors investigate the performance of dual-hop amplify-and-forward multiple-input multiple-output relaying system with orthogonal space-time block code transmissions over doubly-correlated Nakagami-m fading channel, where the source, relay, and destination terminals are all equipped with multiple antennas. For two different CSI-assisted relaying schemes, which could be encompassed by a unified model, they provide the compact closed-form expressions for cumulative distribution function, probability density function, moment generating function, and Generalized Moment (GM) of the instantaneous end-to-end SNR. Besides, the exact analytical expressions for the Outage Probability (OP) and Symbol Error Rate (SER) and approximate expression for ergodic capacity are also derived.
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