Optimal Amplify-and-Forward Relaying Schemesfor Two-hop MIMO Relay Networks

This paper proposes two relaying schemesfor the two-hop and half-duplex Amplify-and-forward (AF)distributed relaying system with one source, one destination,and multiple relays, each equipped with multiple antennas.The maximum transmission rate solution subjectto individual relay power constraint is investigated underan assumption of known Channel state information (CSI).Numerical simulations verifying the analytical results showthat an appropriate relaying processing can largely improvethe system spectral efficiency.