Source and Relay Precoding Design for Dual-hop Multiuser Network

A linear processing is proposed for relay assisted multiuser network operating in half duplex mode. The network is consisted of source, relay and various users. In this setup source, relay and multiple users are fixed with multiple antennas. The users are getting information signal through the relay node. The information transmission between source to the users is taken place through an amplify-and-forward relaying protocol. The relay node broadcasts the information signal received from the source to the user nodes. In first hop from source to relay singular value decomposition (SVD) beamforming is applied at the source and receive side of the relay, whereas, using Fukunaga Koontz Transform for relay transmit precoding design to control leakage interference within a single users and among multiple users. The effectiveness of the proposed dual-hop design is demonstrated by conducting comprehensive simulations.