In this paper we present a cooperative communication system employing maximum ratio transmission technique and its outage probability performance over Rayleigh fading channels. Since maximum ratio transmission can achieve full diversity when used at tranmitters having multiple antennas while requiring no complexity increase at the receiver the proposed system can be a preferable structure to be used both at the source and amplify-forward type relays of wireless networks to provide high speed and ...

In this paper we investigate the performance of an amplify-and-forward multi-input multi-output two way relay network where two sources are equipped with multiple antennas employing maximal ratio transmission and the communication is carried through the selected relay resulting in the largest received power. Assuming the fading channel coefficients are Nakagami-m distributed we derive the sum symbol error rate (SSER) outage probabilities for each user and the overall system. In addition diversity ...

In this paper a space-time turbo coded (STTC) orthogonal frequency division multiplexing (OFDM) system with QPSK signalling is explored when joint transmit and receive antenna selection is employed. Maximization of signal to noise ratio is used for antenna selection based on per-tone all-tone or hybrid selection criteria. Simulation results show that applying joint transmit/receive antenna selection techniques for STTC-OFDM systems can improve error rate performances considerably by achieving high ...