Abstract:

Directional antenna based multi-relays amplify-and-forward(AF) cooperative communication technology is studied. Firstly, the channel capacity and outage probability of three modes, which include without beamforming transmit receive(N-BF), beamforming transmit-without beamforming receive (T-BF) and beamforming transmit-beamforming receive (TR-BF), are theoretically derived. Secondly, the channel capacity and outage probability of different modes are respectively analyzed in detail combined with the specific numerical simulation. Finally, simulation shows that the TR-BF has the best optimal performance, the TR-BF and T-BF are less affected by noise than N-BF.