The Air-Ground Integrated MIMO Cooperative Relay Beamforming Wireless Ad-Hoc Network Technology Research That Based on Maximum Ratio Combining

Research on multi-antenna system gain cooperative communication and multiple-input multiple-output (MIMO) systems in modern wireless communication networks, the noise introduced by each of the multiple wireless ad-hoc network relay nodes and the signal from the interference source received by the relay node and the sink node affect the signal to noise ratio of the system, an integrated relay-and-forward amplifying base station platform for air-ground integration and a more realistic method for solving air-ground relay beamforming vectors based on the convexity optimization method are proposed, and the sink node uses maximum ratio combining (MRC) diversity for signal reception. The simulation results show that the wireless ad-hoc network relay node under the air-ground combination is in the relay cooperative forwarding and amplifying beamforming vector design. When the correlated interference noise is introduced, the final sink node receives the corresponding covariance matrix. The optimal beamforming signal in the network transmission bit error rate (BER) decreases significantly as the signal-to-noise ratio (SNR) increases; The experiment results showed that very intuitive and significant to extend the communication distance of wireless ad-hoc network nodes.