Distributed Space-Time-Frequency Cooperative Transmission Scheme for Bidirectional Multi-Relay Communication Networks

At present, the network topology in the field of cooperative communication, which is used to realize the data transmission, is becoming more and more perfect. However, the existing relay communication system is a half-duplex communication mode and works in the oneway transmission mode, although it improves the system's wireless performance, but at the expense of the spectral efficiency. In order to improve the spectrum utilization, Shannon had proposed two-way cooperative relay transmission mechanism in the 1960s. This mechanism needs only two slots to complete the bidirectional communication, which can improve the system spectrum utilization and network throughput in a large extent. Wireless bidirectional cooperative relay technology provides efficient data communication for the cellular mobile networks and wireless sensor networks