An Improved Wireless Communication System Using Relay for Signal Transmission

This paper proposes a cooperative communication scheme for improving wireless communication performance. By the distance of between transmitter and receiver, the signal from the transmitter is distorted for various reasons such as inter-cell interference (ICI), power reduction, incorrect channel estimation. In order to solve problems, the proposed scheme uses the relay. By the relay, the communication performance improves. Because the relay is located in between transmitter and receiver In this paper, the relay uses AF scheme for transmitting two signals at the same time.