Science and Development Network (SciDev.Net)
Recently, cooperative communications have been proposed that allows single antenna system in a multi user environment to share their antennas. And cooperative communications make a virtual multiple antenna transmitters that can achieve transmit diversity. But cooperative communications reduce transmission rate because the relay can retransmit the received signals from the source. In this paper, new technique is proposed for high transmission rate based on Decode-and-Forward (DF) protocol. This technique adversely affects the Bit Error Rate (BER) performance. But because transmission rate is increased, the throughput is increased.