Space-time code in cooperative diversity wireless network

In this paper, the idea of space-time coding proposed for multiple-antenna system is applied to cooperative diversity wireless network. The pair error probability of the proposed scheme is analyzed and compared with the multiple antenna system. In the condition that the total transmit power is constant, the several power allocation schemes between the source and the relay nodes are given. The result indicates that wireless networks with R cooperative partners can achieve the same diversity as multiple antenna systems with R transmit antennas at asymptotically high transmit power when space-time codes are used distributive among the R cooperative partners.