In this book, we consider the design of practical distributed space-time codes and power efficient fading mitigation techniques for wireless relay networks. Furthermore, the performance analysis of the wireless relay networks under different protocols and fading channels are investigated. The formulas for the symbol error rate (SER), outage probability, and diversity order of the investigated schemes are presented in fading channels. Based on these SER expressions, power allocations are also introduced to further improve the performance of these systems. The proposed cooperative schemes are...