Abstract:

The symbol error rate (SER) performance is analyzed for the optimization of amplifyandforward multinode cooperative communication systems. Firstly, theory SER is analyzed for the systems. Then, the corresponding low bound (LB) is derived, that will be nearing the theory SER between both low and high signaltonoise ratio conditions. Finally, algorithms used in optimal power allocation (OPA) and partnership selection for the systems by exploring the LB as cost function are formulated. Theoretical analysis and simulation results show that the OPA outperforms traditional equal power allocation in SER performance. Moreover, the LB will be more nearing the theory SER than existing algorithms especially under low SNR conditions.

Key words: cooperation communication, optimal power allocation, partnership selection, symbol error rate, low bound