Performance Analysis of Energy Harvesting Based Multi-source RA-coded Cooperative System

We investigate an energy harvesting based multi-source repeat-accumulate (RA) coded cooperative system. In particular, the relay is equipped with multiple antennas for information transmitting and energy harvesting. Firstly, the water-filling algorithm is adopted at the relay to allocate the harvested energy to multiple antennas. Secondly, the system employs RA coded and network coding. The outage probability and bit error rate (BER) of the system are analyzed. Simulation results show that the outage probability of the system adopting the water-filling algorithm outperforms that of the system adopting the optimal antenna selection algorithm or the equal power allocation algorithm. Furthermore, results also demonstrate that the performance of investigated system outperforms the corresponding point-to-point system under the same condition.