Outage probability and power allocation of directional multi-relays DF cooperative communication system
Mingyang Li · Electronic Design Engineering · 2013
Multi-relays DF cooperative communication system based on directional antenna is researched,outage probability is derived by applying cooperative domain and it is proved that opportunistic relay can gain the optimal Outage probability.The optimal power allocation factor range is also obtained by numerical simulation.Simulation results show that the number of relays which involved in the communication should be selected according the specific circumstance.On the condition that the number of relays is in the same amount and the total power is constrained,The scheme of opportunistic relay can get better outage probability and simplify the power allocation.Therefore,in the multi-relays DF directional cooperative communication system,the scheme with opportunistic relay could be adopted to achieve optimal system performance.