Study on Power Allocation for Multi-relay AF Cooperative System
LI Li-xin · Information Security and Communications Privacy · 2011
Power allocation is a study hotspot of cooperative communication.The paper analyzes the system model of multi-relay cooperative system based on orthogonal channel with AF protocol and derives the outage probability of the system.With minimal outage probability as the goal,it gives the constraint expression of power allocation,and further analyzes the relation between power allocation and relay location.The optimal system power allocation parameters in single relay and two relays are calculated.System simulation shows that the optimal power allocation performs better than traditional equal power allocation.