Simplified Power Allocation method for AF-Based Multi-Antennas Multiple Relays Networks

Multi-relay networking is known to have remarkable ability to increase network capacity and transmission quality. However, the rate maximization of amplify-and-forward multi-antenna in cooperative networks poses a nonlinear and nonconvex optimization challenge with nonlinear constraints that requires a highly complex solution. Based on mathematical principles, we unveil a novel method that reduces the complexity of the multi-antenna multi-relay rate maximization problem to an equivalent linear scalar expression. Having simplified the problem, we then apply the Branch and Bound algorithm as a known global optimization method to solve the expression.