Power optimization of amplify-and-forward relay aided OFDM communication system
Qian Ye-wang, Yu Fei, Lüxi Yang · Computer Engineering and Applications Journal · 2009
Power optimization of amplify-and-forward relay aided OFDM communication system is discussed in this paper.Because the solutions of the joint optimization problem are hard to get,an iterative sub-optimized method is proposed.In this method, power optimizations between source and relay nodes and between different sub-carriers of OFDM system are separated into two different optimization processes.They are solved iteratively to approach the solution of joint optimization problem.The simulation results show that this sub-optimized iterative algorithm can also get higher system capacity comparing with the one with equal power allocation.