Power allocation schemes for full-duplex two-way relay systems

Two power allocation schemes are presented to maximize SE and EE respectively.An iterative algorithm is used to solve the EE optimization problem.Firstly,the EEoptimization problem is transformed into a tractable non-fractional one by using the fractional programming method,and then the Dinkelbach algorithm is used to obtain the optimal power of the users,and then one-dimensional search is used to obtain the best relay amplification factor,and finally an iterative algorithm is used to maximize EE.SE optimization problem is also solved bythe iterative algorithm.The simulation results show that the two power allocation schemes aimed at different objective functions improve the EE and SE of the system respectively,and the iterative algorithm can converge quickly to obtain the optimal solution