两种模式粒子群算法功放预失真处理比较

Comparison of two predistortion methods based on different particle swarm optimization models

针对记忆非线性功率放大器,采用基于粒子群优化算法的预失真处理方法,确定参数选取原则。以同步和异步两种模式粒子群算法进行预失真处理,结果显示,它们都可获得良的好线性化效果,异步模式虽可提高算法收敛速度,但比同步模式更易陷入局部最优。

For memory nonlinear power amplifier,the predistortion processing method based on particle swarm optimization(PSO)algorithm is adopted to determine the principle of parameter selection.Predistortion processing is performed by two modes of PSO with synchronous or asynchronous.The results show that both of them can obtain good linearization effect.Although asynchronous mode can improve the convergence speed of the algorithm,it is easier to fall into local optimum than synchronous mode.