基于自适应遗传算法多项式预失真技术研究

提出了一种基于自适应遗传算法的多项式预失真补偿方法,该方法的基本原理是利用模拟进化类算法对目标函数进行逼近,对待求解参数进行辨识,进而得到多项式预失真模型。该算法具有良好的收敛性、全局性和鲁棒性,且具有较高的计算效率,为解决数字预失真自适应算法提供了一个新的参考。同时将自适应遗传算法应用于功放线性化设计中并进行了仿真。仿真分析表明,采用模拟进化类的遗传算法对功放失真抑制效果明显。

Adaptive Polynomial Pre-distortion Technology Based on the Genetic Algorithm

The paper presents an adaptive genetic algorithm based on polynomial pre-distortion compensation method.The basic principle of such polynomial pre-distortion technology is to use simulated evolutionary-like algorithm to approximate the objective function,treat solving parameter identification,and then get the polynomial pre-distortion model.The algorithm has good convergence and global robustness and with high computational efficiency and provides a new approach to the digital pre-distortion adaptive algorithm.The adaptive genetic algorithm is applied to the design of power amplifier linearization and simulation,and the results show that simulated evolution using genetic algorithm class has obvious amplifier distortion suppression effect.