关键词: 预失真, 记忆放大器, 自适应, 非线性

Abstract: Predistortion for nonlinear amplifier with memory always is very difficult. Traditional method using Volterra, Hammerstein and neural network model is not only complex, but their adaptation also not easy. High-efficient predistortion structure based on polynomial in memoryless predistortion was extended to memory predistortion by adding two delay line, and a simple polynomial model with tapped delay linear was used as the memory predistorter model. Combined the extended structure and the simple memory predistorter model can realize the linearization of the amplifier with memory. Simulation results demonstrated that the proposed scheme posses faster convergence and better linearization performance.

Key words: Predistortion, Amplifier with memory, adaptive, Nonlinear