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提出了一种基于快速弦截法的数字基带预失真线性化技术的自适应算法,用于移动发射机中功率放大器的线性化。理论分析和仿真结果表明,该算法较二分法、线性迭代法收敛速率更快,而且只要求解的精度和预失真器的精度足够高,便可得到满意的线性度改善。
An adaptive algorithm of digital baseband pre-distortion linearization based on fast chord-cut method is proposed for the linearization of power amplifiers in mobile transmitters. The theoretical analysis and simulation results show that the proposed algorithm is faster than the dichotomy and the linear iterative method converges faster, and as long as the accuracy of the solution and the accuracy of the predistorter are high enough, the linearity can be satisfactorily improved.