摘要
针对频域LMS算法收敛速度较慢的缺点,将LMS频域快速算法和变步长技术相结合,提出了一种基于新的Sigmoid函数的变步长频域快速自适应收发隔离算法。理论分析和计算机仿真表明,新算法除具有原频域快速算法的优点外,还具有较快的收敛速度和良好的收敛精度,可以有效地应用于干扰机自适应收发隔离系统中。
Aimed at the disadvantage of slow convergence rate in frequency domain LMS algorithm, according to the combine of frequency domain LMS fast algorithm with variable step-size technique, a fast variable step-size adaptive transmitter-receiver isolation algorithm in frequency domain is presented based on a new Sigmoid function. The theoretics analysis and the compute simulation indicate that the new algorithm not only has advantages of original frequency domain LMS fast algorithm but also has fast convergence rate and well convergence precision, so it can be applied well in the antenna adaptive transmitter-receiver isolation system in jammer.
