CAJ | 학술논문

针对记忆多项式数字预失真的问题，构造了一个记忆多项式预失真系统，通过非直接学习结构（ILA）实现系数估计，根据系统特性推导出改进LMS算法。以Matlab为平台，仿真结果表明这种记忆多项式预失真器能够较好地消除失真。
침대기억다항식수자예실진적문제，구조료일개기억다항식예실진계통，통과비직접학습결구（ILA）실현계수고계，근거계통특성추도출개진LMS산법。이Matlab위평태，방진결과표명저충기억다항식예실진기능구교호지소제실진。
Aiming at the problem of digital pre-distortion in memory polynomial,a memory polynomial pre-distortion system is constructed,which realize the estimate of the coefficients through indirect learning architecture(ILA)approach,and the modi-fication LMS algorithm is derived according to the system characteristics. The results of simulation on Matlab show that the memory polynomial pre-distorter can effectively reduce the distortion.