CAJ | 학술논문

排列模糊性和幅度模糊性一直是在频域上分离卷积混合信号所面临的主要问题,针对该问题,给出了一种基于相邻频点的幅度相关之和的、快速有效地解决频域分离算法中排列模糊性的方法;即通过定义相邻频点的相关矩阵并通过其置换形式来解决排列模糊问题,从而在频域上有效的分离源信号,仿真证明,该算法可以对卷积混合信号实行快速有效分离,分离效果理想,并大幅减少计算量。
배렬모호성화폭도모호성일직시재빈역상분리권적혼합신호소면림적주요문제,침대해문제,급출료일충기우상린빈점적폭도상관지화적、쾌속유효지해결빈역분리산법중배렬모호성적방법;즉통과정의상린빈점적상관구진병통과기치환형식래해결배렬모호문제,종이재빈역상유효적분리원신호,방진증명,해산법가이대권적혼합신호실행쾌속유효분리,분리효과이상,병대폭감소계산량。
Ambiguities in permutation and amplitude are the main problems in frequency domain blind signal separation.A fast and efficient frequency domain method of solving the permutation ambiguity for blind source separation is investigated in order to solve the permutation ambiguity.A correlation matrix between two neighbor frequency bins is developed.It is transformed into a permutation matrix to deal with the permutation ambiguity.it’s simulation results illustrate that the new method improves average SNR and cuts down computation greatly.