计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
7期
1997-2001
,共5页
回声消除%仿射投影算法%脉冲干扰%M-估计%有色输入
迴聲消除%倣射投影算法%脈遲榦擾%M-估計%有色輸入
회성소제%방사투영산법%맥충간우%M-고계%유색수입
echo cancellation%APA%impulsive interference%M-estimate%colored input
在回声消除中，针对回声路径具有稀疏性的优势，有学者提出基于μ准则记忆的改进型成比例仿射投影算法（μ‐MIPAPA），但该算法抗脉冲干扰性能较差。为此将稳健估计中的M估计应用于该算法，提出一种基于M 估计μ准则记忆的改进型成比例仿射投影算法（μ‐MMIPAPA）。为使算法具有更好的稳态性能，采用改良的 Huber M 估计函数，改进阈值参数的选取方式。有色输入下的稀疏回声信道辨识结果表明了μ‐M M IPA PA的良好稳态性能和抗脉冲干扰性能。
在迴聲消除中，針對迴聲路徑具有稀疏性的優勢，有學者提齣基于μ準則記憶的改進型成比例倣射投影算法（μ‐MIPAPA），但該算法抗脈遲榦擾性能較差。為此將穩健估計中的M估計應用于該算法，提齣一種基于M 估計μ準則記憶的改進型成比例倣射投影算法（μ‐MMIPAPA）。為使算法具有更好的穩態性能，採用改良的 Huber M 估計函數，改進閾值參數的選取方式。有色輸入下的稀疏迴聲信道辨識結果錶明瞭μ‐M M IPA PA的良好穩態性能和抗脈遲榦擾性能。
재회성소제중，침대회성로경구유희소성적우세，유학자제출기우μ준칙기억적개진형성비례방사투영산법（μ‐MIPAPA），단해산법항맥충간우성능교차。위차장은건고계중적M고계응용우해산법，제출일충기우M 고계μ준칙기억적개진형성비례방사투영산법（μ‐MMIPAPA）。위사산법구유경호적은태성능，채용개량적 Huber M 고계함수，개진역치삼수적선취방식。유색수입하적희소회성신도변식결과표명료μ‐M M IPA PA적량호은태성능화항맥충간우성능。
For echo cancellation ,theμ‐law memory improved proportionate affine projection algorithm (μ‐MIPAPA) has been proposed to take advantage of the sparseness of the echo path .However ,the algorithm has poor performance on combating im‐pulsive interference .The M‐estimate of robust estimates was applied to the algorithm ,and aμ‐law memory improved proportion‐ate affine projection algorithm based on M‐estimate (μ‐MMIPAPA) was presented .To make the algorithm has better steady‐state perfor‐mance ,a modified Huber M estimation function was used and the way of the threshold parameter selection was improved .The perfor‐mance of the proposed algorithm was verified by the simulation of sparse echo channel identification in colored input .
