Single and Multiple -Variable Step Size Normalized Least Mean Square Algorithms for Network Echo Cancellation

نویسندگان

  • Olutayo O. Oyerinde
  • Stanley H. Mneney
چکیده

In this paper, we propose improved versions of normalized least mean square (NLMS) algorithm: single and multiple -variable step size normalized least mean square (VSSNLMS) algorithms for echo cancellation. The presented algorithms exhibit faster convergence rate in comparison to NLMS algorithm. Simulation results employing standard figure of merits show how the algorithms perform better than NLMS algorithm based echo canceller. The good performance exhibit by these algorithms in terms of convergence rate as indicated by Means Squared Error (MSE) and Echo Return Loss Enhancement (ERLE) will lend them to deployment in the real-time network echo cancellation applications.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Variable Step Size Algorithms for Network Echo Cancellation

Convergence rate of an algorithm is an important factor that determines the deployment of such algorithm in a real time application. In this paper, we propose improved versions of normalized least mean square (NLMS) algorithm: single and multiple -variable step size normalized least mean square (VSSNLMS) algorithms for echo cancellation. The presented algorithms exhibit faster convergence rate ...

متن کامل

A Variable Step-size Proportionate Nlms Algorithm for Echo Cancellation

The proportionate normalized least-mean-square (PNLMS) algorithms were developed in the context of network echo cancellation. They outperform the normalized leastmean-square (NLMS) algorithm only when the echo path is sparse. Unfortunately, realworld network echo path may not be that sparse sometimes, while the acoustic echo paths are usually less sparse. The improved PNLMS (IPNLMS) algorithm i...

متن کامل

Acoustic Echo Cancellation Using Modified Variable Step Size Least Mean Square Adaptive Algorithm

this paper is focused on implementation of acoustic echo cancellation using modified variable step size least mean square algorithm (MVSSLMS) in LabVIEW. Simulation experiments are done to measure its performance and compared with other conventional variable step size algorithms. Results show better performance of MVSSLMS over other algorithms in terms of echo return loss enhancement (ERLE), es...

متن کامل

A Family of Variable Step-size Nlms Algorithms for Echo Cancellation

The normalized least-mean-square (NLMS) algorithm is one of the most common choices for echo cancellation. Nevertheless, an NLMS algorithm has to compromise between several performances criteria (e.g., convergence rate versus misadjustment, tracking capabilities versus robustness). Thus, a variable step-size NLMS (VSS-NLMS) algorithm represents a more reliable solution. Recently, several VSS-NL...

متن کامل

A New Variable Step-Size NLMS Algorithm and its Performance Evaluation in Echo Cancelling Applications

In this work we introduce a variable step-size normalized LMS algorithm for adaptive echo cancellation in a FIR structure. In the proposed scheme, the step-size adjustment is controlled by using the square of the cross-correlation between the squared output error and the adaptive filter output. The proposed algorithm (that we call VSSSC after variable step size based on the squared cross-correl...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008