Novel Adaptive B-Spline Filter for Hybrid Echo Cancellation

Author

Dash, Ratnakar ; Panda, Rutuparna ; Acharya, Bibhudendra ; Majhi, Banshidhar

Author_Institution

Dept. of Comput. Sci. & Eng., NIT, Rourkela

fYear

2008

fDate

8-10 Dec. 2008

Firstpage

1

Lastpage

6

Abstract

In this paper direct design of generalized B-spline filters has been presented. It has been shown how to choose filter parameters to meet the desired specifications. These filters exhibit maximally flat magnitude response and low side lobe energy as compared to Kaiser Window filter. Also a new type of adaptive B-spline filter has been developed in this paper. The application of the proposed filters for hybrid echo cancellation on digital cellular has been extensively studied. Results reveal the suitability of the proposed filters for such applications. This filter minimizes the mean square error using proportionate adaptive LMS algorithm. The proposed adaptive filter makes a perfect estimate of the hybrid echo.

Keywords

adaptive filters; cellular radio; digital communication; echo suppression; least mean squares methods; Kaiser Window filter; adaptive B-spline filter; adaptive LMS algorithm; digital cellular; direct design; generalized B-spline filters; hybrid echo cancellation; low side lobe energy; maximally flat magnitude response; mean square error; Adaptive filters; Convolution; Design engineering; Echo cancellers; Feedback; Finite impulse response filter; Least squares approximation; Smoothing methods; Spline; Telephony; Adaptive B-spline filter; Hybrid Echo; Kaiser Window; LMS algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial and Information Systems, 2008. ICIIS 2008. IEEE Region 10 and the Third international Conference on

Conference_Location

Kharagpur

Print_ISBN

978-1-4244-2806-9

Electronic_ISBN

978-1-4244-2806-9

Type

conf

DOI

10.1109/ICIINFS.2008.4798465

Filename

4798465