Designing of QMF Bank

Authors

  • Dinesh Kumar (HOD) Computer Science & IT
  • Felix Deepak Minj

Keywords:

Quadrature mirror, transfer functions, optimization

Abstract

 Quadrature mirror filter (QMF) banks have been of great interest during the past decade. These filters find application where a discrete signal is to split into a number of consecutive bands in the frequency domain, so that sub-band signal can be processed in an independent manner and sufficient compression may be achieved. Typical processing includes under sampling the sub-band signals, encoding them and transmitting over a channel. Eventually, at some point in the process, the sub-band signals should be recombined so that original signal is properly reconstructed. Typical application of such signal splitting includes sub-band coders for video signals [2], digital trans-multiplexers used in FDM/TDM conversion, and frequency domain speech scramblers. In this thesis, we look at the QMF design problem purely as a signal reconstruction problem. The channel is therefore assumed to be noiseless and the exact signal characteristics are not given. We treat the QMF design problem as a multivariable optimization over the filter coefficient.  Keywords: Quadrature mirror, transfer functions, optimization 

Author Biography

  • Dinesh Kumar, (HOD) Computer Science & IT
    Computer Science & ITHead of department

Downloads

Published

2012-02-14

Issue

Vol. 1 No. 2 -3 (2011)

Section

Review Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

 

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

·         I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.

·         I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).

·         I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.

·          I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. _______________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.