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Fast implementation of a general L/M rate changer by a filter bank structure

By Wing-Kuen Ling and Kwong-Shun Tam

Abstract

In this paper, we show that an L/M rate changer can be realized as a discrete time SISO (L,M) shift invariant system in form of a two-dimensional kernel function or a filter bank structure. Based on this realization, we can implement an L/M rate changer by a bank of filters with the average number of the coefficients in the filters in each channel is 1/L of the original L/M rate changer. Hence, the system is speed up by L. This helps the designer to design a sharp cutoff discrete time FIR filters in an L/M rate changer for some real time applications in video systems

Topics: H610 Electronic Engineering
Publisher: IEEE Hong Kong Chapter of Signal Processing
Year: 2001
OAI identifier: oai:eprints.lincoln.ac.uk:3112

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Citations

  1. (1998). Generate Multirate Building Structures with Application to Nonuniform Filter Banks,” doi
  2. (1993). Multirate Systems and Filter Banks, doi
  3. (2001). Theory of Discrete Time SISO Linear (L,M) Shift Invariant System”, doi

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