A design of vector filter banks

Fumio Itami, Eiji Watanabe, Akinori Nishihara, Takeshi Yanagisawa

Research output: Contribution to conferencePaper

Abstract

Vector filter banks (VFB's) can represent filter banks using a block sampling and the vector transforms. They are also appropriate to vector quantization. In the conventional study for VFB's, their polyphase representations and perfect reconstruction (PR) conditions have been given. However, no design method for VFB's has been given. This paper proposes a design method for VFB's using DFT modulation. First, we derive a polyphase representations using DFT modulation where the block size is the multiple of the number of channels. The efficient matrix representations are also presented in which FFT algorithm can be used. Next, we propose a realization method for PR. We show that PR conditions are described by linear equations, and PR can be realized using larger-length analysis filters compared with that of scalar DFT modulated FIR filter banks. Finally, we show a design example of proposed VFB's.

Original languageEnglish
Pages604-607
Number of pages4
Publication statusPublished - 2000 Dec 1
Event2000 IEEE Asia-Pacific Conference on Circuits and Systems: Electronic Communication Systems - Tianjin, China
Duration: 2000 Dec 42000 Dec 6

Conference

Conference2000 IEEE Asia-Pacific Conference on Circuits and Systems: Electronic Communication Systems
CountryChina
CityTianjin
Period00/12/400/12/6

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Itami, F., Watanabe, E., Nishihara, A., & Yanagisawa, T. (2000). A design of vector filter banks. 604-607. Paper presented at 2000 IEEE Asia-Pacific Conference on Circuits and Systems: Electronic Communication Systems, Tianjin, China.