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  • Research Article
  • Open Access

Efficient Implementation of Complex Modulated Filter Banks Using Cosine and Sine Modulated Filter Banks

EURASIP Journal on Advances in Signal Processing20062006:058564

https://doi.org/10.1155/ASP/2006/58564

  • Received: 12 April 2005
  • Accepted: 17 October 2005
  • Published:

Abstract

The recently introduced exponentially modulated filter bank (EMFB) is a -channel uniform, orthogonal, critically sampled, and frequency-selective complex modulated filter bank that satisfies the perfect reconstruction (PR) property if the prototype filter of an -channel PR cosine modulated filter bank (CMFB) is used. The purpose of this paper is to present various implementation structures for the EMFBs in a unified framework. The key idea is to use cosine and sine modulated filter banks as building blocks and, therefore, polyphase, lattice, and extended lapped transform (ELT) type of implementation solutions are studied. The ELT-based EMFBs are observed to be very competitive with the existing modified discrete Fourier transform filter banks (MDFT-FBs) when comparing the number of multiplications/additions and the structural simplicity. In addition, EMFB provides an alternative channel stacking arrangement that could be more natural in certain subband processing applications and data transmission systems.

Keywords

  • Sine
  • Data Transmission
  • Quantum Information
  • Discrete Fourier Transform
  • Transmission System

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Authors’ Affiliations

(1)
Institute of Communications Engineering, Tampere University of Technology, P.O. Box 553, Tampere, 33101, Finland

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Copyright

© Viholainen et al. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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