Design of multi-channel near-perfect-reconstruction transmultiplexers using cosine-modulated filter banks

  • Authors:
  • Fernando Cruz-Roldán;Ángel M. Bravo-Santos;Pilar Martín-Martín;Roberto Jiménez-Martínez

  • Affiliations:
  • Dept. de Teoría de la Señal y Comunicaciones, Escuela Politécnica, Universidad de Alcalá, 28871 Alcalá de Henares, Spain;Dept. de Teoría de la Señal y Comunicaciones, Escuela Politécnica, Universidad de Alcalá, 28871 Alcalá de Henares, Spain;Dept. de Teoría de la Señal y Comunicaciones, Escuela Politécnica, Universidad de Alcalá, 28871 Alcalá de Henares, Spain;Dept. de Teoría de la Señal y Comunicaciones, Escuela Politécnica, Universidad de Alcalá, 28871 Alcalá de Henares, Spain

  • Venue:
  • Signal Processing
  • Year:
  • 2003

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Abstract

The paper considers the design of nearly perfect reconstruction transmultiplexer systems based on cosine-modulated filter banks. Under the same scheme of cosine-modulation, several families of transmultiplexer systems are derived, the main difference of which is the prototype filter. We show several ways of obtaining this filter and we also propose a new technique for designing high-quality prototype filters. A comparative analysis is included to confirm the validity of the theory.