Adaptive paraunitary filter banks for principal and minor subspace analysis

  • Authors:

  • S. C. Douglas;S. Amari;S.-Y. Kung

  • Affiliations:

  • Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA;-;-

  • Venue:
  • ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 02
  • Year:
  • 1999

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Abstract

Paraunitary filter banks are important for several signal processing tasks. We consider the task of adapting the coefficients of a multichannel FIR paraunitary filter bank via gradient ascent or descent on a chosen cost function. The proposed generalized algorithms inherently adapt the system's parameters in the space of paraunitary filters. Modifications and simplifications of the techniques for spatio-temporal principal and minor subspace analysis are described. Simulations verify one algorithm's useful behavior in this task.