Fully sigma-delta modulation encoded FIR filters

  • Authors:

  • P.W. Wong

  • Affiliations:

  • Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY

  • Venue:
  • IEEE Transactions on Signal Processing
  • Year:
  • 1992

Quantified Score

Hi-index 35.68

Visualization

Abstract

The author suggests an FIR filter structure where both the input signal and the impulse response are encoded using sigma-delta modulation. As a result, the convolution can be obtained by summing a collection of binary or ternary numbers, depending on the quantizer in the sigma-delta modulator. This filter structure can accept analog input signals directly and can be built using modular hardware. The overall error spectrum due to the encoding/decoding processes is derived, and the implementation issues of this filter structure are discussed. An example of its performance with different input signals is provided