Operator Identification and Sampling

  title={Operator Identification and Sampling},
  author={G{\"o}tz E. Pfander and David Francis Walnut},
Time–invariant communication channels are usually modelled as convolution with a fixed impulse–response function. As the name suggests, such a channel is completely determined by its action on a unit impulse. Time–varying communication channels are modelled as pseudodifferential operators or superpositions of time and frequency shifts. The function or distribution weighting those time and frequency shifts is referred to as the spreading function of the operator. We consider the question of… CONTINUE READING
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On the sampling of functions and operators with an application to Multiple– Input Multiple–Output channel identification

  • G. Pfander, D. Walnut
  • editor,Proc. SPIE Vol. 6701,
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Operator identifcation and Feichtinger’s algebra. Sampl. Theory Signal Image Process

  • G. E. Pfander, D. Walnut
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