Spike-based signal processing

CSEE Seminar Series

  • Wed 4 Dec 19

    16:00 - 17:00

  • Colchester Campus


  • Event speaker

    Roxana Alexandru

  • Event type

    Lectures, talks and seminars

  • Event organiser

    Computer Science and Electronic Engineering, School of

  • Contact details

    Morteza Varasteh

Traditional sampling focuses on encoding and decoding signals by recoding the amplitude values of the signal at known time points. Time encoding is an alternative approach to classical sampling, inspired by the processing of information of spiking neurons in the human brain.

In this talk we consider time encoding of some classes of non-bandlimited signals, such as streams of Diracs and piecewise constant signals, and show how they can be fully recovered from their timing information.

We provide sufficient conditions for perfect recovery of the signals and present an algorithm to perform the reconstruction, as well as some simulation results. Finally, we suggest some open research questions in the area of event-based sensing and processing.

Spike-based signal processing


Roxana Alexandru is currently a Ph.D. candidate in the Electrical and Electronic Engineering Department at Imperial College London, under the supervision of Professor Pier Luigi Dragotti. In 2016 she graduated from Imperial College London with the Master’s degree (first class) and was awarded the Eric Laithwaite prize for outstanding innovation and Sony Prize for outstanding achievement.

Her current research interests include event-based information processing, computational neuroscience and social network analysis, mathematics for signal processing and inverse problems. 

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