A cochlear heterodyning architecture for an RF fovea
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Sarpeshkar_A cochlear.pdf
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Author(s)
Mandal, Soumyajit
Sarpeshkar, Rahul
Date Issued
August 2010
Journal
Proceedings of 2010 IEEE International Symposium on Circuits and Systems (ISCAS)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Mandal, Soumyajit, and Rahul Sarpeshkar. “A Cochlear Heterodyning Architecture for an RF Fovea.” Proceedings of 2010 IEEE International Symposium on Circuits and Systems (ISCAS). 3825–3828. © Copyright 2010 IEEE
Version
Final published version
Abstract
We describe a novel wireless receiver architecture that is a broadband generalization of narrowband heterodyning systems commonly used in radio. It can be constructed with cochlea-like traveling-wave structures. We show how this architecture exploits the efficiency of cochlear spectrum analysis to perform parallel, multi-scale analysis of wideband signals. We discuss analogies between spectrum analysis in our architecture and the process of successive-subranging analog-to-digital conversion. When combined with our prior work on an RF cochlea, such architectures may be useful in cognitive radios for creating “RF foveas” that select the narrowband components present within wideband, but spectrally sparse signals.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/ISCAS.2010.5537711
