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Spectrum Sharing via Collaborative RFI Cancellation for Radio Astronomy

Careem, Maqsood and Chakaraborty, Shuvam and Dutta, Aveek and Saha, Dola and Hellbourg, Gregory (2021) Spectrum Sharing via Collaborative RFI Cancellation for Radio Astronomy. In: 2021 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN). IEEE , Piscataway, NJ, pp. 97-104. ISBN 978-1-6654-1339-8.

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Radio frequency Interference (RFI) from cellular and other communication networks is commonly mitigated at the Radio Telescope without any active collaboration with the interfering sources. The expanding Universe and simultaneous proliferation of Earth based and LEO communication infrastructure is causing unprecedented RFI that require collaborative strategies to maintain the scientific and societal goal of each. In this work, we provide a method of signal characterization and its use in subsequent cancellation, that uses Eigenspaces derived from the astronomical and the RFI signals. This is different from conventional time-frequency domain analysis, which is limited to fixed characterizations (e.g., complex exponential in Fourier methods) that cannot adapt to the changing statistics (e.g., autocorrelation) of the RFI, typically observed from communication systems. Through our analysis and simulation using real-world astronomical signals, we are able to remove RFI from cellular networks by 89.04%, which reduces excision at the Telescope.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Careem, Maqsood0000-0001-5586-9748
Dutta, Aveek0000-0001-9364-0565
Saha, Dola0000-0003-1219-575X
Hellbourg, Gregory0000-0002-8191-3885
Additional Information:© 2021 IEEE.
Funding AgencyGrant Number
Subject Keywords:Radio frequency interference mitigation, Radio astronomy, Passive spectrum sharing
Record Number:CaltechAUTHORS:20220623-13057200
Persistent URL:
Official Citation:M. Careem, S. Chakaraborty, A. Dutta, D. Saha and G. Hellbourg, "Spectrum Sharing via Collaborative RFI Cancellation for Radio Astronomy," 2021 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), 2021, pp. 97-104, doi: 10.1109/DySPAN53946.2021.9677077
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115247
Deposited By: Tony Diaz
Deposited On:24 Jun 2022 22:14
Last Modified:28 Jun 2022 19:10

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