Henthorn, S. orcid.org/0000-0003-1913-9283, O'Farrell, T. orcid.org/0000-0002-7870-4097 and Ford, K.L. orcid.org/0000-0002-1080-6193 (2020) Metasurface direct antenna modulators in non-line of sight channels for the Internet of Things. In: 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications. 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 31 Aug - 03 Sep 2020, London, UK. IEEE ISBN 9781728144917
Abstract
A Direct Antenna Modulation (DAM) transmitter is modelled in wideband channels using Direct Sequence Spread Spectrum (DSSS) as a low-cost, low-complexity solution for the Internet of Things (IoT). Metasurface-based DAM is an emerging technique where a baseband signal is modulated directly onto a radio frequency (RF) carrier wave using a reconfigurable metasurface. This technique removes the requirement of the power amplifier (PA) to amplify complex modulated signals, allowing the use of a simple, energy efficient PA to amplify only the carrier wave. The reduction in power consumption and RF electronics makes DAM an attractive low-cost, low-complexity transmitter technology. This paper discusses the use of a DAM transmitter as an IoT access point transmitter using DSSS to overcome broad-band fading and mitigate the systematic distortion inherent in the technique. Simulation shows DAM to have negligible impairment in 3GPP urban channels compared with ideal modulation when balanced spreading codes are used.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Internet of Things; Metamaterials; Reconfigurable Intelligent Surfaces; Direct Sequence Spread Spectrum; Direct Antenna Modulation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Sciences Research Council EP/S008101/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Oct 2022 15:26 |
Last Modified: | 06 Oct 2022 15:26 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/pimrc48278.2020.9217228 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:191237 |