4-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low Power Applications

Spyridion-Nektarios Daskalakis, Ricardo Correia, George Goussetis, Manos M. Tentzeris, Nuno Borges Carvalho, Apostolos Georgiadis

Research output: Contribution to journalArticle

Abstract

Ambient backscatter uses radio frequency signals available in the environment (e.g. radio broadcasting, television or mobile telephony) to transmit data effectively leading to significant energy and cost efficiency increase. This paper presents a novel wireless tag, which for the first time utilizes 4-pulse amplitude modulation (4-PAM) technique to modulate the ambient backscattered FM signals in order to send data to a nearby low-cost software defined radio reader. The tag is based on an RF front-end that uses a single transistor controlled by an ultra low-power microcontroller. The microcontroller includes an analog-to-digital converter (ADC) for sensing and a digital-to-analog converter (DAC) for RF front-end control. A proof-of-concept prototype is demonstrated in an indoor environment with the low bit rate of 345 bps and power consumption 27 µW. It operated using a real FM station at 34.5 Km away and the tag-to-reader distance was tested at 1 m. The value of energy spent in this modulator was 78.2 nJ/bit at 345 bps and 27.7 nJ/bit at 10.2 Kbps.
LanguageEnglish
JournalIEEE Transactions on Microwave Theory and Techniques
StateAccepted/In press - 24 Oct 2018

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Pulse amplitude modulation
Backscattering
Modulation
Digital to analog conversion
Microcontrollers
Radio broadcasting
Television
Modulators
Costs
Transistors
Electric power utilization

Cite this

Daskalakis, S-N., Correia, R., Goussetis, G., Tentzeris, M. M., Borges Carvalho, N., & Georgiadis, A. (Accepted/In press). 4-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low Power Applications. IEEE Transactions on Microwave Theory and Techniques.
Daskalakis, Spyridion-Nektarios ; Correia, Ricardo ; Goussetis, George ; Tentzeris, Manos M. ; Borges Carvalho, Nuno ; Georgiadis, Apostolos. / 4-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low Power Applications. In: IEEE Transactions on Microwave Theory and Techniques. 2018
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abstract = "Ambient backscatter uses radio frequency signals available in the environment (e.g. radio broadcasting, television or mobile telephony) to transmit data effectively leading to significant energy and cost efficiency increase. This paper presents a novel wireless tag, which for the first time utilizes 4-pulse amplitude modulation (4-PAM) technique to modulate the ambient backscattered FM signals in order to send data to a nearby low-cost software defined radio reader. The tag is based on an RF front-end that uses a single transistor controlled by an ultra low-power microcontroller. The microcontroller includes an analog-to-digital converter (ADC) for sensing and a digital-to-analog converter (DAC) for RF front-end control. A proof-of-concept prototype is demonstrated in an indoor environment with the low bit rate of 345 bps and power consumption 27 µW. It operated using a real FM station at 34.5 Km away and the tag-to-reader distance was tested at 1 m. The value of energy spent in this modulator was 78.2 nJ/bit at 345 bps and 27.7 nJ/bit at 10.2 Kbps.",
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4-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low Power Applications. / Daskalakis, Spyridion-Nektarios; Correia, Ricardo; Goussetis, George; Tentzeris, Manos M.; Borges Carvalho, Nuno; Georgiadis, Apostolos.

In: IEEE Transactions on Microwave Theory and Techniques, 24.10.2018.

Research output: Contribution to journalArticle

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T1 - 4-PAM Modulation of Ambient FM Backscattering for Spectrally Efficient Low Power Applications

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AU - Borges Carvalho,Nuno

AU - Georgiadis,Apostolos

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AB - Ambient backscatter uses radio frequency signals available in the environment (e.g. radio broadcasting, television or mobile telephony) to transmit data effectively leading to significant energy and cost efficiency increase. This paper presents a novel wireless tag, which for the first time utilizes 4-pulse amplitude modulation (4-PAM) technique to modulate the ambient backscattered FM signals in order to send data to a nearby low-cost software defined radio reader. The tag is based on an RF front-end that uses a single transistor controlled by an ultra low-power microcontroller. The microcontroller includes an analog-to-digital converter (ADC) for sensing and a digital-to-analog converter (DAC) for RF front-end control. A proof-of-concept prototype is demonstrated in an indoor environment with the low bit rate of 345 bps and power consumption 27 µW. It operated using a real FM station at 34.5 Km away and the tag-to-reader distance was tested at 1 m. The value of energy spent in this modulator was 78.2 nJ/bit at 345 bps and 27.7 nJ/bit at 10.2 Kbps.

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