Localization and Fingerprint of Radio Signals Employing a Multichannel Photonic Analog-to-Digital Converter

Roberto Llorente (1) , Morante Maria (1) , J.F Puche (2) , Nicolas Amiot (3) , Jac Romme (4) , Bernard Uguen (5) , Duplicy Jonathan (6)

1 NTC - Nanophotonics Technology Centre (NTC),
2 DAS Photonics - DAS Photonics
3 IETR - Institut d'Electronique et de Télécommunications de Rennes
4 IMST GmbH, - IMST GmbH,
5 IETR - Institut d'Électronique et des Technologies du numéRique
6 Agilent - Agilent Technologies Laboratories,

The fingerprint and localization of radio signals employing a multichannel photonic analog-to-digital converter (ADC) is proposed, analyzed, and demonstrated in a laboratory experiment. The photonic ADC detects the radio signals with high sensitivity in a large bandwidth without down-conversion stages. This is of special interest when processing emerging low-power wireless standards like ultra-wideband (UWB) radio. The optical processing in the multichannel photonic ADC is tailored for the localization and fingerprint of generic radio transmitters when orthogonal-frequency division multiplexing (OFDM) modulation is employed in the transmission. The photonic ADC includes engineered optical and electrical amplification. The experimental work demonstrates that detection of radio signals with -65 dBm power with signal-to-noise ratio better than 20 dB is feasible, which is in good accordance with the theoretical analysis. The multichannel photonic ADC comprises five optical channels which are precisely time-aligned in optical domain achieving 0.23-m spatial resolution (median) in the localization of radio transmitters. The experimental work also demonstrates that photonic-ADC processing is adequate for OFDM-based UWB radio-signal fingerprint including estimation of the average power, frequency band of operation, and time-frequency hopping pattern if applicable. UWB transmitter localization has been experimentally demonstrated with 0.4-m error

Mots clés: optical domain; optical processing; orthogonal-frequency division multiplexing modulation; photonic-ADC processing; radio signal fingerprint; radio signal localization; radio transmitters; signal-to-noise ratio; spatial resolution; time-frequency analysis; time-frequency hopping pattern; ultra wideband communication; ultra-wideband radio; UWB transmitter localization; amplification; analogue-digital conversion; cognitive radio; down-conversion stages; electrical amplification; frequency band; frequency hop communication; generic radio transmitters; low-power wireless standards; multichannel photonic ADC; multichannel photonic analog-to-digital converter; OFDM-based UWB radio-signal fingerprint; OFDM modulation; optical amplification; optical channels

Domaines: Sciences de l'information et de la communication

Roberto Llorente, Morante Maria, J.F Puche, Nicolas Amiot, Jac Romme, et al.. Localization and Fingerprint of Radio Signals Employing a Multichannel Photonic Analog-to-Digital Converter. IEEE Transactions on Microwave Theory and Techniques, 2010, 58 (11), pp.3304-3311. ⟨10.1109/TMTT.2010.2076730⟩. ⟨hal-00579060⟩