@inproceedings{87300cd328304e4babcf6cea6a4067c0,
title = "Optical self-interference cancellation system for improved spectrum sensing in cognitive radios",
abstract = "We propose and experimentally demonstrate an optical self-interference cancellation system to enable more efficient spectrum management and sensing in cognitive radios. The optical system is a radio-frequency front-end module, which cancels in-band self-interference, permitting a radio to simultaneously transmit and receive. By cancelling enough self-interference, a cognitive radio can perform continuous spectrum sensing, even while transmitting, to detect the presence of a licensed user or to scan for spectrum white spaces. The system achieves 83 dB of narrowband interference cancellation, and 60 dB of cancellation of a 50 MHz frequency-modulated signal. The center frequency of the optical canceler is freely tunable across the radio frequency spectrum, limited only by the bandwidth of the photodetector and the electro-optic modulators to 10 GHz. The system is modulation-format independent and requires only one piece of hardware to operate across a wide bandwidth.",
keywords = "cognitive radio, microwave photonics, self-interference cancellation, spectrum sensing",
author = "Chang, {Matthew P.} and Prucnal, {Paul R.} and Yanhua Deng",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 15th IEEE International Conference on Environment and Electrical Engineering, EEEIC 2015 ; Conference date: 10-06-2015 Through 13-06-2015",
year = "2015",
month = jul,
day = "22",
doi = "10.1109/EEEIC.2015.7165538",
language = "English (US)",
series = "2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "188--191",
booktitle = "2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings",
address = "United States",
}