TY - GEN
T1 - Optical self-interference cancellation system for improved spectrum sensing in cognitive radios
AU - Chang, Matthew P.
AU - Prucnal, Paul Richard
AU - Deng, Yanhua
PY - 2015/7/22
Y1 - 2015/7/22
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84943191818&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943191818&partnerID=8YFLogxK
U2 - 10.1109/EEEIC.2015.7165538
DO - 10.1109/EEEIC.2015.7165538
M3 - Conference contribution
AN - SCOPUS:84943191818
T3 - 2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings
SP - 188
EP - 191
BT - 2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th IEEE International Conference on Environment and Electrical Engineering, EEEIC 2015
Y2 - 10 June 2015 through 13 June 2015
ER -