TY - GEN

T1 - Spectrum sensing using single-radio switched-beam antenna systems

A1 - Tsakalaki,Elpiniki

A1 - Wilcox,David

A1 - De Carvalho,Elisabeth

A1 - Papadias,Constantinos B.

A1 - Ratnarajah,Tharmalingam

AU - Tsakalaki,Elpiniki

AU - Wilcox,David

AU - De Carvalho,Elisabeth

AU - Papadias,Constantinos B.

AU - Ratnarajah,Tharmalingam

PB - IEEE

PY - 2012

Y1 - 2012

N2 - The paper describes spectrum sensing using single-radio switched-beam arrays with reactance-loaded parasitic elements. At a given frequency, the antenna's loading conditions (reactive loads) are optimized for maximum average beamforming gain in the beampattern look direction. Circular permutations of the reactive loads rotate the narrowband beampattern to different angular positions dividing the whole space around the cognitive receiver into several angular subspaces. The beampattern directionality leverages the performance of spectrum sensing algorithms like the energy detection by enhancing the receive signal-to-noise ratio. Moreover, the selection combining across the weakly correlated beampatterns gives rise to a diversity action further boosting the probability of detection.

AB - The paper describes spectrum sensing using single-radio switched-beam arrays with reactance-loaded parasitic elements. At a given frequency, the antenna's loading conditions (reactive loads) are optimized for maximum average beamforming gain in the beampattern look direction. Circular permutations of the reactive loads rotate the narrowband beampattern to different angular positions dividing the whole space around the cognitive receiver into several angular subspaces. The beampattern directionality leverages the performance of spectrum sensing algorithms like the energy detection by enhancing the receive signal-to-noise ratio. Moreover, the selection combining across the weakly correlated beampatterns gives rise to a diversity action further boosting the probability of detection.

UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6333725&contentType=Conference+Publications

U2 - 10.4108/icst.crowncom.2012.248729

DO - 10.4108/icst.crowncom.2012.248729

SN - 978-1-4673-2976-7

BT - Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

T2 - Proceedings of the 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

SP - 118

EP - 123

ER -