TY - GEN
T1 - Energy-aware cooperative spectrum sensing with inter-channel interference cancellation for cognitive radio networks
AU - Zhao, Bingxuan
AU - Shimamoto, Shigeru
PY - 2011/9/26
Y1 - 2011/9/26
N2 - As the precondition of dynamic spectrum access (DSA), the accuracy and efficiency of spectrum sensing (SS) have an important impact on performance of cognitive networks. However, the performance of energy-aware SS is greatly compromised by the accompanying inter-channel interference (ICI). Aiming to alleviate ICI, this paper proposes an energy-aware cooperative SS method with ICI cancellation. The proposed method consists of two parts: the determination of the optimal threshold and the ICI cancellation. The optimal threshold is obtained by minimizing the sum of probabilities of false alarm and missed detection. The ICI cancellation is implemented indirectly by solving a non-homogeneous linear equation set with a coefficient matrix depending only on the distances between the secondary users and the transmitters of primary users. Simulation shows that the proposed SS method can efficiently cope with the ICI and can achieve much better performance in the range with low signal to interference-plus-noise ratio.
AB - As the precondition of dynamic spectrum access (DSA), the accuracy and efficiency of spectrum sensing (SS) have an important impact on performance of cognitive networks. However, the performance of energy-aware SS is greatly compromised by the accompanying inter-channel interference (ICI). Aiming to alleviate ICI, this paper proposes an energy-aware cooperative SS method with ICI cancellation. The proposed method consists of two parts: the determination of the optimal threshold and the ICI cancellation. The optimal threshold is obtained by minimizing the sum of probabilities of false alarm and missed detection. The ICI cancellation is implemented indirectly by solving a non-homogeneous linear equation set with a coefficient matrix depending only on the distances between the secondary users and the transmitters of primary users. Simulation shows that the proposed SS method can efficiently cope with the ICI and can achieve much better performance in the range with low signal to interference-plus-noise ratio.
KW - ICI cancellation
KW - cooperative spectrum sensing
KW - probability of false alarm
KW - probability of missed detection
UR - http://www.scopus.com/inward/record.url?scp=80053025082&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053025082&partnerID=8YFLogxK
U2 - 10.1109/ICCCN.2011.6005879
DO - 10.1109/ICCCN.2011.6005879
M3 - Conference contribution
AN - SCOPUS:80053025082
SN - 9781457706387
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
BT - 2011 20th International Conference on Computer Communications and Networks, ICCCN 2011 - Proceedings
T2 - 2011 20th International Conference on Computer Communications and Networks, ICCCN 2011
Y2 - 31 July 2011 through 4 August 2011
ER -