TY - GEN
T1 - Cooperative compressive spectrum sensing in cognitive radio based on W-OMP
AU - Zhou, Lei
AU - Man, Hong
PY - 2013
Y1 - 2013
N2 - Spectrum Sensing is an intensively studied topic in cognitive radio to locate unoccupied spectrum for improved channel utilization. However, the problem becomes more challenging in wideband spectrum sensing due to the limitation of hardware operational bandwidth. In this paper, we introduce a cooperative compressive spectrum sensing scheme to monitor the wideband spectrum usage in both frequency and space domain. The joint estimation enables secondary users (SUs) to identify (un)used frequency bands at arbitrary locations, and thus facilitates spatial frequency reuse. A novel weighted-Orthogonal Matching Pursuit (W-OMP) spectrum reconstruction algorithm based on OMP is developed to mitigate the effect of path shadowing and is able to significantly improve the detection performance. In addition, the implementation of W-OMP can be further simplified by taking advantage of the channel information. The simulation experiments show the feasibility of the proposed scheme, and demonstrate the superior performance of this method.
AB - Spectrum Sensing is an intensively studied topic in cognitive radio to locate unoccupied spectrum for improved channel utilization. However, the problem becomes more challenging in wideband spectrum sensing due to the limitation of hardware operational bandwidth. In this paper, we introduce a cooperative compressive spectrum sensing scheme to monitor the wideband spectrum usage in both frequency and space domain. The joint estimation enables secondary users (SUs) to identify (un)used frequency bands at arbitrary locations, and thus facilitates spatial frequency reuse. A novel weighted-Orthogonal Matching Pursuit (W-OMP) spectrum reconstruction algorithm based on OMP is developed to mitigate the effect of path shadowing and is able to significantly improve the detection performance. In addition, the implementation of W-OMP can be further simplified by taking advantage of the channel information. The simulation experiments show the feasibility of the proposed scheme, and demonstrate the superior performance of this method.
KW - Cognitive radio
KW - Compressive sensing
KW - Cooperative spectrum sensing
KW - OMP
KW - W-OMP
UR - http://www.scopus.com/inward/record.url?scp=84897703766&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897703766&partnerID=8YFLogxK
U2 - 10.1109/MILCOM.2013.203
DO - 10.1109/MILCOM.2013.203
M3 - Conference contribution
AN - SCOPUS:84897703766
SN - 9780769551241
T3 - Proceedings - IEEE Military Communications Conference MILCOM
SP - 1187
EP - 1192
BT - Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013
T2 - 2013 IEEE Military Communications Conference, MILCOM 2013
Y2 - 18 November 2013 through 20 November 2013
ER -