TY - GEN
T1 - Sparsity-aware cooperative cognitive radio sensing using channel gain maps
AU - Kim, Seung Jun
AU - Dall'anese, Emiliano
AU - Giannakis, Georgios B
PY - 2009/12/1
Y1 - 2009/12/1
N2 - The cooperative cognitive radio (CR) sensing problem is considered, where a number of CRs collaboratively detect the presence of an unknown number of primary users (PUs) in the geographical area where the CR network is operating. A novel concept of channel gain maps is introduced to model and dynamically track the spatio-temporal evolution of the propagation environment. The channel gain map estimates are then exploited to perform dynamic cooperative sensing of timevarying PU activities based on a sparse regression formulation. A distributed algorithm is proposed to reduce the messagepassing overhead of the centralized counterpart for solving the ℓ1- penalized weighted least-squares problem.
AB - The cooperative cognitive radio (CR) sensing problem is considered, where a number of CRs collaboratively detect the presence of an unknown number of primary users (PUs) in the geographical area where the CR network is operating. A novel concept of channel gain maps is introduced to model and dynamically track the spatio-temporal evolution of the propagation environment. The channel gain map estimates are then exploited to perform dynamic cooperative sensing of timevarying PU activities based on a sparse regression formulation. A distributed algorithm is proposed to reduce the messagepassing overhead of the centralized counterpart for solving the ℓ1- penalized weighted least-squares problem.
UR - http://www.scopus.com/inward/record.url?scp=77953816697&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953816697&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2009.5469880
DO - 10.1109/ACSSC.2009.5469880
M3 - Conference contribution
AN - SCOPUS:77953816697
SN - 9781424458271
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 518
EP - 522
BT - Conference Record - 43rd Asilomar Conference on Signals, Systems and Computers
T2 - 43rd Asilomar Conference on Signals, Systems and Computers
Y2 - 1 November 2009 through 4 November 2009
ER -