TY - GEN
T1 - Joint resource allocation and receiver map estimation in underlay cognitive radios
AU - Marques, Antonio G.
AU - Dall'Anese, Emiliano
AU - Giannakis, Georgios B
PY - 2013/10/18
Y1 - 2013/10/18
N2 - Conventional spectrum sensing schemes can detect active transmitters but not passive receivers, which have to be nevertheless protected from excessive interference whenever their bands are reused. In this paper, a resource allocation scheme for underlay cognitive radios is formulated, taking into account uncertainty of both propagation gains and locations of incumbent receivers. The performance of orthogonal access by secondary users is maximized under average interference constraints, using channel statistics and maps that pin-point areas where primary receivers are likely to reside. These maps are tracked using a Bayesian approach, based on a 1-bit message sent by the primary system whenever a communication disruption occurs due to interference.
AB - Conventional spectrum sensing schemes can detect active transmitters but not passive receivers, which have to be nevertheless protected from excessive interference whenever their bands are reused. In this paper, a resource allocation scheme for underlay cognitive radios is formulated, taking into account uncertainty of both propagation gains and locations of incumbent receivers. The performance of orthogonal access by secondary users is maximized under average interference constraints, using channel statistics and maps that pin-point areas where primary receivers are likely to reside. These maps are tracked using a Bayesian approach, based on a 1-bit message sent by the primary system whenever a communication disruption occurs due to interference.
KW - Bayesian estimator
KW - Cognitive radios
KW - Lagrange dual
KW - receiver localization
KW - resource allocation
KW - underlay access
UR - http://www.scopus.com/inward/record.url?scp=84890492647&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890492647&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2013.6638497
DO - 10.1109/ICASSP.2013.6638497
M3 - Conference contribution
AN - SCOPUS:84890492647
SN - 9781479903566
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 4429
EP - 4433
BT - 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Proceedings
T2 - 2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013
Y2 - 26 May 2013 through 31 May 2013
ER -