TY - GEN
T1 - Joint rate and power control for coded cognitive radio networks
AU - Rajawat, Ketan
AU - Dall'Anese, Emiliano
AU - Giannakis, Georgios B.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - A cross-layer design in the presence of an underlying indeterminacy of propagation channels and interference levels is formulated for wireless cognitive networks, where the nodes are allowed to perform network coding. In lieu of full inter-system cooperation, statistics of signal-to-noise-plus- interference ratios (SINRs) and interference levels are leveraged to obtain optimal end-to-end session rates, network code design variables, and transmit-powers, while sharing spectral resources with incumbent primary systems in an underlay setup. Solution of the formulated optimization problem is hard to approach, mostly because of a lack of tractability of the resultant SINR distributions. Nonetheless, suitable approximations are employed to obtain an approximate convex problem, amenable to efficient solution. Numerical tests verify the ability of the proposed scheme to adapt network and physical layer parameters to the propagation environment.
AB - A cross-layer design in the presence of an underlying indeterminacy of propagation channels and interference levels is formulated for wireless cognitive networks, where the nodes are allowed to perform network coding. In lieu of full inter-system cooperation, statistics of signal-to-noise-plus- interference ratios (SINRs) and interference levels are leveraged to obtain optimal end-to-end session rates, network code design variables, and transmit-powers, while sharing spectral resources with incumbent primary systems in an underlay setup. Solution of the formulated optimization problem is hard to approach, mostly because of a lack of tractability of the resultant SINR distributions. Nonetheless, suitable approximations are employed to obtain an approximate convex problem, amenable to efficient solution. Numerical tests verify the ability of the proposed scheme to adapt network and physical layer parameters to the propagation environment.
KW - Cognitive radio networks
KW - cross-layer optimization
KW - network coding
KW - outage probability
KW - power control
UR - http://www.scopus.com/inward/record.url?scp=84861309972&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861309972&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2011.6190296
DO - 10.1109/ACSSC.2011.6190296
M3 - Conference contribution
AN - SCOPUS:84861309972
SN - 9781467303231
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1638
EP - 1642
BT - Conference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
T2 - 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
Y2 - 6 November 2011 through 9 November 2011
ER -