36 search results - page 2 / 8 » Generalized Access for MIMO Cognitive Radios |
TSP
2012
12 years 14 days ago
2012
Abstract—We consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive...
ICASSP
2011
IEEE
12 years 8 months ago
2011
IEEE
A weighted sum-rate maximization problem is considered for an access point (AP) allocating resources to wireless cognitive radios (CRs) communicating using orthogonal frequency-di...
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
Cognitive radio is generally understood as an intelligent wireless communication system aiming at the efficient utilization of radio resources. We argue for the extension of its sc...
EJWCN
2010
12 years 11 months ago
2010
The spectrum scarcity problem emerged in recent years, due to unbalanced utilization of RF (radio frequency) bands in the current state of wireless spectrum allocations. Spectrum a...
DAC
2005
ACM
13 years 6 months ago
2005
ACM
The cellular wireless market has begun the transition to data centric services including high speed internet access, video, high quality audio, and gaming. Communications technolo...