375 search results - page 15 / 75 » Accessible Capacity of Secondary Users |
165
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INFOCOM
2010
IEEE
15 years 4 months ago
2010
IEEE
—We venture beyond the “listen-before-talk” strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary c...
144
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GLOBECOM
2008
IEEE
16 years 14 days ago
2008
IEEE
— It is known that the capacity of parallel (multi-carrier) Gaussian point-to-point, multiple access and broadcast channels can be achieved by separate encoding for each subchann...
184
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JSAC
2008
15 years 6 months ago
2008
Abstract--The concept of cognitive radio (or secondary spectrum access) is currently under investigation as a promising paradigm to achieve efficient use of the frequency resource ...
170
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WIOPT
2010
IEEE
15 years 4 months ago
2010
IEEE
Abstract—Development of dynamic spectrum access and allocation techniques recently have made feasible the vision of cognitive radio systems. However, a fundamental question arise...
169
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GLOBECOM
2007
IEEE
16 years 10 days ago
2007
IEEE
Abstract—We explore the performance tradeoff between opportunistic and regulated access inherent in the design of multiuser cognitive radio networks. We consider a cognitive radi...