236 search results - page 6 / 48 » Model of primary and secondary context |
GLOBECOM
2009
IEEE
14 years 2 months ago
2009
IEEE
Abstract—We propose a model-based channel access mechanism for cognitive radio-enabled secondary network, which opportunistically uses the channel of an unslotted primary network...
WCNC
2008
IEEE
14 years 1 months ago
2008
IEEE
— In an opportunistic spectrum sharing system, secondary users equipped with cognitive radios opportunistically access spectrum that is not being used by the primary users, i.e.,...
PR
2008
13 years 7 months ago
2008
This paper presents a Hierarchical Context Hidden Markov Model (HC-HMM) for behavior understanding from video streams in a nursing center. The proposed HC-HMM infers elderly behav...
ICC
2008
IEEE
14 years 1 months ago
2008
IEEE
– According to the commons model of cognitive radio, the activity of secondary (unlicensed) nodes is required to guarantee quality-of-service (QoS) constraints on the transmissio...
JSAC
2008
13 years 7 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 ...