32 search results - page 6 / 7 » Power Control in Cognitive Radio Systems Based on Spectrum S... |
INFOCOM
2010
IEEE
13 years 6 months ago
2010
IEEE
Abstract—WiMAX with femto cells is a cost-effective nextgeneration broadband wireless communication system. Cognitive Radio (CR) has recently emerged as a promising technology to...
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 ...
GLOBECOM
2009
IEEE
13 years 11 months ago
2009
IEEE
In this paper, cognitive transmission under quality of service (QoS) constraints is studied. In the cognitive radio channel model, it is assumed that the secondary transmitter sen...
JCM
2006
13 years 7 months ago
2006
- Current wireless systems are called vendor-central systems because, users should subscribe to a service provider (vendor) and receive the service through the spectrum assigned to...
CISS
2007
IEEE
14 years 1 months ago
2007
IEEE
— We propose an expectation-maximization (EM) technique for locating multiple transmitters based on power levels observed by a set of arbitrarily-placed receivers. Multiple trans...