122 search results - page 8 / 25 » Cognitive networks achieve throughput scaling of a homogeneo... |
JSAC
2011
13 years 2 months ago
2011
—In this paper, opportunistic multiple access to the under-utilized channel resources is investigated. Exploiting source burstiness, secondary cognitive nodes utilizes primary no...
CORR
2008
Springer
13 years 7 months ago
2008
Springer
Abstract--We consider power control in cognitive radio networks where secondary users identify and exploit instantaneous and local spectrum opportunities without causing unacceptab...
JSAC
2011
13 years 2 months ago
2011
— In cognitive radio networks (CRNs), effective and efficient channel exploitation is imperative for unlicensed secondary users to seize available network resources and improve ...
CISS
2008
IEEE
13 years 9 months ago
2008
IEEE
Cognitive radios permit dynamic control of physical layer resources such as transmission power and constellation size; these degrees of freedom can be employed to achieve significa...
GLOBECOM
2010
IEEE
13 years 5 months ago
2010
IEEE
Abstract--Cognitive radio networks require fast and reliable spectrum sensing to achieve high network utilization by secondary users. Current optimization approaches to spectrum se...