128 search results - page 4 / 26 » Carrier Sensing Based Multiple Access Protocols for Cognitiv... |
GLOBECOM
2010
IEEE
13 years 3 months ago
2010
IEEE
In a cognitive radio network, the full-spectrum is usually divided into multiple channels. However, due to the hardware and energy constraints, a cognitive user (also called second...
WICON
2008
13 years 7 months ago
2008
Cognitive radio networks that allow dynamic spectrum access are considered spectrally more efficient than networks using fixed spectral allocation. These networks are characterize...
INFOCOM
2008
IEEE
14 years 6 days ago
2008
IEEE
—A new and simple MAC protocol is proposed. Each node transmits a burst with length sampled from a geometric distribution with parameter q followed by a carrier sense slot. A nod...
JSAC
2011
13 years 22 days ago
2011
Abstract—Cognitive radio (CR) technology enables the opportunistic use of the vacant licensed frequency bands, thereby improving the spectrum utilization. However, the CR operati...
TSP
2010
13 years 14 days ago
2010
Effective spectrum sensing is a critical prerequisite for multi-channel cognitive radio (CR) networks, where multiple spectrum bands are sensed to identify transmission opportuniti...