Sciweavers

422 search results - page 28 / 85
» On the Wake-Up Problem in Radio Networks
Sort
View
JSAC
2011
215views more  JSAC 2011»
13 years 2 months ago
Opportunistic Spectrum Sharing Schemes for CDMA-Based Uplink MAC in Cognitive Radio Networks
—We consider a wireless cognitive radio network in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed to the primary users (PUs) to tra...
Xi Zhang, Hang Su
GLOBECOM
2010
IEEE
13 years 5 months ago
Routing in Hybrid Mesh Networks of Cognitive and IEEE 802.11 Radios
Abstract--Cognitive radios (CRs) are devices that access spectrum opportunistically taking advantage of unused portions of licensed spectrum. Therefore, depending on the licensed r...
Marcel William Rocha da Silva, José Ferreir...
VTC
2007
IEEE
158views Communications» more  VTC 2007»
14 years 1 months ago
Efficient Spatial Reuse in Multi-Radio, Multi-Hop Wireless Mesh Networks
— In the paper, we propose a novel scheduling mechanism without modifying the existing IEEE 802.11 MAC, called wireless Radio-Matching Protocol (RMP). It takes account of interfe...
Da-Ren Guo, Kuochen Wang, Lung-Sheng Lee
TWC
2008
188views more  TWC 2008»
13 years 7 months ago
Joint power control and beamforming for cognitive radio networks
We consider a secondary usage of spectrum scenario where a secondary network coexists and/or shares the radio spectrum with a primary network to which the spectrum is licensed. The...
Habibul Islam, Ying-Chang Liang, Anh Tuan Hoang
ADHOCNOW
2010
Springer
13 years 8 months ago
On Alarm Protocol in Wireless Sensor Networks
We consider the problem of efficient alarm protocol for ad-hoc radio networks consisting of devices that try to gain access for transmission through a shared radio communication ch...
Jacek Cichon, Rafal Kapelko, Jakub Lemiesz, Marcin...