3793 search results - page 59 / 759 » The wireless synchronization problem |
WWW
2007
ACM
14 years 9 months ago
2007
ACM
Several research efforts as well as deployments have chosen IEEE 802.11 as a low-cost, long-distance access technology to bridge the digital divide. In this paper, we consider the...
GLOBECOM
2009
IEEE
14 years 21 days ago
2009
IEEE
IEEE 802.22 wireless regional area network (WRAN) is an emerging cognitive radio-based system. One of the major challenges for WRANs is how to efficiently schedule both channel sen...
JOIN
2007
13 years 8 months ago
2007
— One of the fundamental issues in sensor networks is the coverage problem, which reflects how well a sensor network is monitored or tracked by sensors. In this paper, we formul...
INFOCOM
2012
IEEE
11 years 11 months ago
2012
IEEE
—When a large amount of sensors are randomly deployed into a field, how can we make a sleep/activate schedule for sensors to maximize the lifetime of target coverage in the fie...
COMCOM
2010
13 years 9 months ago
2010
A number of IEEE 802.15.4 devices can form a tree topology as proposed by ZigBee specification. The ability to confine the shape and extent of the tree serves as the basis for add...