943 search results - page 61 / 189 » Compressed channel sensing |
VTC
2010
IEEE
13 years 7 months ago
2010
IEEE
— We consider the sensing of the frequency spectrum based on energy detection for cognitive radios. It has been shown that the reliability of the sensing can be improved by using...
GLOBECOM
2007
IEEE
14 years 3 months ago
2007
IEEE
— Spectrum sensing is a key enabling functionality in cognitive radio (CR) networks, where the CRs act as secondary users that opportunistically access free frequency bands. Due ...
GLOBECOM
2007
IEEE
14 years 3 months ago
2007
IEEE
— Physical carrier sense for wireless multihop networks has attracted a certain degree of attention since it is a simple yet important mechanism for distributed channel access. S...
ISCAS
2007
IEEE
14 years 3 months ago
2007
IEEE
— this paper presents an integrated 70dB gain, low-power, and low-noise active RC amplifier and filter for low bio-signals sensing applications. The -3dB sense channel bandwidth ...
PERCOM
2005
ACM
14 years 8 months ago
2005
ACM
Different opportunistic routing protocols have been proposed recently for routing in sensor networks. These protocols exploit the redundancy among nodes by using a node that is av...