180 search results - page 27 / 36 » Differential Cooperative Communications with Space-Time Netw... |
GLOBECOM
2007
IEEE
15 years 4 months ago
2007
IEEE
— Recent studies indicate the presence of a significant amount of idle licensed spectrum, in different time periods and geographic locations. Prompted by the latest regulatory ch...
VTC
2010
IEEE
14 years 8 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...
IWCMC
2006
ACM
15 years 3 months ago
2006
ACM
Space time convolutional codes (STCCs) are an effective way to combine transmit diversity with coding. The computational complexity of designing STCCs generally increases exponent...
MOBICOM
2009
ACM
15 years 4 months ago
2009
ACM
Cognitive relays form a special cooperation relationship among users in cognitive radio networks, and help increase the transmission rates of both primary users and secondary user...
PIMRC
2008
IEEE
15 years 4 months ago
2008
IEEE
— We describe and analyze Minimum Path Difference (MPD), a metric to improve threshold-based Selection Decodeand-Forward (SDF) protocols in cooperative wireless networks with cha...