331 search results - page 21 / 67 » Optimal Cooperative Relaying Schemes in IR-UWB Networks |
JSAC
2011
13 years 3 months ago
2011
—In this paper, opportunistic multiple access to the under-utilized channel resources is investigated. Exploiting source burstiness, secondary cognitive nodes utilizes primary no...
ICASSP
2011
IEEE
13 years 6 days ago
2011
IEEE
We investigate secure communications for a four-node relayeavesdropper channel with multiple data stream transmission, assuming that the eavesdropper’s channel state information...
TCOM
2010
13 years 3 months ago
2010
Abstract--This paper develops an amplify-and-forward relaying scheme for multiuser wireless cooperative networks under frequency-selective block-fading. Single-carrier frequency di...
ICUMT
2009
13 years 6 months ago
2009
Uplink users in cellular networks, such as UMTS/ HSPA, located at the edge of the cell generally suffer from poor channel conditions. Deploying intermediate relay nodes is seen as ...
JSAC
2007
13 years 8 months ago
2007
— The large number of network nodes and the energy constraints make Wireless Sensor Networks (WSN) one of the most important application fields for Cooperative Diversity. Node c...