11 search results - page 2 / 3 » A Cooperative Sensing Based Cognitive Relay Transmission Sch... |
TSP
2010
12 years 11 months ago
2010
Effective spectrum sensing is a critical prerequisite for multi-channel cognitive radio (CR) networks, where multiple spectrum bands are sensed to identify transmission opportuniti...
NTMS
2008
IEEE
13 years 11 months ago
2008
IEEE
—In this paper, the issues and methods regarding setting up the testbed for measuring the performance of cooperative transmission is introduced. Also, some experiments on both th...
GLOBECOM
2007
IEEE
13 years 11 months ago
2007
IEEE
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
GLOBECOM
2009
IEEE
13 years 11 months ago
2009
IEEE
Abstract— Two driving goals for cognitive radio (CR) technique are maximizing spectrum utilization and avoiding interference to primary users. In this paper, we deal with the CR ...
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
— Ultra wide band (UWB) ad-hoc networks have attracted much research attention in recent years. This paper proposes and investigates a new distributed cooperative routing strateg...