18 search results - page 4 / 4 » Adaptive Power Loading for OFDM-Based Cognitive Radio System... |
JCM
2006
13 years 4 months ago
2006
Abstract-- Future generations of wireless systems require opportunistic spectrum access techniques to effectively detect and access temporarily unused spectrum bands. Cognitive rad...
MOBICOM
2009
ACM
13 years 11 months ago
2009
ACM
There has been burgeoning interest in wireless technologies that can use wider frequency spectrum. Technology advances, such as 802.11n and ultra-wideband (UWB), are pushing towar...
MOBICOM
2009
ACM
13 years 11 months ago
2009
ACM
In November 2008, the FCC ruled that the digital TV whitespaces be used for unlicensed access. This is an exciting development because DTV whitespaces are in the low frequency ran...