Efficient Spectrum Searching and Monitoring in Cognitive Radio Network
Source: Iowa State University
Wireless spectrum is highly underutilized, where significant parts of it are used only for some time periods in an on/off manner and with large geographical variations. Such low utilization in spectrum usage resulted from currently deployed static frequency allocation policy. Apparently, in order to increase wireless spectrum utilization, more flexible spectrum management techniques are required (like Opportunistic Spectrum Sharing (OSS)), where secondary users are allowed to operate in frequency bands without the permission of the Primary User (PU), provided that they do not introduce harmful interference with the PU.