Cognitive Radio Home


Due to the rapidly increasing demands of wireless bandwidth, available spectral resources become scarce. Moreover, current fixed spectral allocation suffers from underutilization as in the case of TV bands. These are the motivations of Cognitive Radio (CR) network, which is defined as a radio that makes secondary users actively search for the idle channels NOT used by the primary users by scanning the whole spectrum. Our current research mainly focuses on channel modeling, search algorithm analysis and channel detection in CR network. Currently for CR, we are investigating the following:

For heterogeneous networks: