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In Cognitive Radio Network (CRN) Cognitive Users (CUs also called Secondary Users (SUs)) make use of frequency band used by Primary Users (PUs) in an opportunistic way. Routing in CRN is a challenging job because the packets within SUs need to be routed only when channels of PUs are idle. The CRN routing protocols proposed so far, does not assume that the PUs will take part in the route formation...
Emulation creates an environment that has ability to inject traffic from a simulator to a live network and vice-versa. The ns-3 is a freely available simulator for research and development in the field of computer network protocols. It has capability of emulation with limited functionality. To validate ns-3 applications and protocols in realistic scenario, we are required to integrate ns-3 with testbeds...
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