Abstract
Cognitive radio networks are the next generation networks that are designed for the efficient utilization of the available spectrum. Cognitive radios are capable of changing their transmission parameters according to the sensed environment thereby avoiding interference between the cognitive users. In cognitive radio sensor networks the sudden appearance of a primary user or a failure in the node or a link affects the network performance of a secondary user the route discovery process has to be repeated by the secondary user which increases the delay in the packet delivery to the destination node. Hence this paper includes the comparison of two efficient routing algorithms called backup routing algorithm and dynamic path switching routing algorithm. The performance of the two routing algorithms are analysed and compared terms of packet delivery ratio (PDR), throughput and delay. The PDR for backup routing is 91%. The delay for backup routing is 400μs. The throughput is 206bps for backup routing algorithm.
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