Routing Algorithm of Optimal Route for OFDM-based Cognitive Radio Networks
Jun Yang · Video Engineering · 2013
In order to guarantee the reliability of the cognitive user data transmission in the OFDM cognitive radio networks,an optimal route OFDM-based cognitive routing(OROCR) algorithms is presented in this paper,in which considers the mobile of spectrum by the primary user reappearing in the channel.First of all,the model of cognitive radio network is established which calculate expected transmission time and channel interference.Secondly,the similar on-demand routing algorithm is used to find all possible paths;In addition,according to the index of the minimum expected transmission time minimum channel interference,we can obtain the optimal routing.The simulation results show that the algorithm OROCR can significantly reduce the end-to-end delay and improve end-to-end throughput obviously.