Abstract:

In order to minimize disturbance to the authorized users, and reduce competition between cognitive users, guarantee cognitive radio system normal communication, the reliability theory can describe a state of the channel, whether the channel is used or unused by the cognitive users, the probability that the channel is used continuously for a period of time. Space domain, time domain and frequency domain are joining together to cooperate in joint research for spectrum allocation, the simulation results show that the transmission data volume and the total system throughput value are improved by threedimensional algorithm. Contribute to reduce interference between cognitive users with authorized users, and competition between cognitive users is reduced. The simulation shows three dimensional algorithm is effective.