Özet:

With the growing use of frequency based services and devices, the cognitive radio network has become an important technology for the future of wireless networks. However, the number of frequency based network applications for fixed and mobile devices both in licensed, and unlicensed networks also shows a significant increase. In addition to frequency based applications; for efficient use of spectrum in cognitive radio networks, characteristics of medium access techniques is utilized. Among these medium access techniques, slotted Aloha technique is among the most preferred. In our study, simulation of a cognitive radio network environment that consists of primary and secondary users utilizing slotted Aloha medium access technique is performed. The simulation of designed network environment is carried out by using Riverbed software. Upon making end to end delay analysis of the designed network, the results of maximum number of users that could be supported in cognitive radio networks utilizing slotted Aloha technique is observed.

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