Performance and Analysis of Spectrum Sharing in Cognitive Radio using Common Control Channel

摘要

Spectrum requirement is the biggest issue in the field of communication. Because of new technology and applications expansion bandwidth becomes more crucial. Many methods and techniques are used to solve this problem. One of them is bandwidth sharing cognitive radio technique. This paper shows bandwidth sharing in cognitive radio using common control channel. For this purpose after spectrum sensing, actual work spectrum sharing is done. New secondary user comes into the network and checks spectrum availability by using one of the spectrum sensing techniques, if spectrum is free than spectrum sharing technique assigns available channel to new user without harming existing primary users. This is done through first come first serve bases. Priority is given to the primary users. If existing spectrum band contains secondary users and new primary user comes into the network when no more spectrum band is free then one of the secondary user needs to vacant the band and that spectrum band is allocated to new primary user. In this paper simulation results have been described which gives exact idea of spectrum sharing.