Determination of Medium Access Probability of Cognitive Radio under Different Fading Channels
Rezwan Ahmad1, Md. Imdadul Islam2, M. R. Amin3
1Rezwan Ahmad, Department of Electronics and Communications Engineering, East West University, Johurul Islam City, Aftabnagar, Dhaka 1219, Bangladesh.
2Md. Imdadul Islam, Department of Computer Science and Engineering, Jahangirnagar University, Dhaka, Bangladesh.
3M. R. Amin, Department of Electronics and Communications Engineering, East West University, Johurul Islam City, Aftabnagar, Dhaka 1219, Bangladesh.
Manuscript received on July 01, 2012. | Revised Manuscript received on July 04, 2012. | Manuscript published on July 05, 2012. | PP: 459-463 | Volume-2, Issue-3, July 2012. | Retrieval Number: C0810062312 /2012©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The correct decision in detecting the presence of the primary users is a vital requirement in cognitive radio network. Incorporation of spatial false alarm makes the derivation of probability of correct decision a difficult task. The previous literature performs the task only for the case of the received signal under Normal distribution of the fading channel. In this paper, we enhance the work for three small scale fading channels: Rayleigh, Rician and Nakagami-m Fading Channels to get the real scenario of a cognitive radio network in an urban area. The impact of fading parameters and sensing range on the profile of probability of correct decision is also investigated to optimize the performance of the network.
Keywords: Cognitive radio, spectrum sensing, spectrum hole, medium access probability, spatial false alarm.