Performance of Interchangeable Spectrum Sensing Scheduling Algorithm in Multiband Environment

Abstract

Cognitive radio is one of the most important approaches to utilize the radio frequency spectrum efficiently. Cognitive Radio is a promising technology that is potentially will play an essential role of communications in the future. This technology witnesses a rapid growth in the past few years due to the solutions it provides. One of the main issues regarding cognitive radio technology is spectrum-sensing methods. Even though many research efforts were dedicated to improve sensing efficiency, it is considered in the early stages. The novel Interchangeable Spectrum Sensing Scheduling algorithm attempted to improve the sensing efficiency through a cooperative sensing scheme. This thesis conducts throughway prototype to evaluate the performance this algorithm. MATLAB platform was used to simulate the scheduling operation and channel status on different number of band and evaluated in terms of the contribution to reduce the interference with the primary user as well as the opportunity losses .Also Calculated the noise influence on probability of false alarm at noisy environment with specific SNR. In this regards the performance of spectrum sensing was improved when using the different number of bands and different value of SNR.