Fifth- generation communication also known as internet of things is rolling out worldwide. It has provided higher network capacity and speed for mobile broadband communications; however, 5G network focuses only on terrestrial coverage. 6G and Cognitive Radio (CR) is expected to be the future solution to all heavy data traffic and globe coverage. Satellite communication is anticipated to cover rural areas, sea, spanning air, and space in what is known as Internet of Space Things (IoST). Low Earth Orbit (LEO) CubeSat orbits earth provide real time measurements with low transmission power and high data rate. Cognitive radio will focus on providing efficient spectrum use and resources allocations. In this paper, a multi CubeSat cognitive radio network is proposed to improve time delay, increase data exchange, and increase the Signal to Noise Ratio (SNR) of the communication system. simulation results demonstrate the convergence of the multi CubeSat system improving the signal to noise ratio for different number of CubeSats structure.

Keywords
CubeSat, Cognitive Radio, Internet of Space, Spectrum.

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