• Ashish Kumar Chouhan
• Dr Sanjeev Kumar Gupta
• Ankit Pandit

The current and rapid development of wireless technologies (WiFi, WiMAX, UMTS, etc.) has resulted in a strong demand for spectral resources so much that current bandwidth (spectrum) management techniques have reached their limit and are not being used optimally. To overcome this problem, good spectrum management is required and therefore more efficient use of the spectrum is required. Cognitive radio is a system that allows terminals to interact with their environment. This allows free frequencies to be recognized and used and thus contributes to better spectral efficiency. Cognitive radio (CR) is an intelligent radio device that explores the radio environment, makes decisions, and can be tuned to optimize spectrum use or other criteria such as the efficiency of a communication system. This development, inevitable in the modern world of radio communication, allows communication devices, which have become more autonomous, to choose the best communication conditions. This paper presents resource allocation in cognitive radio and its challenges in the field of radio communications, its functions as well as important notions concerning its architecture and its operating principle. Its basic functionalities allow it to detect the spectrum while avoiding interference while capturing the best available frequencies. Thanks to artificial intelligence, the cognitive radio allows the user to adapt to any spectral conditions. It multitasks using its many components, format, and the cycle of cognition that aids it in making decisions about spectral occupancy.

AI, CR, CRN, DAI, GA, MAS, NC-OFDM, Resource Allocation

"Resource Allocation in Cognitive Radio Networks: A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.25-32, June-2019, Available :http://www.jetir.org/papers/JETIR1908E04.pdf

"Resource Allocation in Cognitive Radio Networks: A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp25-32, June-2019, Available at : http://www.jetir.org/papers/JETIR1908E04.pdf