CHANNEL PARAMETERS ANALYSIS USING COGNITIVE RADIO WIRELESS SENSOR NETWORK (CR-WSN) FOR WIRELESS COMMUNICATION

摘要

Wireless communication ensures well-organized spectrum utilization. It uses various resources allocation such as channel, frequency, bandwidth, etc., to make communication swiftly and easier. Cognitive Radio (CR) is an emerging technology that deals with the challenges to facilitate a feasible access to the spectrum. Hence, data losses and delay are the main issues in the Cognitive Radio Network (CRN). Many protocols and algorithms have been proposed, although the issues have not yet been completely addressed. Cognitive radio allows utilizing unused spectrum, so we have to check if it uses channel estimation techniques. Cognitive Radio Wireless Sensor Network (CR-WSN) coupled with cooperative communication minimizing the time delay for users. In this work, spectrum sensing and spectrum sharing is used to solve the problem of resource allocation and to ensure better management. Another method used in CR to improving wireless communication is Road Side Units (RSUs), which have limited coverage area and high deployment cost. The opportunistic encounters between mobile nodes increases the data transfer rate by carrier sensing and chunk scheduling using hand over process. Our objective is to control the data loss and increase the signal strength. A new approach is proposed in mobile node through carry and forward transfers to minimize the time delay and it is implemented by NS2 tool.