Adaptive Combined Channel-Network Coding for Cooperative Relay Aided Cognitive Radio Networks

Cognitive radio (CR) is one of the emerging technologies for 4G/5G applications. Cooperative relay communications and network coding are some techniques that helped in enhancing CR This paper considers a primary broadcasting system multimedia video streaming applications broadcasts data to users an aiding cooperative secondary system. The overlay can use many error control point-to-point retransmissions such as channel coding, combined enhance performance under variable conditions. work proposes novel adaptive (AC2NC) technique retransmissions. new AC2NC first analyses feedback information then selects best retransmission based on targeted bandwidth or transmission time optimization. instead using single static with dynamic proposed improves throughput, decreases time, avails more spectrum access opportunities system’s own transmissions. relative saving exceed 90% certain conditions versus techniques.