Load-aware anti-jamming channel hopping design for cognitive radio networks

Abstract

In cognitive radio networks (CRNs), access to unused portions of the licensed spectrum by secondary users renders the system vulnerable to malicious attack. A number of channel hopping schemes with anti-jamming capability have been proposed; however, existing solutions require the pre-sharing of access information or cannot guarantee rendezvous success. Furthermore, existing channel hopping schemes with anti-jamming capability do not consider variations in the traffic loads of different nodes. In this study, we developed a novel anti-jamming scheme, which allows for the dynamic adjustment of the sending/receiving ratio to maximize the throughput of an SU node. The proposed Load Awareness Anti-jamming channel hopping scheme is based on extended Langford pairing. The proposed scheme guarantees rendezvous for any pair of nodes, and was shown in simulations to outperform Sec-CH and Tri-CH in terms of throughput and TTR.