Anti-jamming Scheme Based on Zero Pre-shared Secret in Cognitive Radio Network

Cognitive radio (CR) is a novel technology that promises to improve spectrum efficiency by allowing secondary users (SUs) to dynamically access spectrum without using by primary users. With offering great flexibility and software reconfigurability, unsecured CR can be easily manipulated to attack legacy users on both control and data channels. In this paper, we explore anti-jamming schemes based on zero pre-shared secret key on both control and data channels in cognitive radio networks (CRN). Because of the mobility and variation of users and spectrum, the method of traditional pre-shared secret keys is not applied to CRN. For control channel, we propose a scheme that can counter both external and internal jammers, which guarantees delivery of control information against any coalition of jammers. For data channel, we propose a scheme that uses cryptographically PN sequence to transmit message segments, which is efficient both in terms of resiliency against jammers and computation.