A Novel Frequency Hopping Scheme Based on Cognitive Radio for Aircraft

Frequency Hopping (FH) is an important means for anti-jamming in aircraft data link. However, there exists two main weaknesses in existing FH systems, i.e., the low communication resource (frequency, time) utilization rate when there are more than two users in the communication network, and lacking of extra ability to resist spot jamming. In order to cope with these weaknesses, in this paper, we propose a novel frequency hopping scheme based on the spectrum sensing of Cognitive Radio, which increases the resource utilization rate of FH system by allotting resources in real time, while reduces the spot jamming by sensing the communications environment. Considering the high cost of too many resource-allotting, we also propose a novel method which allots resources unevenly as a compromise to get higher resource utilization rate with fewer times of resource-allotting. The BER and other performance metrics of our scheme are studied through comparative simulations.