Research On Construction Of No Hit Zone Frequency Hopping Sequence Set And Search Of Frequency Hopping Sequence Pairs Set

Jump to implement frequency hopping communication is the use of carrier spread spectrum is spread spectrum communication technology.FH communication compared with fixed frequency communications, security secrecy is strong, strong concealment so difficult to intercept.Therefore, it is not only in civil communication action, but also played a huge role in military communication.In frequency hopping communication system, request frequency hopping sequence of Hamming correlation function is zero,But according to the theory of frequency hopping sequence is constructed to meet the requirements of very limited.In order to solve this problem, the concept of zero collision zone frequency hopping sequence arises.In this paper the structure of the frequency hopping sequence set for further research.First of all, the basic concept NHZ frequency hopping sequence set were analyzed, and based on a NHZ frequency hopping sequence using interleaving method had obtained NHZ frequency hopping sequence sets which are increased the length and no hit zone length. Sequence sets the parameters obtained by this method can satisfy theorists, is a kind of near-optimal NHZ frequency hopping sequence set.Secondly,based on a NHZ frequency hopping sequence set and cyclically distinct, combined interleaving operation, NHZ frequency hopping sequence sets is obtained, which are expansion the number and length of sequence and the length of no hit zone.Thirdly, define the concept of frequency hopping sequence pairs set,research on the optimal hamming auto-correlation frequency hopping sequence and almost optimal hamming auto-correlation frequency hopping sequence;research on computer search of frequency hopping sequence pairs set.