Construction of frequency hopping sequence set with no hit zone

Frequency hopping sequence set with zero collision zone can effectively reduce the multipath interference in the communication and it has extensive application prospect in the quasisynchronous frequency hopping communication system.Two methods of constructing the frequency hopping sequence set with no hit zone are proposed in which the number of sequences and the length of no hit zone can be flexibly changed.All of the parameters consisiting of the number of frequency slot,the length of sequences,the number of sequences,the length of zero collision zone and the hamming correlation values of the frequency hopping sequence set with no hit zone constructed by these methods have reached the theory bound,which result in the optimal frequency hopping sequence set.