Abstract. Aiming at the problem that the traditional frequency hopping communication in the complex electromagnetic environment is slightly less, this paper proposes applied the Blind Extraction technique in the Frequency Hopping communication. By this way, FH communication can keep the communication in the condition of the communication frequency band being interfered by interference signal. In allusion to the problem of the poor convergence rate, we regard inequality constraints of the operator in the Lagrangian function method as the restart condition of algorithm, which can improve the convergence rate of the algorithm.