Research On Pattern And Synchronization For Frequency-Hopping Communication

Frequency-Hopping (FH) is a novel spread spectrum communication technique, which develops very fast in military field due to its LPI/LPD (Low Probability of Intercept/Detection) properties and immunity against interferences. With development of FH technique, FH communication is widely used in mobile communication and personal communication system. This paper studies the two keys of FH system, one is the pattern, the other is the synchronization. This paper brings forward a method of generating of pseudo random RS code, which is used in FH communication as the frequency-control word, and works out the principle architrave of the system to realize it, and as well analyzes the capability of it. Based on the main requests of FH system, this paper puts forward a synchronization scheme of a middle-speed FH system, which is achieved by using a method combined synchronization-head with time of day (TOD). The performance of synchronization shows that the synchronization of FH communication system makes synchronization time short, capture probability high, false probability low.