A prime code family joint interleaving method for coherent fast frequency hopping system

[0078] This embodiment describes the specific implementation of a joint interleaving method of a coherent fast frequency hopping system according to the present invention, and its realization structure schematic diagram is as follows figure 1 shown.

[0079] Depend on figure 1 It can be seen that the sent data enters the source interleaving unit through the source encoding unit to perform source interleaving based on the prime code family matrix, and the source interleaving parameters come from the parameter p sent by the interleaving parameter control unit 1 ; The symbols after source interleaving are modulated by the modulation unit, and the output modulated symbols are sent to the channel coding unit for channel coding. After channel coding, they enter the channel interleaving unit for channel interleaving. The channel interleaving unit uses the parameter p outputted by the interleaving parameter control unit 2 Generate a prime code family matrix, and then perform channel ...

[0082] Specifically in this embodiment, when the single-tone interference-to-interference ratio is lower than 10dB or the narrowband interference-to-signal ratio is lower than 3dB, the frequency hopping unit and the de-frequency hopping unit are not connected to the system.

[0083] When the frequency hopping unit and de-frequency hopping unit are not connected, the corresponding operations in the summary of the invention: step 7 and step 9 are also deleted, and the sequence of other steps is advanced.

[0085] Specifically, when this embodiment is implemented, when the Eb / No is higher than 30dB, the direct spreading unit and the despreading unit are not connected to the system.

[0086] When the direct spreading unit and the despreading unit are deleted, corresponding operations in the summary of the invention: step 6 and step 10 are also deleted, and the sequence of other steps is advanced.