Abstract
Anti-interference ability is an important index to evaluate the physical fitness of communication system. Compared with general wireless communication systems, the DS/FH Hybrid spread spectrum system has high security and strong ability of anti-interception. This paper presents a design of DS/TH hybrid spread spectrum system based on FPGA. In the design, direct spread spectrum and frequency hopping spread spectrum of the input data is modulated by the spreading code. In the receiver, the pseudo random sequence is used to despread spread spectrum signal after capturing the sync signal. The simulation of the system is implemented by the combination of the hardware circuit description language Verilog HDL and the principle diagram on Quartus II software in the design.
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