Implementation Of Key Algorithm In Wideband HF Communication System Based On FPGA

The spread spectrum technology has anti-frequency selective fading, resisting multi-path interference, hidden good performance and many other advantages that if applied to HF communications, will meet the requirements of military communications. This thesis discussed the wideband HF communication system at the core of spread spectrum technology, and implemented its digital parts on FPGA, according to the thinking of software radio.This thesis introduced the basic knowledge of HF communications, software radio and spread spectrum technology, and analyzed the structure and realization principle of the HF wideband communication systems; then considering the different characteristics of algorithm of each module in the system, implemented the system through FPGA hardware logic resources and NiosII embedded soft-core processor, and gave a detailed block diagram of structure and simulation results; finally, the thesis also gave hardware test results of the system in the FPGA development board.