Research And Implementation Based On FPGA Of Key Technologies On OFDM In Wideband HF Communication

The research of this thesis is derived from the project named as The TechnologyResearch of a Wideballd HF Data Transmission The aim of the project is to achieveburst data transmission under low SNR condition of wideband HF channel by usinghardware platform of the system The system of a wideband HF OFDM datatransmission is researched in this thesis Then,analysis of the synchronizaion capturetechnology and error control coding technology are emphasized on And these two keytechnologies aye implemented on two different hardware platformsBased on CAZAC sequences,the synchronization capture method is designed inthis thesis,and at the same time the algorithms of judging and computing numericalvalue of the synchronization aye improved Then,the synchronization caprure module,the interface module of FPGA and DSP and the interface module of FPGA and DDC areimplemented by using FPGA hardware logic resources At last．an implementation ofthe entire system based on the DSP&FPGA hardware platform has been put forward,and the resuks show-that all ofthe designs in FPGA are correctFinallly,an even be~er implementation scheme is designed in this thesis TheFPGA development based on NiosII embedded soft-core processor is stressed on,including the SOPC design module of error control coding and interface module ofSOPC and hardware logic Finally,the hardware test results of the error control codingmodule and the interface module are given...