Research On And Implementation Of Synchronization Technologies Of High-rate Data Communication Interface Based On OFDM

As the traditional aviation bus can no longer satisfy the requirements of modern high-rate communication system gradually, it is very important for pratical and theoretical vaule to develop a high-rate interface of data communication based on 1553 bus.The kernel technology of this interface is OFDM technology, which is very sensitive to synchronization deviation. So it's indispensible to guarantee the system synchronization for better performance.Firstly, the principle of the OFDM is introduced and the effect of various kinds of synchronization deviation on the system performance is analyzed. The related synchronization schemes are proposed for overcoming various deviation. Secondly, based on the analysis of the transmission standard of Physical Layer for this high-speed data communication interface and channel characterization, the implementation of the system is given.Thirdly, the effect of the various kinds of synchronization deviation on the performance of the system is simulated under our practical working system,which is used to design the scheme of our system.Furthermore,the performance of the system is tested by simulation.Fourthly,the symbol synchronization module is implemented under the platform of the FPGA, in which the stability can be realized by the pipe-line. Simulation results show that not only the symbol timing is completed,but also the hardware resource is saved by using recursion algorithm. Finally,the thesis is concluded by summarizing the whole work.