Fgpa To Achieve Magnetic Levitation Train Car To The System Digital Receiver

Based on the in-depth analysis of the vehicle to communication of the maglev train, this dissertation regards the digital receiver of the maglev train as the main study object, using field-programmable logic device (FPGA) ,software-defined radio theory and principles of digital receiver, adopting the means of theoretical analysis, computer simulation and hardware debugging, and gives the realization detail of the digital receiver, the main content of this article is divided into the following four areas:1. Describing the characteristics of digital receiver and giving the basic model of digital receiver, discussing the realization of the key module of the digital down conversion of the digital receiver, expounding the pass band sampling theorem and the diversity combining theory which is involved the theory of the digital receiver;2. Giving two basic models of the digital receiver of the vehicle to communication system of the maglev train, discussing the composition of the modules of two kinds of digital receiver, theory implementation and computer simulation of the modules, proposing a new SNR estimation algorithm and demodulation algorithm with less resource consumption and high precision;3. Giving the FPGA implementation, debugging and problem solving of two kinds of the digital receiver, and giving the functional simulation, resource consumption and system simulation. Simulation results show that, in the case of less consumption of resources, each module can complete their corresponding functions;4. Giving two kinds of overall structure and the performance simulation of system, the results show that architecture of the system can be realized in engineering.