Research And Simuliation Of OFDM System Based On Xilinx Platform

The wireless communication technique becomes the emphasis of communication research, and along with the wireless communication technique coming into daily life of people, more and more people focus on it." broad band" and "mobility" take on in the development of future communication techniques. To meet the need of high-rate multimedia transmit and realize no block communication, we put forward a more and more high request towards communication system.The third generation of mobile communication will soon come in our life, and then the research of the fourth generation system of has already launched . To be the key technique of the fourth generation communication system, the OFDM technique was subjected to more and more concern and the research. The OFDM is a good technique of multi-carriers. It can resist multi-path fade and selective frequency fade greatly, but its weakness is fatal, that it is sensitive to carrier frequency offset. Author myself make reference to the development of mobile communication, elaborate the basic principle and the key technique of the OFDM system and set up OFDM system under the Xilinx company ISE platform.Chapter 1 Introduction, the introduction about the present condition and development of the mobile communication, carrying on analysis to the technique characteristics of the fourth generation communication system, and summarize the key technique of the forth generation mobile communication. Contrasting single carrier with multi carriers technique, we get their advantages and disadvantages. Then describe the basic thought of OFDM technique. Finally give textual work target and basic request.Chapter 2 the basic principle of OFDM, carry on summary towards wireless channel. At this foundation we elaborate the principle of OFDM and the mathematics model in detail. Give the OFDM the system frame and software imitate finally.Chapter 3 key technique of OFDM system, Carrying on the discussion and research to the technique of the OFDM system, such as synchronous, channel estimate, and Peak-to-Average Power Ratio (PAPR).Then carry on a comparison to various calculate way of synchronously technical. Discuss the technique that associates OFDM with Adapt technique.Chapter 4 OFDM system. Carry on the OFDM hardware imitate, complete the design of transmitter and receiver, Carry on a discussion to the selection of the system parameter and the design of the sign and structure.