Design And Realization Of Direct Sequence Spread Spectrum System Transmitter

This paper studies the design and realization of the direct sequence spread spectrum transmitter based on software radio. Firstly, it introduces the basic principles of spread spectrum communication and the technology of direct sequence spread spectrum, and gives the system models and the design methods. Then this article describes the character of FPGA chips developed by Xilinx corporation and design methods in FPGA, introduces how burr is produced and some ways to restrain it. It elaborates on the study and realization of the system introduced in this paper; gives a general test of the system, at the same time, the paper describes the design of FIR digital filter based on DA algorithm. At last it makes a brief summary of this paper, and indicates the direction of the next step of work.