Research On Portable Spread Spectrum System And FPGA Implementation

The CDMA system which is based on technology spread spectrum technology can provide remarkable promotion of system capacity and the quality of communication. According to the special need of military communication such as the portability of device and lower power consumption, this paper studies the transmit and receive system of a kind of portable spread spectrum system and places .The transmit and receive scheme of the system are designed in the paper. The key technologies and algorithms related to the system including the DDC, match correlation, channel estimation, are discussed in detail. Based on the discussion above we implement the function of the FPGA part on the hardware board. After testing the system some related simulation results and test results are presented. The system has the advantages of simple, flexible, low power consumption and scalable.