扩频数字接收机匹配滤波器的设计与实现

Design and Implementation of Matched Filter for Digital Spread Specturm Receiver

介绍了扩频数字接收机中利用匹配滤波器捕获伪码的原理。就某型号接收机对匹配滤波器的原理进行了理论分析,给出了在FPGA中匹配滤波器的软、硬件设计与算法实现。通过对设计电路的实时仿真表明:该匹配滤波器具有设计合理、捕获精度高、使用灵活方便等特点,可应用于其他扩频系统的数字接收机中。

The principle of using Matched Filter to acquire pseudo-code in digital spread spectrum receiver is introduced in this paper. The principle of Matched Filter for a certain receiver is analysed theoretically. The arithmetic and design of using FPGA is also discussed in detail. It has been proved through the designed circuit simulation that the design is rational, flexible, and conveniently to implement. It can be used in other digital spread spectrum receivers through moderate modification.