数字相关器的FPGA实现

The FPGA Implementation of Digital Correlator

相关器是扩频系统的关键部分。采用软件无线电技术实现的数字相关器具有灵活性、稳定性和方便调试的优点。文章介绍了数字相关器的相关知识,给出了软件仿真的结果,同时描述了基于FPGA实现数字相关器的方法,给出了实际测试得到的相关峰值。该模块最终的测试结果满足设计需要,用于扩频接收机系统中。

Correlator is the key part of the spread spectrum communication system. The digital eorrelator which adopts software radio technology has the merits of flexibility, stability and convenient to debug. In this paper, the correlate knowledge of digital correlator and the result of simulation is introduced, at the same time, the method to realize the digital eorrelator based on FPGA is given, and the peak value by practical test is also shown. The testing results of this module satisfy the need of design and are already used in the spread spectrum communication system.