基于FPGA的多体制中频数字解调器实现

Realization of an intermediate frequency digital multi-demodulator based on a field-programmable gate array

实现一种基于FPGA的软件无线电多体制解调器,包括正交解调数学模型、FPGA实现方案、测试结果及分析。系统采用一个通用硬件平台和能节省大量硬件资源的模块化的软件设计实现9种解调方式。通过仿真与实际测试,结果正确且工作稳定可靠。

This paper presents a design of an intermediate frequency （IF） multi-demodulator based on a software- defined radio system incorporating a field-programmable gate Array （FPGA）. The mathematical structures of the demodulations, the realization of the program based on FPGA and analysis of the test results are described. The system is based on a common hardware platform and modular software design which results in a considerable saving in hardware resources whilst achieving nine kinds of demodulation mode. The results of actual simulations and tests meet the design requirements for stability and reliability.