基于FPGA的软件无线电接收机硬件平台的设计

Hardware Design of Software Radio Receiver Based on FPGA

为了使软件无线电硬件平台最大程度地通过软件来实现通信系统的各种功能,节省设计成本,提高系统的处理能力,解决DSP在软件无线电中的瓶颈问题,本设计采用FPGA作为系统的主芯片,构建一个软件无线电接收硬件处理平台。设计完成了A/D采样、数字下变频、数字信号处理等功能,得到了在通信系统中常用的QPSK在该硬件平台上解调的功能仿真结果,说明了该硬件平台设计的正确性,并且具有灵活性高、可重构性强和成本低等特点。

To achieve various functions of communication system by software as far as possible,reduce the cost of design,prove the processing of the system,solve the bottleneck problem of DSP in software radio,the design is based on FPGA to build a hardware processing platform of software radio receiver.The design has completed the functions of A/D converter,digital down conversion,digital signal processing and so on.The design receives the functional simulation result of QPSK,which is used in communication system.The results certify that this design is correct.The system not only improves the flexibility and re-configurability,but also reduces the cost.