软件无线电中频解调器设计与实现

Design and implementation of IF demodulator based on software radio

实现了一种基于FPGA(field programmable gate arry)的软件无线电中频解调器。该解调器通过控制器设置可实现8种方式解调,并且能在一定范围内设置基带信号速率、滤波器参数和同步系统参数。解调器采用正交模型实现,比分块实现解调节省约80%的FPGA资源。通过仿真与测试,验证了设计的正确性。

An IF demodulator based on software radio in FPGA is implemented.Eight demodulations can be realized meanwhile the parameters can be installed by the controller,including baseband signal rate,parameters of filters and synchronization system.In result of universal quadrature model,80% of resources in FPGA can be less used than blocking method.Simulation and test results are given to illustrate the correctness of the design.