The Research On Digital Receiver Based On Software Radio

The software radio can afford great flexibility andadaptability,so it is widely used in both military andtelecommunication area.This paper focus on hardware andsoftware implementation of digital receivers based on softwareradio.The hardware design is a main task and important part ofthis paper, including the design of DSP hardware platform andADC and DDC module.The hardware part is the basis of the systemand its performance influences the digital receiver'sefficiency.This paper has four parts. First, we introduce the basictheory on software radio and digital signal processing, suchas, band-pass sampling, multi-rate signal processing anddigital down converter. Second, we deal with hardware selectionand design, including DSP,ADC,DDC .And then, software designand optimization is involved. At last, we test the system andhave satisfactory result.