PCI总线软件无线电接收机系统的实现

Realization of Software Radio Receiver System Based on PCI Bus

软件无线电结构的接收机系统需要高性能、开放、标准的总线支持。针对PCI总线正是一种符合软件无线电要求的总线标准,阐述了一个基于PCI总线的软件无线电接收机系统的软、硬件实现方案。以PCI总线作为系统中ADC板卡、DSP板卡以及其他功能模块之间的数据传输和控制通道,ADC板卡采集到的数据通过PCI总线主控模式高速传输到DSP板卡中进行数字信号处理,实现接收机功能。结果表明,该系统具有结构简单、精度高等优点,并充分体现软件无线电的灵活性和开放性,满足实际应用需求。

The software radio receiver system requires high-powered, open and standard bus to support. Aiming at PCI bus is exactly a bus standard accorded with the requirement of software radio, the hardware and software implementation of a software radio receiver system based on PCI bus is fully described. PCI bus is data transmission and control channel among ADC card, DSP EVM board and other function module in the system. The data acquired by ADC card is rapidly transferred to DSP EVM board with PCI bus master, and then is processed by DSP to implement the receiver function, The results indicate that this system has strongpoints such as simple structure and high precision, fully shows the flexibility and open characteristic of software radio, and meets practical application requirement.