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通用数字下变频器被越来越广泛的应用到各种无线通信设备和测试测量仪器,以及电子对抗、雷达和信息化家电等领域。近年来现场可编程门阵列(FPGA)器件和DSP在芯片逻辑规模和处理速度等方面的迅速提高,用硬件编程或软件编程方式实现软件无线电技术在理论和实用化上都趋于成熟和完善。软件无线电技术只需通过软件上的更新就能够选择不同的业务或调制方式、追加和修改功能,具有传统硬件方式所无法比拟的灵活性、开放性和可扩展性。因此,软件无线电技术已经被越来越广泛地应用于蜂窝通信及各种军用和民用的无线系统中。
Universal digital down converter is more and more widely used in a variety of wireless communications equipment and test and measurement instruments, as well as electronic warfare, radar and information appliances and other fields. In recent years, field programmable gate array (FPGA) devices and DSPs have been rapidly increasing in logic scale and processing speed of chips, and software and radio technologies have become mature and perfect both in theory and in practice through hardware programming or software programming. Software radio technology through the software update can choose different business or modulation, add and modify functions, with traditional hardware methods unmatched flexibility, openness and scalability. Therefore, software radio technology has been increasingly used in cellular communications and various military and civilian wireless systems.