随着无线通信技术的高速发展,需要对大量的信号及数据进行高效、快速、可操作性更高且相对低成本的处理,这便对无线通信系统提出了更高的要求.软件定义无线电(Software Defined Radio,SDR)是一种软硬结合的无线电广播通信技术,它使用软件来调节无线通信使用的硬件参数,而非通过修改硬件元器件实现.频带、空中接口协议和功能都可以通过软件下载和更新来升级,而不用反复更换硬件.笔者在开源SDR平台HackRF和免费的开源软件无线电开发平台工具GNURadio的基础上,通过软硬件强大的信号处理功能在PC端对HackRF开发板的信号进行编解码、调制解调、时频域变换等处理,实现更为广泛的应用.%With the rapid development of wireless communication technology, a large number of signals and data are required to be handled efficiently, fast, operable and relatively low cost, which puts forward higher requirements for the wireless communication system. Software Defined Radio (SDR) is a soft and hard combined radio broadcasting communication technology, which uses software to regulate the hardware parameters of wireless communication, rather than by modifying the hardware components. The frequency band, air interface protocol and function can be upgraded by software downloading and updating, instead of changing hardware repeatedly. On the basis of the open source SDR platform HackRF and the free open source software radio development platform tool GNURadio, the author uses the powerful signal processing function of the hardware and software to codec, modulate and demodulate the signal of the HackRF development board at the PC end, and achieve a more extensive application.
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