关键词：通信；通信和无线电系统；软件工程；信号处理；无线通信
摘 要：Software-defined radios (SDRs) provide researchers with a powerful and flexible wireless communications experimentation platform. GNU Radio is the most popular open-source software toolkit for deploying SDRs, and is frequently used with the Universal Software Radio Peripheral (USRP). After establishing a USRP testbed, the researcher will need to implement new signal processing algorithms or modify existing ones. This document describes this process, highlighting those details that have received minimal attention in the existing documentation.