Review of Design and Implementation of New Software Radio System based on GNU Radio and USRP

This paper provides a comprehensive review of the design and implementation of software-defined radio (SDR) systems based on the GNU Radio platform and Universal Software Radio Peripheral (USRP) hardware in China. The study highlights the evolution of wireless communication technologies, emphasizing the technical advantages of SDR, including flexibility, scalability, interference resistance, and cost-effectiveness. The analysis explores widely used software platforms (GNU Radio and LabVIEW) and hardware peripherals (USRP and HackRF One), comparing their specifications, functionality, and suitability for diverse communication scenarios.A detailed examination of recent Chinese academic research reveals numerous practical implementations, such as adaptive interference cancellation systems, dual-protocol transceivers, spectrum monitoring platforms, visible light communication (VLC) systems, and MIMO-OFDM architectures. These systems leverage the modularity of GNU Radio and the high performance of USRP to address challenges in real-time data processing, spectrum efficiency, and channel interference. Experimental results from case studies demonstrate advancements in packet error rate (PER) reduction, spectral efficiency (up to 10 bit/s/Hz), and interference suppression (e.g., 20 dB self-interference cancellation for full-duplex systems). Challenges such as hardware limitations, environmental interference, and synchronization issues are discussed, alongside proposals for future enhancements, including hardware upgrades, multi-platform integration, and algorithm optimization. The paper underscores the role of open-source SDR frameworks in democratizing wireless innovation while providing critical insights into emerging trends and practical constraints in software radio research.