Design and Implementation of Integrated Localization and Communication System Based on SDR

In view of the current lack of software radio communication and localization integration system, this paper studies and implements the communication and localization integration system based on GNURadio open source platform and USRP Hardware RF board. The main work of this paper includes: (1) using software defined radio (SDR) to realize communication, and master the basic principles of OFDM, communication synchronization and TOA/AOA localization; (2) underlying code of GNURadio open source platform, implement the OFDM communication system based on $\mathbf{C}/\mathbf{C}++$ open source project platform GNURadio, and complete the communication synchronization process based on the synchronization reference signal; (3) The TOA/ AOA location algorithm is deployed based on the reference signal to realize the complete integrated communication and positioning system, and the communication and positioning performance of the system are analyzed. Based on the open architecture, software radio can quickly realize technical verification, and has the advantages of strong flexibility and openness. It is the best choice to realize the integration of communication and positioning.