A Phase Error Elimination Method in Asynchronous Communication System

Abstract

Previous ranging or localization systems achieve an accurate time of flight (TOF) estimation based on strict time synchronization between transmitter and receiver, which is difficult to realize in a practical communication system. To tackle this problem, we propose a phase error elimination method to achieve accurate ranging in an asynchronous manner. We implement the proposed method using a software radio platform, and the real experimental results show that the proposed method can achieve a ranging accuracy of 5.6 cm,