METHOD AND TAG FOR BACKSCATTER SIGNAL SYNCHRONIZATION IN BACKSCATTERING COMMUNICATION SYSTEM

摘要

In a backscatter communication using a wireless Wi-Fi signal, when a tag device receives a wireless signal from a wireless AP and transmits backscatter data to a terminal device, the backscatter data is synchronized on a frame- And to a synchronization method for transmitting. The tag device detects the start point of the frame and generates the backscatter data synchronized on a frame-by-frame basis by performing the state change according to the transmission data state, and transmits the generated backscatter data to the terminal device. Therefore, even if the frame transmission period on the wireless AP side is not constant The terminal device can receive the synchronized data to lower the data transmission error, increase the SNR of the received signal by receiving the synchronized signal, and transmit one data symbol per frame, so that high-speed data transmission is possible Do.