Survey of Detector Research Trends for BER Minimization in Ambient Backscatter Communication Systems

Backscatter communication (BackCom) technology is an emerging ultra-low-power communication method that passively scatters/reflects an incident RF signal to transmit data to an intended receiver (Rx). Since no active transmission is required, the power consumption of BackCom devices (tags) is in the microwatt level and the tags can be manufactured very cheaply. These advantages make this technology one of the most competitive tools to support battery-free Internet of Things (BF-IoT). Furthermore, AmBC, one of the types of BackCom, supports flexible deployment and provides better coverage and flexibility by utilizing ambient RF signals without configuring a separate RF signal emitter. In this paper, we survey the recent trends in detector research for BER minimization in AmBC communication.