6G Green IoT Network: Joint Design of Intelligent Reflective Surface and Ambient Backscatter Communication

Ambient backscatter communication (AmBC) is one of the candidate solutions for 6G green internet things (IoT) network. However, uncontrollability radio frequency (RF) environment main obstacles hindering popularization AmBC. The intelligent reflective surface (IRS) can improve by adjusting phase and amplitude incident signal, which provides possibility widespread deployment Currently, there no discussion about joint optimization AmBC IRS. In this paper, we introduce a novel IRS design method. purpose method to jointly beamforming vector, shift, reflection coefficient minimize AP’s transmit power while ensuring quality service system primary system. Due nonconvexity problem, time complexity solving problem through exhaustive search will be very high. Therefore, propose based on an iterative power. This effectively reduce transmission access point (AP), simulation results prove effectiveness