Phase synchronization method in distributed coherent communication

In this paper, an iterative algorithm for phase synchronization in a distributed coherent transmission is proposed to achieve phase alignment of multiple transmitter signals at the receiver. In each time slot, each transmitter computes and adjusts its phase offset based on the received feedback and its own phase perturbation. Transmitters get the phase change effect near the best known phase adjustment on the received signal power, and guide the phase adjustment in the direction of increasing the received signal power. The simulation results show that the convergence speed of our algorithm proposed in this paper has been increased compared with the classical 1-bit feedback algorithm, and the convergence accuracy and stability are basically the same as those of the classical 1-bit feedback algorithm.