公开(公告)号：US11664966B2

公开(公告)日：2023-05-30

申请号：US18075430

申请日：2022-12-06

Applicant: ZHEJIANG LAB

Inventor： Changming Zhang ,  Xianbin Yu ,  Xuemin Li ,  Jie Shen

IPC: H04L5/14

CPC classification number: H04L5/1461

Abstract: A co-frequency co-time full duplex (CCFD) signal receiving method includes: taking the sent baseband signal as the self-interference reference signal, reconstructing self-interference, and then performing primary self-interference cancellation on the received signal; processing, by using a timing synchronization loop, the signal after the primary self-interference cancellation, realizing timing recovery at the optimal sampling point of the useful signal through resampling a, and controlling resampling b1 and resampling b2 after performing low-pass filtering on the timing error signal in the timing synchronization loop, to recover the optimal sampling points of the self-interference reference signal and the received signal respectively; and performing joint self-interference cancellation and equalization on the resampled self-interference reference signal and the resampled received signal, and receiving the useful signal through signal demodulation. The above method can significantly enhance the self-interference cancellation capability of CCFD technology and improve the receiving performance of the useful signal.