Co-frequency co-time full duplex (CCFD) signal receiving method

    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

    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.

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