公开(公告)号：US09628316B2

公开(公告)日：2017-04-18

申请号：US15010248

申请日：2016-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingwen Yi ,  Cheng Hong ,  Huaping Qing

IPC: H04J14/02 ,  H04L27/26 ,  H04B10/61 ,  H04B10/64

CPC classification number: H04L27/2659 ,  H04B10/615 ,  H04B10/6164 ,  H04B10/64 ,  H04J14/0298 ,  H04L27/26 ,  H04L27/2657 ,  H04L27/2682 ,  H04L27/2697

Abstract: A multi-waveband OFDM receiver and a frequency offset compensation method and system are disclosed. The method includes: performing single waveband frequency offset estimation on an optical comb line of each order; classifying the optical comb lines into a low mutation optical comb line and a high mutation optical comb line; performing joint frequency offset estimation on the low mutation optical comb line; and performing compensation for a frequency offset of a radio frequency drive signal by using an estimated joint frequency offset. The present invention improves accuracy and reliability of the frequency offset estimation of the radio frequency drive signal, so that the degree of the compensation for the frequency offset of the radio frequency drive signal is more comprehensive and accurate.

公开(公告)号：US09614695B2

公开(公告)日：2017-04-04

申请号：US15280046

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu Liu ,  Cheng Hong ,  Meng Cai ,  Hongli Jiang

IPC: H04B7/04 ,  H04L25/03 ,  H04L25/08 ,  H04B1/04 ,  H04L5/00 ,  H04L5/04

CPC classification number: H04L25/03 ,  H04B1/0475 ,  H04B7/0469 ,  H04L5/0048 ,  H04L5/04 ,  H04L25/08

Abstract: The present invention provides a method. The method includes: performing coupling to acquire a first reference signal and a second reference signal from a transmit signal transmitted on a same transmit link at a transmit end; performing signal recombination according to the first reference signal and the second reference signal, to obtain a first interference cancellation signal and a second interference cancellation signal; enabling the first interference cancellation signal to pass through a simulated interference channel, and enabling the second interference cancellation signal to pass through the simulated interference channel; and coupling and output, to a same receive link at the local receive end, the first interference cancellation signal and the second interference cancellation signal that have passed through the simulated interference channel, and combining the first interference cancellation signal and the second interference cancellation signal with a signal received by the local receive end.

公开(公告)号：US20160149742A1

公开(公告)日：2016-05-26

申请号：US15010248

申请日：2016-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingwen Yi ,  Cheng Hong ,  Huaping Qing

IPC: H04L27/26 ,  H04J14/02 ,  H04B10/64 ,  H04B10/61

CPC classification number: H04L27/2659 ,  H04B10/615 ,  H04B10/6164 ,  H04B10/64 ,  H04J14/0298 ,  H04L27/26 ,  H04L27/2657 ,  H04L27/2682 ,  H04L27/2697

Abstract: A multi-waveband OFDM receiver and a frequency offset compensation method and system are disclosed. The method includes: performing single waveband frequency offset estimation on an optical comb line of each order; classifying the optical comb lines into a low mutation optical comb line and a high mutation optical comb line; performing joint frequency offset estimation on the low mutation optical comb line; and performing compensation for a frequency offset of a radio frequency drive signal by using an estimated joint frequency offset. The present invention improves accuracy and reliability of the frequency offset estimation of the radio frequency drive signal, so that the degree of the compensation for the frequency offset of the radio frequency drive signal is more comprehensive and accurate.

Abstract translation: 公开了一种多波段OFDM接收机和频偏补偿方法及系统。 该方法包括：在每个顺序的光梳线上执行单波段频偏估计; 将光梳线分为低突变光梳线和高突变光梳线; 对低突变光梳线进行联合频偏评估; 并通过使用估计的联合频率偏移来对射频驱动信号的频率偏移进行补偿。 本发明提高了射频驱动信号的频偏估计的精度和可靠性，使得射频驱动信号的频偏补偿的程度更全面和准确。