公开(公告)号：US20230188220A1

公开(公告)日：2023-06-15

申请号：US18153217

申请日：2023-01-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yangjing Wen ,  Yan Cui ,  YuSheng Bai

IPC: H04B10/69 ,  H04B10/2507 ,  H04B10/63 ,  H04B10/61

CPC classification number: H04B10/6972 ,  H04B10/25073 ,  H04B10/63 ,  H04B10/6166

Abstract: An optical receiver that includes an input port configured to receive intensity modulated optical signal with multipath interference (MPI); a detector configured to convert the intensity modulated optical signal with multipath interference to an electrical signal; a high pass filter (HPF) configured to filter the electrical signal and suppress carrier-carrier beat noise induced by the MPI to produce a filtered electrical signal; and an output port configured to transmit the filtered electrical signal.

公开(公告)号：US11283545B2

公开(公告)日：2022-03-22

申请号：US16887915

申请日：2020-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xi Yan ,  Huixiao Ma ,  Wai Kong Raymond Leung ,  Long Luo ,  Yan Cui

IPC: H04L1/00 ,  H03M13/25 ,  H03M7/40

Abstract: Embodiments of this application provide a modulation method and apparatus. The method includes: receiving a code word sequence, where each code word includes N bits, and the code word sequence includes at least a first code word; mapping the code word sequence into M sequences, where each sequence includes N/M bits from the first code word; mapping the M sequences into a symbol sequence, where each symbol is corresponding to M bits, the M bits are respectively from the M sequences, first bits corresponding to N/M first-type symbols are from the first code word, and second bits corresponding to N/M second-type symbols are from the first code word. Thus a signal-to-noise ratio requirement during higher order modulation lowered.

公开(公告)号：US10673563B2

公开(公告)日：2020-06-02

申请号：US16130293

申请日：2018-09-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi Yan ,  Huixiao Ma ,  Wai Kong Raymond Leung ,  Long Luo ,  Yan Cui

IPC: H04L1/00 ,  H03M13/25 ,  H03M7/40

Abstract: Embodiments of this application provide a modulation method and apparatus. The method includes: receiving a code word sequence, where each code word includes N bits, and the code word sequence includes at least a first code word; mapping the code word sequence into M sequences, where each sequence includes N/M bits from the first code word; mapping the M sequences into a symbol sequence, where each symbol is corresponding to M bits, the M bits are respectively from the M sequences, first bits corresponding to N/M first-type symbols are from the first code word, and second bits corresponding to N/M second-type symbols are from the first code word. Thus a signal-to-noise ratio requirement during higher order modulation lowered.

公开(公告)号：US20220247496A1

公开(公告)日：2022-08-04

申请号：US17726197

申请日：2022-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei-ren Peng ,  Yan Cui ,  Yusheng Bai

IPC: H04B10/54 ,  H04B10/61 ,  H04L1/00

Abstract: An apparatus and method for transmitting information bits via an optical communication system, the apparatus including a distribution matcher (DM) configured to receive information bits and to generate shaped symbols relating to the information bits; a pre-deinterleaver (PDI) coupled to the DM and configured to apply a perturbation function q(n) to the shaped symbols to produce pre-deinterleaved symbols; an error reduction processor (ERP) coupled to the PDI and configured to receive computer instructions which, when executed, prompt the ERP to produce error reduction symbols from the pre-deinterleaved symbols, the error reduction symbols being perturbed from the pre-deinterleaved symbols by a perturbation function p(n), q(n) being an inverse of p(n); and a modulator coupled to the ERP and configured to convert the error reduction symbols into optical signals configured for transmission via an optical communication system.

公开(公告)号：US12143155B2

公开(公告)日：2024-11-12

申请号：US17726197

申请日：2022-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei-ren Peng ,  Yan Cui ,  Yusheng Bai

IPC: H04B10/516 ,  H04B10/54 ,  H04B10/61 ,  H04L1/00

Abstract: An apparatus and method for transmitting information bits via an optical communication system, the apparatus including a distribution matcher (DM) configured to receive information bits and to generate shaped symbols relating to the information bits; a pre-deinterleaver (PDI) coupled to the DM and configured to apply a perturbation function q(n) to the shaped symbols to produce pre-deinterleaved symbols; an error reduction processor (ERP) coupled to the PDI and configured to receive computer instructions which, when executed, prompt the ERP to produce error reduction symbols from the pre-deinterleaved symbols, the error reduction symbols being perturbed from the pre-deinterleaved symbols by a perturbation function p(n), q(n) being an inverse of p(n); and a modulator coupled to the ERP and configured to convert the error reduction symbols into optical signals configured for transmission via an optical communication system.