概率整形系统的自适应均衡方法、装置及可读存储介质

    公开(公告)号:WO2023061300A1

    公开(公告)日:2023-04-20

    申请号:PCT/CN2022/124163

    申请日:2022-10-09

    Inventor: 张良俊

    Abstract: 本申请公开了一种概率整形系统的自适应均衡方法、装置及可读存储介质,其中自适应均衡方法包括:确定滤波器的抽头长度并设置均衡器的初始系数(S110);根据所述均衡器的系数对两个偏振态的输入信号进行蝶形滤波,得到两个偏振态的输出信号(S120);根据所述两个偏振态的输出信号计算误差信号,所述误差信号为第一误差和第二误差之和,所述第一误差为目标收敛半径与所述输出信号的模值的平方之差的最小值,所述第二误差为多个所述输出信号的模值的平方的平均值与目标平均功率的差值(S130);根据所述误差信号调整所述均衡器的系数(S140)。

    METHOD FOR LONGITUDINAL PERFORMANCE MONITORING OF AN OPTICAL COMMUNICATION LINE

    公开(公告)号:WO2023040960A1

    公开(公告)日:2023-03-23

    申请号:PCT/CN2022/119028

    申请日:2022-09-15

    Abstract: Systems and methods for longitudinal performance monitoring of an optical communication line communicably connecting a transmitting device to a receiving device for transmitting a signal therebetween. The method comprises receiving the signal at the receiving device, the signal having been affected by propagative impairments accumulated along the optical communication line, generating, at the receiving device, a linear signal based on the received signal, generating, based on the linear signal, a plurality of signal templates, and determining correlation values between the received signal and each signal template of the plurality of signal templates, each correlation value being indicative of a local longitudinal performance of the optical communication line.

    無線通信方法
    3.
    发明申请
    無線通信方法 审中-公开

    公开(公告)号:WO2022269792A1

    公开(公告)日:2022-12-29

    申请号:PCT/JP2021/023755

    申请日:2021-06-23

    Abstract: 収容局装置と、収容局装置の制御に従ってビーム形成を行う基地局装置とを備える無線通信システムにおける無線通信方法であって、収容局装置が、光波長、周波数又は光偏波のいずれかの組み合わせ、あるいは、複数の周波数又は複数の光波長を制御することによって、送信対象となる送信信号に基づいて光信号を強度変調して生成した光変調信号を、光伝送路を介して基地局装置に送信して基地局装置のビームフォーミング制御を行い、収容局装置において電気領域又は光領域で分散補償が行われた後に光変調信号を送信、又は、光伝送路上で光変調信号を分散補償し、基地局装置が、複数の入力ポートを有するビーム形成回路に、分散補償がなされた光変調信号に基づく電気信号を入力することによって、電気信号が入力された入力ポートに応じた方向にビーム形成を行う無線通信方法。 

    LOW-POWER PRE-COMPENSATION OF LINEAR AND NONLINEAR TRANSMITTER EFFECTS IN NARROW-SPECTRUM OPTICAL SIGNALS

    公开(公告)号:WO2022189933A1

    公开(公告)日:2022-09-15

    申请号:PCT/IB2022/051996

    申请日:2022-03-07

    Abstract: A method (1100) comprises generating a set of digital signals (405,406,407,408) representing a constellation point, each dimension of the point being uniquely represented by m bits, where m ϵ {1, 2, 3}; applying (1104) a linear polyphase filter (502) to a digital signal (502) of the set, the linear polyphase filter pre-compensating for a linear transfer function of an electro-optic path of the digital signal and generating a first filtered signal (503) having a roll-off factor α, where α is a positive real number satisfying α ≤ 1; in parallel, applying (1106) a nonlinear polyphase filter (504) to the digital signal, the nonlinear polyphase filter generating a second filtered signal (505) representing nonlinear noise in the electro-optic path; calculating (1108) a pre-compensated digital signal (413,414,415,416,507) from a difference (506) between the first and second filtered signals; and transmitting (1110) an optical signal (204) based on the pre-compensated digital signal.

    DISPERSION COMPENSATION
    6.
    发明申请

    公开(公告)号:WO2020147938A1

    公开(公告)日:2020-07-23

    申请号:PCT/EP2019/050960

    申请日:2019-01-15

    Abstract: In one example aspect, a method is provided of dispersion compensation for an optical link, the method comprising establishing communication using a first symbol rate over the optical link, determining a dispersion compensation for the optical link based on the communication at the first symbol rate, and establishing communication using a second symbol rate over the optical link using the determined dispersion compensation, wherein the second symbol rate is higher than the first symbol rate.

    QUANTUM KEY DISTRIBUTION SYSTEMS HAVING LOW LOSS DISPERSION LIMITING FIBERS

    公开(公告)号:WO2020112347A1

    公开(公告)日:2020-06-04

    申请号:PCT/US2019/060989

    申请日:2019-11-12

    Abstract: A quantum communications system includes a quantum key generation system having a photonic quantum bit generator, a low loss dispersion limiting fiber having a length L, for example greater than 200 km, and a photon detector unit and a communications network having a signal generator, a signal channel, and a signal receiver. The low loss dispersion limiting fiber extends between and optically couples the photonic quantum bit generator and the photon detector unit. Further, the low loss dispersion limiting fiber is structurally configured to limit dispersion at an absolute dispersion rate of about 9 ps/(nm)km or less, and preferably 0.5 ps/(nm)km or less, and induce attenuation at an attenuation rate of about 0.175 dB/km or less such that the quantum key bit information of a plurality of photons output by the one or more photonic quantum bit generators is receivable at the photon detector unit at a bit rate of at least 10 Gbit/sec.

    一种用于WDM-PON中的基于FFP滤波器和FFP-SOA的超窄带谱切分非相干光源的传输装置

    公开(公告)号:WO2017193601A1

    公开(公告)日:2017-11-16

    申请号:PCT/CN2016/113709

    申请日:2016-12-30

    CPC classification number: H04B10/2513 H04J14/02

    Abstract: 本发明公开了一种用于WDM-PON中的基于FFP滤波器和FFP-SOA的超窄带谱切分非相干光源的传输装置,包括中心站,传输光纤,远端节点和光网络终端,所述远端节点通过传输光纤与中心站连接,所述光网络终端与远端节点连接,所述中心站包括依次连接的宽谱非相干光源、FFP滤波器、FFP-SOA、第一级阵列波导光栅、多个光调制器和第二级阵列波导光栅,所述多个光调制器的两端分别与第一级阵列波导光栅和第二级阵列波导光栅连接。经过FFP-SOA放大之后的超窄带谱切分非相干光源可以实现多通道的谱切片非相干光源强度噪声的压缩,有效抑制色散影响,适用于远距离密集波分复用光无源网络(DWDM-PON)通信系统。

    CHROMATIC DISPERSION COMPENSATION
    9.
    发明申请
    CHROMATIC DISPERSION COMPENSATION 审中-公开
    色散补偿

    公开(公告)号:WO2017144187A1

    公开(公告)日:2017-08-31

    申请号:PCT/EP2017/050091

    申请日:2017-01-03

    CPC classification number: H04B10/25133

    Abstract: A device (10;150;200) is configured to receive an optical signal. The device comprises a dispersion compensator (210a) comprising a plurality of optical dispersion compensator units (220). Each optical dispersion compensator unit comprises a plurality of delay elements (20;40). The dispersion compensator (210a) is configured to selectively activate one or more of the optical dispersion compensator units (220). The dispersion compensator (210a) is configured to compensate for dispersion of the optical signal with the activated one or more optical dispersion compensator unit (200).

    Abstract translation: 设备(10; 150; 200)被配置为接收光信号。 该设备包括色散补偿器(210a),其包括多个光学色散补偿器单元(220)。 每个光学色散补偿器单元包括多个延迟元件(20; 40)。 色散补偿器(210a)被配置为选择性地激活一个或多个光学色散补偿器单元(220)。 色散补偿器(210a)被配置为利用激活的一个或多个光学色散补偿器单元(200)来补偿光信号的色散。

    一种色散补偿的方法及装置
    10.
    发明申请

    公开(公告)号:WO2016041325A1

    公开(公告)日:2016-03-24

    申请号:PCT/CN2015/073810

    申请日:2015-03-06

    Inventor: 毛明旺

    CPC classification number: H04B10/2513

    Abstract: 一种色散补偿的方法及装置,该方法包括:采集色散补偿模块在第一预设的色散值下所接收的时域第一信号并变换得到频域第一信号;对频域第一信号进行去噪声及处理,得到第一数据信号的频域能量;调整色散补偿模块的色散值为第二预设的色散值;采集色散补偿模块在第二预设的色散值下所接收的时域第二信号并变换得到频域第二信号;对频域第二信号进行去噪声及处理,得到第二数据信号的频域能量;根据得到的第一数据信号的频域能量和第二数据信号的频域能量对色散补偿模块进行色散补偿调整。通过对扫描信号进行滤波去除噪声处理,实现了色散补偿模块最优色散点的确定,使得整个模块能够正确的工作在最佳色散值下。

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