Orthogonal Frequency Division Multiple Access Based Virtual Passive Optical Network (VPON)
    81.
    发明申请
    Orthogonal Frequency Division Multiple Access Based Virtual Passive Optical Network (VPON) 审中-公开
    基于正交频分多址的虚拟无源光网络(VPON)

    公开(公告)号:US20090092394A1

    公开(公告)日:2009-04-09

    申请号:US12207664

    申请日:2008-09-10

    Applicant: Wei Wei Ting Wang

    Inventor: Wei Wei Ting Wang

    CPC classification number: H04J14/0282

    Abstract: Various types of passive optical networks operate simultaneously in one passive optical network system comprising an optical line terminal, a passive remote node, and multiple optical network units. Downstream data is orthogonal frequency division multiplexed onto a single wavelength optical carrier transmitted on a primary downstream optical beam from the optical line terminal to a splitter in the passive remote node. The primary downstream optical beam is split into multiple secondary downstream optical beams; each is transmitted to a specific optical network unit. Upstream data is orthogonal frequency division multiplexed onto a single wavelength optical carrier transmitted on a secondary upstream optical beam from each optical network unit to a coupler in the passive remote node. The upstream wavelength for each optical network unit is different. The wavelength division multiplexed optical beam is transmitted from the passive remote node to a parallel signal detector in the optical line terminal.

    Abstract translation: 在包括光线路终端,被动远程节点和多个光网络单元的一个无源光网络系统中,各种类型的无源光网络同时工作。 下行数据被正交频分复用到在从光线路终端到被动远程节点中的分路器的主下游光束上传输的单个波长光载波上。 主下游光束被分成多个次级下游光束; 每个被发送到特定光网络单元。 上行数据被正交频分复用到在从每个光网络单元到被动远程节点中的耦合器的第二上行光束上传输的单个波长光载波上。 每个光网络单元的上行波长不同。 波分复用光束从无源远端节点传输到光线路终端中的并行信号检测器。

    VIRTUAL I/Q MULTIPLEXING IN OPTICAL CODE DIVISION FOR SECURE LOCAL AREA OFDM
    82.
    发明申请
    VIRTUAL I/Q MULTIPLEXING IN OPTICAL CODE DIVISION FOR SECURE LOCAL AREA OFDM 审中-公开
    用于安全的本地区域的光学代码段的虚拟I / Q多路复用OFDM

    公开(公告)号:US20090092392A1

    公开(公告)日:2009-04-09

    申请号:US12181656

    申请日:2008-07-29

    Abstract: A system and method for virtual I/Q multiplexing in optical code division for secure local area OFDM includes encoding a wide spectrum signal, which includes a plurality of spectral bins, to provide a complementary spectral coding over at least two channels. The complementary spectral codings are intensity modulated with opposite polarity for each channel. An M-ary Orthogonal Frequency Division Multiplexing (OFDM) signal is modulated using the complementary spectral codings of opposite polarity with separate complementary spectral encoded (CSE) optical codes to provide a virtual in-phase (I) and quadrature (Q) (I/Q) multiplexing for the OFDM signal.

    Abstract translation: 用于安全局域OFDM的光码分区中的虚拟I / Q复用的系统和方法包括对包含多个频谱区的宽频谱信号进行编码,以在至少两个信道上提供互补的频谱编码。 对于每个通道,互补的频谱编码是以相反极性强度调制的。 使用具有相反极性的互补频谱编码,使用单独的互补频谱编码(CSE)光码来调制M正交频分复用(OFDM)信号,以提供虚拟同相(I)和正交(Q)(I / Q)复用为OFDM信号。

    Interference detecting circuit utilizing synchronization symbols and method thereof
    84.
    发明授权
    Interference detecting circuit utilizing synchronization symbols and method thereof 有权
    利用同步符号的干扰检测电路及其方法

    公开(公告)号:US07460147B2

    公开(公告)日:2008-12-02

    申请号:US11160553

    申请日:2005-06-28

    CPC classification number: H04N5/211 H04N5/4401

    Abstract: An interference detecting circuit for use in an ATSC system and for detecting interference of an ATSC signal includes: a buffering module for delaying to output a first PN63 synchronization format data when receiving the first PN63 synchronization format data; a correlation arithmetic circuit coupled to the buffering module for receiving the ATSC signal and performing a correlation operation on a second PN63 synchronization format data and the delayed first PN63 synchronization format data to output a detection signal when receiving the second PN63 synchronization format data; and a determining circuit for determining whether performing interference rejection on the ATSC signal or not according to the result of the above-mentioned correlation operation.

    Abstract translation: 用于ATSC系统并用于检测ATSC信号的干扰的干扰检测电路包括:缓冲模块,用于在接收到第一PN63同步格式数据时延迟输出第一PN63同步格式数据; 耦合到所述缓冲模块的相关运算电路,用于接收所述ATSC信号,并且对第二PN63同步格式数据和所述延迟的第一PN63同步格式数据执行相关操作,以在接收到所述第二PN63同步格式数据时输出检测信号; 以及确定电路,用于根据上述相关操作的结果确定是否对ATSC信号执行干扰抑制。

    Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation
    88.
    发明申请
    Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation 审中-公开
    符号间干扰抑制无色DPSK解调

    公开(公告)号:US20080240736A1

    公开(公告)日:2008-10-02

    申请号:US11692432

    申请日:2007-03-28

    CPC classification number: H04B10/677

    Abstract: An optical device includes an interferometer for a received optical differential phase shift keying DPSK signal, and an equalizer integrated with the interferometer in a manner for reducing from optical filtering effects an interference by signal bits of the DPSK signal with signal bits of a contiguous DPSK signal. The interferometer is a Michelson delay interferometer type, but can also be a Mach-Zehnder delay interferometer type on fiber, waveguide or other optical structure. The equalizer is a Fabry-Perot type equalizer, but can be a ring resonator type or a fiber based equalizer.

    Abstract translation: 光学装置包括用于接收的光学差分相移键控DPSK信号的干涉仪,以及与干涉仪集成的均衡器,以减少光学滤波的方式,利用DPSK信号的信号位与相邻DPSK信号的信号位的干扰 。 干涉仪是迈克尔逊延迟干涉仪型号,但也可以是光纤,波导或其他光学结构上的马赫 - 曾德延迟干涉仪。 均衡器是法布里 - 珀罗型均衡器,但可以是环形谐振器型或基于光纤的均衡器。

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