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    • 63. 发明申请
    • Optical transceiver for transmitting light source control information and optical network using the same
    • 用于传输光源控制信息和光网络的光收发器
    • US20060120727A1
    • 2006-06-08
    • US11126591
    • 2005-05-10
    • Chul LeeByoung KimEui JungSeung Jang
    • Chul LeeByoung KimEui JungSeung Jang
    • H04B10/00
    • H04J14/0298H04B10/40H04J14/0226H04J14/0247H04J14/0252H04J14/0282
    • An optical transceiver for transmitting light source control information, which is applied to a Subcarrier Multiplexing optical network, is disclosed. The optical transceiver includes a controller, an SCM frame generation/restoring unit, a modulator/demodulator, and an EO/OE converter. The controller controls transmission of light source control information or collects received light source control information. The SCM frame generation/restoring unit generates an SCM frame containing light source control information received from the controller. The modulator/demodulator modulates an SCM frame generated by the SCM frame generation/restoring unit into a signal suitable for transmission. The EO/OE converter converts a transmission signal modulated by the modulator/demodulator into an optical signal and transmits the optical signal through an optical fiber. An optical network having a telephone office OLT and subscriber ONTs, each having the optical transceiver, is also disclosed.
    • 公开了一种用于发送应用于子载波复用光网络的光源控制信息的光收发器。 光收发器包括控制器,SCM帧生成/恢复单元,调制器/解调器和EO / OE转换器。 控制器控制光源控制信息的传输或收集所接收的光源控制信息。 SCM帧生成/恢复单元生成包含从控制器接收的光源控制信息的SCM帧。 调制器/解调器将由SCM帧生成/恢复单元生成的SCM帧调制成适合于传输的信号。 EO / OE转换器将由调制器/解调器调制的传输信号转换为光信号,并通过光纤传输光信号。 还公开了具有电话局OLT和用户ONT的光网络,每个具有光收发器。
    • 64. 发明申请
    • Optical receiver for reducing optical beat interference and optical network including the optical receiver
    • 用于减少光学差拍干扰的光接收机和包括光接收机的光网络
    • US20060098986A1
    • 2006-05-11
    • US11099180
    • 2005-03-30
    • Eui JungByoung KimYong WonSang HanHyun Jung
    • Eui JungByoung KimYong WonSang HanHyun Jung
    • H04B10/00
    • H04B10/66
    • An optical receiver for use in an Optical Network (ON) such as a WPON based on an SCMA scheme. The optical receiver apparatus for use in a Central Office contained in an ON includes: an optical power divider for dividing an input optical signal into first and second optical signals; a frequency generator for generating a oscillation frequency; a phase shifter for shifting a phase of the oscillation frequency; a first optical modulator for modulating the first optical signal with the oscillation frequency; a second optical modulator for modulating the second optical signal with the oscillation frequency phase-shifted; a first photodiode for converting the optical signal modulated by the first optical modulator into a first RF signal; a second photodiode for converting the optical signal modulated by the second optical modulator into a second RF signal; and a differential amplifier for differentially amplifying the first RF signal and the second RF signal.
    • 一种用于光网络(ON)的光接收机,例如基于SCMA方案的WPON。 用于包含在ON中的中心局的光接收装置包括:光功率分配器,用于将输入光信号分成第一和第二光信号; 用于产生振荡频率的频率发生器; 用于移动所述振荡频率的相位的移相器; 第一光调制器,用于以所述振荡频率调制所述第一光信号; 第二光调制器,用于调制具有相移的振荡频率的第二光信号; 第一光电二极管,用于将由第一光调制器调制的光信号转换成第一RF信号; 第二光电二极管,用于将由第二光调制器调制的光信号转换成第二RF信号; 以及用于差分放大第一RF信号和第二RF信号的差分放大器。
    • 67. 发明申请
    • Apparatus for channel equalization and method thereof
    • 信道均衡装置及其方法
    • US20060023799A1
    • 2006-02-02
    • US11178117
    • 2005-07-08
    • Kyong KangWoo KimIn ChoiByoung KimYong Suh
    • Kyong KangWoo KimIn ChoiByoung KimYong Suh
    • H04K1/10H03D1/00H03D1/04
    • H04L25/022H04L25/0212H04L25/03159H04L2025/03496H04L2025/03522H04L2025/03617H04N5/211H04N5/4401
    • Channel Equalization of a digital TV is disclosed. In channel equalization for restoring an original signal from a digital TV reception signal having passed through a channel, the present invention includes estimating an impulse response of the channel from a received signal having passed through the channel using conjugate-gradient algorithm, finding an equalizer coefficient in a frequency domain using the estimated impulse response of the channel, outputting a signal equalized by multiplying a signal resulting from transforming the received signal into the frequency domain by the found equalizer coefficient, and predicting to remove an amplified noise of the equalized signal using the conjugate-gradient algorithm in a time domain. Accordingly, the variation of the channel impulse response according to time can be tracked in the dynamic channel having fast channel variation as well as the static channel, whereby equalizing performance can be enhanced.
    • 数字电视的频道均衡被公开。 在用于从已经通过信道的数字TV接收信号恢复原始信号的信道均衡中,本发明包括使用共轭梯度算法从已经通过信道的接收信号估计信道的脉冲响应,找到均衡器系数 在使用所述信道的所述估计的脉冲响应的频域中,通过将由所述接收信号变换为频域而得到的信号乘以所述均衡器系数,输出均衡的信号,并且使用所述均衡信号来预测去除所述均衡信号的放大噪声 在时域中的共轭梯度算法。 因此,可以在具有快速信道变化的动态信道以及静态信道中跟踪根据时间的信道脉冲响应的变化,从而可以提高均衡性能。
    • 70. 发明申请
    • Optical network termination device for use in passive optical network based on WDM/SCM scheme
    • 基于WDM / SCM方案的无源光网络光网络终端设备
    • US20050135808A1
    • 2005-06-23
    • US10913884
    • 2004-08-05
    • Hyun Ho YunTae KimJeong YooByoung Kim
    • Hyun Ho YunTae KimJeong YooByoung Kim
    • H04L12/28H04B10/20H04B10/24H04J14/02H04Q11/00
    • H04J14/0282H04B10/40H04J14/02H04J14/0227H04J14/0241H04J14/0298H04Q11/0067H04Q2011/0016H04Q2011/0064
    • A termination device for use in a WDM-SCM PON system can effectively support a multi-channel integration function of a WDM/SCM PON system. The termination device contained in a termination end of a WDM/SCM (Wavelength Division Multiplexing/Sub-Carrier Multiplexing) PON (Passive Optical Network) to connect the PON with either a subscriber or an Ethernet service network includes: an Ethernet interface module connected to the Ethernet service network or the subscriber to perform an Ethernet interface function; a WDM/SCM physical layer module physically connected to the WDM/SCM PON to transmit/receive optical signals to/from the WDM/SCM PON; and a MAC (Media Access Control)-bridge module for performing a multiplexing/demultiplexing operation based on a MAC address upon receipt of transmission/reception frames, and reconstructing preambles of the frames while being classified according to channels so that individual Ethernet frames are matching-processed while being classified according to SCM channels of the WDM/SCM physical layer module.
    • 用于WDM-SCM PON系统的终端设备可以有效地支持WDM / SCM PON系统的多信道集成功能。 包含在将PON与用户或以太网业务网络连接的WDM / SCM(波分复用/子载波复用)PON(无源光网络)的终端中的终端设备包括:以太网接口模块,连接到 以太网业务网络或用户执行以太网接口功能; WDM / SCM物理层模块,物理上连接到WDM / SCM PON以向/从WDM / SCM PON发送/接收光信号; 以及MAC(媒体访问控制) - 桥接模块,用于在接收到发送/接收帧时基于MAC地址执行复用/解复用操作,并且在根据信道分类的同时重构帧的前同步码,使得各个以太网帧匹配 在根据WDM / SCM物理层模块的SCM通道进行分类的过程中。