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    • 23. 发明申请
    • RoF system providing HD wireless communication service and signal control method for the same
    • RoF系统提供高清无线通信服务和信号控制方法相同
    • US20080219670A1
    • 2008-09-11
    • US12074999
    • 2008-03-06
    • Sang-Ho KimSeong-Taek HwangYun-Je OhByung-Jik Kim
    • Sang-Ho KimSeong-Taek HwangYun-Je OhByung-Jik Kim
    • H04B10/00H04B10/24
    • H04B10/25758
    • Disclosed is an RoF system providing an HD wireless communication service. The RoF system includes the base station for transmitting and receiving each of the TDD/FDD individual signals and TDD/FDD combined signals, channel-combining downstream signals for a TDD scheme with downstream signals for an FDD scheme, and generating TDD/FDD mode control signals; a base station donor for receiving downstream RF signals from the base station, converting the resultant signals into downstream optical signals, outputting the converted signals, and delivering upstream optical signals, which are input to the remote station from the wireless terminals, to the base station; and the remote station for switching a corresponding duplexing mode operation according to wireless service channel states of the wireless terminals, converting the downstream optical signals transmitted from the base station donor into service RF signals, amplifying the converted service RF signals, and providing the amplified service RF signals to the wireless terminals through antennas.
    • 公开了提供HD无线通信服务的RoF系统。 RoF系统包括用于发送和接收每个TDD / FDD单独信号和TDD / FDD组合信号的基站,用于TDD方案的下行信号与用于FDD方案的下行信号的信道合并,以及生成TDD / FDD模式控制 信号; 用于从基站接收下行RF信号的基站施加器,将所得到的信号转换成下行光信号,输出转换的信号,以及将从远端站输入的上行光信号从无线终端传送到基站 ; 以及远程站,用于根据无线终端的无线服务信道状态切换对应的双工模式操作,将从基站捐赠者发送的下行光信号转换成服务RF信号,放大转换后的服务RF信号,并提供放大服务 RF信号通过天线到无线终端。
    • 24. 发明申请
    • Wavelength-division multiplexing passive optical network
    • 波分复用无源光网络
    • US20060115270A1
    • 2006-06-01
    • US11197176
    • 2005-08-04
    • Sang-Ho KimChang-Sup ShimYun-Je OhSeong-Taek Hwang
    • Sang-Ho KimChang-Sup ShimYun-Je OhSeong-Taek Hwang
    • H04J14/00
    • H04J14/0227H04B10/071H04J14/0226H04J14/0246H04J14/025H04J14/0282
    • A wavelength-division multiplexing passive optical network (WDM-PON) comprising a central office for generating monitor light and multiplexed downstream optical signals to be out and detecting upstream optical signals, the central office including a signal monitoring unit monitoring based on fed-back monitor light if the wavelengths of the upstream optical signals and the wavelengths of the downstream optical signals change, a plurality of subscriber units for detecting corresponding downstream optical signals and generating upstream optical signals, a remote node for reflecting the monitor light to the central office, de-multiplexing multiplexed downstream optical signals so as to output the downstream optical signals to the corresponding subscriber units, and multiplexing the upstream optical signals so as to output the upstream optical signals to the central office, a first optical path for linking the central office to the remote node, and a plurality of second optical paths for linking the remote node to the subscriber units, respectively.
    • 一种波分复用无源光网络(WDM-PON),包括用于产生监控光的中心局和多路复用的下行光信号,以便检测上行光信号,该中心局包括基于反馈监视器的信号监控单元 如果上游光信号的波长和下游光信号的波长发生变化,则用于检测相应的下行光信号并产生上行光信号的多个用户单元,用于将监控光反射到中心局的远端节点 复用下行光信号,以将下行光信号输出到对应的用户单元,并复用上行光信号,以将上行光信号输出到中心局;第一光路,用于将中心局连接到 远程节点和用于li的多个第二光路 将远程节点分别分配给用户单元。
    • 29. 发明申请
    • Transport stream transmission apparatus
    • 传输流传输装置
    • US20050141623A1
    • 2005-06-30
    • US10862610
    • 2004-06-07
    • Jae-Hun ChoSang-Ho KimChan-Yul KimJun-Ho KohYun-Je Oh
    • Jae-Hun ChoSang-Ho KimChan-Yul KimJun-Ho KohYun-Je Oh
    • H04L29/10H04N7/12H04N7/24
    • H04L12/413H04L65/607H04N21/23608H04N21/4344H04N21/43632
    • Disclosed is a transport stream transmission apparatus, for example an MPEG Motion Picture Experts Group)—transport stream transmission apparatus. The transmission apparatus comprising a transmitter including a first media independent interface to generate a data stream, the data stream having a preamble and at least one transport stream, and a first physical layer device to receive a data frame from the first media independent interface, a back plane board to receive the data frame from the transmitter, and enable distribution of the received data frame to individual subscribers, and a second media independent interface to receive at least one transport stream from the second physical layer device, and enable individual subscribers to received transport stream, wherein the second media independent interface includes a second physical layer device to identify a preamble of the data frame received from the back plane board, perform a clock recovery operation, and generate at least one transport stream of the data frame.
    • 公开了传输流传输装置,例如MPEG运动图像专家组) - 传输流传输装置。 传输设备包括发射机,其包括用于生成数据流的第一媒体独立接口,所述数据流具有前导码和至少一个传输流,以及第一物理层设备,用于从所述第一媒体独立接口接收数据帧; 背板接收来自发射机的数据帧,并且使接收到的数据帧能够分配给各个用户;以及第二媒体独立接口,用于从第二物理层设备接收至少一个传输流,并使各个用户能够接收 传输流,其中所述第二媒体独立接口包括第二物理层设备,以识别从所述背板接收的数据帧的前同步码,执行时钟恢复操作,并且生成所述数据帧的至少一个传输流。