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    • 3. 发明授权
    • ROF link apparatus capable of stable TDD wireless service
    • 能够稳定TDD无线服务的ROF链路装置
    • US07733825B2
    • 2010-06-08
    • US11514440
    • 2006-09-01
    • Sang-Ho KimYun-Je OhSeong-Taek HwangByung-Jik KimGyu-Woong LeeHoon KimSung-Kee KimHan-Lim LeeJae-Hoon LeeYong-Gyoo KimDae-Eun Choi
    • Sang-Ho KimYun-Je OhSeong-Taek HwangByung-Jik KimGyu-Woong LeeHoon KimSung-Kee KimHan-Lim LeeJae-Hoon LeeYong-Gyoo KimDae-Eun Choi
    • H04W4/00H04L12/56
    • H04W88/085
    • A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an antenna.
    • 能够对TDD时基双工(TDD)基带信号进行稳定的TDD无线业务的无线电光纤(ROF)链路装置包括用于从上层接收包括TDD基带信号的各种数据的中央接入平台(CAP) 数据,电光转换多路复用数据,并通过光纤将转换后的数据作为下行数据发送,并对通过光纤接收的上行数据进行光电转换,对转换的上行数据进行解复用,并将解复用的上行数据发送到 各自的上层以及用于通过光纤接收下游数据的远程访问单元(RAU),将接收到的下游数据光电转换为多路复用数据,解复用多路复用数据,执行解复用数据的无线接入处理 ,并将无线接入处理的数据发送到无线局域网(WLAN)服务 e端子通过天线。
    • 6. 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。
    • 7. 发明授权
    • 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
    • US08417116B2
    • 2013-04-09
    • 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相应的双工模式操作,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。
    • 10. 发明授权
    • Bit-rate-independent optical cross-connect device in optical transmission system
    • 光传输系统中的比特率独立光交叉设备
    • US06944405B2
    • 2005-09-13
    • US09953637
    • 2001-09-17
    • Han-Lim LeeByung-Jik KimJun-Ho KohSeong-Taek HwangYun-Je Oh
    • Han-Lim LeeByung-Jik KimJun-Ho KohSeong-Taek HwangYun-Je Oh
    • H04B10/00H04B10/27H04Q3/52H04Q11/00H04Q11/04H04B10/08H04B17/00
    • H04Q11/0005H04Q2011/0016H04Q2011/0024H04Q2011/0039H04Q2011/0045
    • This invention provides an optical transmission with a demultiplexer for demultiplexing an input optical signal into optical signals of different channels and a multiplexer for multiplexing the optical signals outputted from the demultiplexer. The optical cross-connect device includes: N BICDR (Bit Rate Independent Clock and Data Recovery) receivers each for receiving the associated optical signals outputted from the demultiplexer, for converting the associated optical signal into an electrical signal and reproducing clocks and data based on the bit rate of the electrical signal; a switchboard with a cross-connect switch for receiving output signals from the respective N BICDR receiver; N bit rate discriminating units for receiving the output signals from the N BICDR receivers, respectively, thereby outputting bit rate discriminating signals associated with the N BICDR receivers, respectively; a temperature sensing unit for outputting a temperature sensing signal; and, a central processing unit for receiving the bit rate discriminating signals from the N bit rate discriminating unit, along with the temperature sensing signal from the temperature sensing unit, for compensating each of the received bit rate discriminating signals with a temperature-dependent bit rate value read out, based on the temperature sensing signal, from a memory, and for controlling the bit rate of the associated BICDR receiver based on the compensated bit rate.
    • 本发明提供了一种具有解复用器的光传输器,用于将输入光信号解复用为不同信道的光信号,以及复用器,用于复用从解复用器输出的光信号。 光交叉设备包括:N个BICDR(比特率独立时钟和数据恢复)接收机,每个接收器用于接收从解复用器输出的相关联的光信号,用于将相关联的光信号转换成电信号,并基于该信号再现时钟和数据 比特率的电信号; 具有交叉连接开关的交换机,用于接收来自相应N BICDR接收机的输出信号; N比特率鉴别单元,用于分别从N个BICDR接收机接收输出信号,从而分别输出与N个BICDR接收机相关联的比特率鉴别信号; 用于输出温度感测信号的温度检测单元; 以及用于从温度感测单元接收来自N比特率鉴别单元的比特率鉴别信号的中央处理单元,用于以温度依赖比特率对每个接收的比特率鉴别信号进行补偿 基于温度感测信号从存储器读出,并且用于基于补偿的比特率来控制相关联的BICDR接收器的比特率。