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20 条记录 (耗时 0.016 秒)

    Rate matching apparatus and rate matching method thereof
    1.
    发明授权
    Rate matching apparatus and rate matching method thereof 有权
    速率匹配装置及其速率匹配方法

    公开(公告)号：US08555133B2

    公开(公告)日：2013-10-08

    申请号：US13020143

    申请日：2011-02-03

    申请人： Dae Soon Cho ,  EunTae Kim ,  Hee Sang Chung ,  JungSook Bae ,  Daeho Kim

    发明人： Dae Soon Cho ,  EunTae Kim ,  Hee Sang Chung ,  JungSook Bae ,  Daeho Kim

    IPC分类号： H03M13/00

    CPC分类号： H04L1/0067 ,  H04L1/0071

    摘要： Provided is a rate matching apparatus. The rate matching apparatus includes interleavers, dummy bit removers, a bit collector, a memory and a selector. The interleavers interleave code blocks, respectively. The dummy bit removers remove dummy bits of the interleaved code blocks, respectively. The bit collector collects code blocks with the dummy bits removed by bit units, and divides a collected data bit stream into systematic data and parity data. The memory stores the systematic data and the parity data in parallel. The selector outputs in parallel a plurality of data bits which are selected from the systematic data and parity data of the memory.

    摘要翻译： 提供了一种速率匹配装置。 速率匹配装置包括交织器，伪位去除器，位收集器，存储器和选择器。 交织器分别交替代码块。 虚拟位去除器分别去除交织代码块的虚拟位。 位收集器采集通过位单元去除虚拟位的代码块，并将收集的数据位流分成系统数据和奇偶校验数据。 存储器并行地存储系统数据和奇偶校验数据。 选择器并行输出从存储器的系统数据和奇偶校验数据中选择的多个数据位。

    DERATE MATCHING METHOD AND APPARATUS
    2.
    发明申请
    DERATE MATCHING METHOD AND APPARATUS 有权
    DERATE匹配方法和设备

    公开(公告)号：US20100158053A1

    公开(公告)日：2010-06-24

    申请号：US12544645

    申请日：2009-08-20

    申请人： Eun Tae KIM ,  Dae Soon CHO ,  Hee Sang CHUNG ,  Hyeong Jun PARK

    发明人： Eun Tae KIM ,  Dae Soon CHO ,  Hee Sang CHUNG ,  Hyeong Jun PARK

    IPC分类号： H04J3/04

    CPC分类号： H04L1/0052 ,  H04L1/0067 ,  H04L1/0071

    摘要： Provided are a method and apparatus for derate matching a rate-matched data. The received data is deinterleaved and derate matched at a time, without using input buffers or constructing input buffers in parallel. Thus, a total process time necessary for the deinterleaving process and the derate matching process is reduced, and the use of memories such as the input buffers is minimized.

    摘要翻译： 提供了一种降低匹配速率匹配数据的方法和装置。 接收到的数据一次被解交错和降额匹配，而不使用输入缓冲器或并行构建输入缓冲器。 因此，减少解交织处理和降额匹配处理所需的总处理时间，并且使诸如输入缓冲器的存储器的使用最小化。

    Optical transmission line monitoring system using a gain clamped optical amplifier
    3.
    发明授权
    Optical transmission line monitoring system using a gain clamped optical amplifier 失效
    光传输线路监控系统采用增益钳位光放大器

    公开(公告)号：US07440695B2

    公开(公告)日：2008-10-21

    申请号：US10968308

    申请日：2004-10-18

    申请人： Han Hyub Lee ,  Donghan Lee ,  Hee Sang Chung ,  Kwangjoon Kim

    发明人： Han Hyub Lee ,  Donghan Lee ,  Hee Sang Chung ,  Kwangjoon Kim

    IPC分类号： H04B10/08

    CPC分类号： H04B10/071 ,  G01M11/3145

    摘要： There are provided a method and system for monitoring an optical transmission line. The system for monitoring the optical transmission line includes: an OTDR (optical time-domain reflectometer) transmitting a monitoring light to an optical transmission line, measuring a reflected light or backscattered light to monitor the optical transmission line; an optical amplification unit amplifying the monitoring light transmitted on the optical transmission line by using a gain clamped optical amplifier; and a filter unit removing a component having a wavelength outside a wavelength band of the monitoring light from a backward ASE (amplified spontaneous emission) generated by the optical amplification unit. Accordingly, it is possible to extend an optical transmission line monitoring distance of the OTDR. As a result, it is possible to prevent deterioration of the performance of the OTDR because of the backward ASE.

    摘要翻译： 提供了一种用于监测光传输线的方法和系统。 用于监测光传输线路的系统包括：将光监测光传输到光传输线的OTDR（光时域反射计），测量反射光或反向散射光以监测光传输线; 光放大单元，通过使用增益钳位光放大器来放大在光传输线上传输的监视光; 以及滤光器单元，从由光放大单元产生的反向ASE（放大的自发发射）去除具有监测光的波长带外的波长的分量。 因此，可以延长OTDR的光传输线监视距离。 结果，可以防止由于向后的ASE而导致OTDR的性能的恶化。

    Long-wavelength-band gain-controlled optical amplifier
    6.
    发明授权
    Long-wavelength-band gain-controlled optical amplifier 有权
    长波长带增益控制光放大器

    公开(公告)号：US07158288B2

    公开(公告)日：2007-01-02

    申请号：US10896347

    申请日：2004-07-20

    申请人： Han Hyub Lee ,  Donghan Lee ,  Hee Sang Chung ,  Hyun Jae Lee

    发明人： Han Hyub Lee ,  Donghan Lee ,  Hee Sang Chung ,  Hyun Jae Lee

    IPC分类号： H01S3/00

    CPC分类号： H04B10/296 ,  H01S3/0064 ,  H01S3/067 ,  H01S3/0677 ,  H01S3/094023 ,  H01S3/0941 ,  H01S3/1608

    摘要： A long-wavelength band (L-band) optical amplifier capable of maintaining a gain constant, thereby providing a stable optical output even when an optical power or a wavelength of a signal input thereto changes. The optical amplifier includes an amplifier which amplifies an input signal, and an amplified spontaneous emission (ASE) reflector which reflects backward ASE generated by the amplifier so that the backward ASE is fed back to the amplifier.

    摘要翻译： 即使当光功率或输入信号的波长发生变化时，能够保持增益恒定的长波长带（L波段）光放大器，从而提供稳定的光输出。 光放大器包括放大输入信号的放大器和放大的自发发射（ASE）反射器，其反射由放大器产生的反向ASE，以使反向ASE反馈到放大器。

    Optical packet header processing apparatus for optical packet switch
    7.
    发明授权
    Optical packet header processing apparatus for optical packet switch 有权
    用于光分组交换的光分组报头处理装置

    公开(公告)号：US06559989B1

    公开(公告)日：2003-05-06

    申请号：US09499934

    申请日：2000-02-08

    申请人： Kwang Joon Kim ,  Ji Wook Youn ,  Hee Sang Chung ,  Sung Un Lee ,  Jong Hyun Lee

    发明人： Kwang Joon Kim ,  Ji Wook Youn ,  Hee Sang Chung ,  Sung Un Lee ,  Jong Hyun Lee

    IPC分类号： H04J1408

    CPC分类号： H04Q11/0005 ,  H04J14/08 ,  H04Q2011/0041

    摘要： An optical packet header processing apparatus for processing a header of an optical packet expressing an address of a destination node to control a switching operation of an optical packet switch. The optical packet header processing apparatus comprises a beam splitter for splitting the optical packet header into a predetermined number of optical packet header elements, and a plurality of time interval detectors. Each of the time interval detectors receives a corresponding one of the optical packet header elements from the beam splitter and outputs a detect optical pulse if a pair of optical pulses having a predetermined time interval therebetween are present in the received optical packet header element. A plurality of optical pulse detectors are adapted to convert the detect optical pulses from the time interval detectors into electrical signals and transfer the converted electrical signals to the optical packet switch, respectively. Therefore, the optical packet switch determines the destination node in response to the electrical signals from the optical pulse detectors and outputs the optical packet to an output port corresponding to the determined destination node.

    摘要翻译： 一种光分组报头处理装置，用于处理表示目的地节点的地址的光分组的报头以控制光分组交换机的切换操作。 光分组报头处理装置包括分光器，用于将光分组报头分割成预定数量的光分组报头元素，以及多个时间间隔检测器。 每个时间间隔检测器从分束器接收相应的一个光分组报头元件，并且如果在接收的光分组报头元件中存在其间具有预定时间间隔的一对光脉冲，则输出检测光脉冲。 多个光脉冲检测器适于将来自时间间隔检测器的检测光脉冲转换为电信号，并将转换后的电信号分别传送到光分组交换机。 因此，光分组交换机响应于来自光脉冲检测器的电信号来确定目的地节点，并将光分组输出到与确定的目的地节点对应的输出端口。

    Automatic gain-controlled optical fiber amplifier
    8.
    发明授权
    Automatic gain-controlled optical fiber amplifier 失效
    自动增益控制光纤放大器

    公开(公告)号：US06529319B2

    公开(公告)日：2003-03-04

    申请号：US09827211

    申请日：2001-04-06

    申请人： Ji-Wook Youn ,  Kwang-Joon Kim ,  Hee-Sang Chung ,  Jong-Hyun Lee

    发明人： Ji-Wook Youn ,  Kwang-Joon Kim ,  Hee-Sang Chung ,  Jong-Hyun Lee

    IPC分类号： H04B1012

    CPC分类号： H01S3/06754 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S2301/04

    摘要： The present invention is to provide an automatic gain-controlled optical fiber amplifier, comprising: a first optical branch for branching a portion of an optical signal inputted into the optical fiber amplifier; a second optical branch for branching a portion of an optical signal outputted from the optical fiber amplifier; an optical distributor for receiving the optical signal of an input side branched partially by the first optical branch and for outputting it separately; a first wavelength selector for receiving the optical signal of a one side distributed by the optical distributor and for selecting a predetermined wavelength optical signal; a second wavelength selector for receiving the optical signal of an output side branched partially by the second optical branch and for selecting the predetermined wavelength optical signal; a signal processor for receiving the optical signal of a second side distributed by the optical distributor and the predetermined wavelength optical signal selected by the first and second optical wavelength selector and for measuring a total power of an input signal and a number of input channels; and a controller for generating a control signal according to the total power of the input signal and the number of input channels measured by the signal processor.

    摘要翻译： 本发明提供一种自动增益控制光纤放大器，包括：第一光分路，用于分支输入到光纤放大器的光信号的一部分; 第二光分支，用于分支从所述光纤放大器输出的光信号的一部分; 光分配器，用于接收由第一光分支部分地分支的输入侧的光信号，并分别输出; 第一波长选择器，用于接收由光分配器分配的一侧的光信号并用于选择预定波长的光信号; 第二波长选择器，用于接收由第二光分支部分分支并用于选择预定波长光信号的输出侧的光信号; 信号处理器，用于接收由光分配器分配的第二侧的光信号和由第一和第二光波长选择器选择的预定波长光信号，并用于测量输入信号和多个输入通道的总功率; 以及控制器，用于根据输入信号的总功率和由信号处理器测量的输入通道的数量产生控制信号。

    RANDOM ACCESS METHOD FOR MACHINE TYPE COMMUNICATION TERMINAL
    9.
    发明申请
    RANDOM ACCESS METHOD FOR MACHINE TYPE COMMUNICATION TERMINAL 审中-公开
    机器类型通信终端的随机访问方法

    公开(公告)号：US20160242211A1

    公开(公告)日：2016-08-18

    申请号：US14620361

    申请日：2015-02-12

    申请人： Hee Sang CHUNG ,  Il Gyu KIM

    发明人： Hee Sang CHUNG ,  Il Gyu KIM

    IPC分类号： H04W74/08 ,  H04W72/04 ,  H04L5/00 ,  H04J11/00 ,  H04W4/00

    CPC分类号： H04W74/0833 ,  H04J11/0073 ,  H04J2011/0096 ,  H04L1/00 ,  H04L5/0048 ,  H04L5/0069 ,  H04L5/0082 ,  H04L5/14 ,  H04W4/70

    摘要： Disclosed is a random access method for a machine type communication (MTC) terminal. The random access method performed by a terminal includes performing a cell search, determining a radio environment based on time taken to perform the cell search, and performing different random access procedures depending on the determined radio environment. Accordingly, coverage of the MTC terminal that is in a poor radio environment may be enhanced, thereby performing normal communication with a base station.

    摘要翻译： 公开了一种用于机器型通信（MTC）终端的随机接入方法。 由终端执行的随机接入方法包括执行小区搜索，基于执行小区搜索所花费的时间来确定无线电环境，以及根据确定的无线电环境执行不同的随机接入过程。 因此，可以增强处于恶劣的无线环境中的MTC终端的覆盖，从而与基站进行正常的通信。

    Auto gain control method in digital communication system
    10.
    发明授权
    Auto gain control method in digital communication system 失效
    数字通信系统中的自动增益控制方法

    公开(公告)号：US08391428B2

    公开(公告)日：2013-03-05

    申请号：US12543815

    申请日：2009-08-19

    申请人： Hyun Gu Hwang ,  Hyeong Jun Park ,  Hee Sang Chung

    发明人： Hyun Gu Hwang ,  Hyeong Jun Park ,  Hee Sang Chung

    IPC分类号： H04B1/10

    CPC分类号： H03G3/3089

    摘要： Provided is an auto gain control method in a digital communication system. The auto gain control method checks a distribution of a signal and a distribution of a signal envelope during a regular check interval, and determines a state of a current gain value from the distribution of the signal and the distribution of the signal envelope which are obtained through the checking of the distribution. The auto gain control method controls a gain value for auto gain control according to the determined state of the current gain value.

    摘要翻译： 提供了一种数字通信系统中的自动增益控制方法。 自动增益控制方法在常规检查间隔期间检查信号的分布和信号包络的分布，并根据信号的分布和信号包络的分布来确定当前增益值的状态 检查分配。 自动增益控制方法根据当前增益值的确定状态来控制自动增益控制的增益值。