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    • 1. 发明授权
    • Optical CDMA transmitting apparatus and method for transmitting bipolar data
    • 光CDMA发送装置及发送双极数据的方法
    • US07308199B2
    • 2007-12-11
    • US10645289
    • 2003-08-18
    • Bong Kyu KimYounghee YeonByoung Whi KimHyeong Ho LeeSangjo Park
    • Bong Kyu KimYounghee YeonByoung Whi KimHyeong Ho LeeSangjo Park
    • H04J4/00H04J14/00H04B10/04H04B10/12
    • H04J14/005H04J13/16
    • Provided is an optical Code Division Multiple Access (CDMA) transmitting apparatus and method for transmitting bipolar data in an optical CDMA system. The optical CDMA transmitting apparatus and method of the present research has a simple structure, including only one optical CDMA encoder and one optical modulator. This technology minimizes multiple access interference by using modified pseudo-noise code in the encoding process, thus improving the optical CDMA transmission performance. The optical CDMA transmitting apparatus includes: an optical CDMA encoding means for encoding lights from the outside into a code or a complement code of the code; and an optical modulation means for transmitting the code or the complement code of the code which is selected in the optical CDMA encoding means based on the polarity (either ‘0’ or ‘1’) of the data inputted from the outside.
    • 提供了一种用于在光CDMA系统中传输双极性数据的光码分多址(CDMA)发射装置和方法。 本研究的光CDMA发射装置和方法具有简单的结构,仅包括一个光CDMA编码器和一个光调制器。 该技术通过在编码处理中使用修改的伪噪声码来最大限度地减少多址接入干扰,从而提高光CDMA传输性能。 光CDMA发送装置包括:用于将来自外部的光编码为码的码或补码的光CDMA编码装置; 以及光调制装置,用于基于从外部输入的数据的极性(“0”或“1”)发送在光CDMA编码装置中选择的码的码或补码。
    • 2. 发明授权
    • Two-dimensional optical CDMA system, PN coded wavelength/time encoder and decoder therein, and method of encoding/decoding
    • 二维光CDMA系统,PN编码波长/时间编码器和解码器,以及编码/解码方法
    • US07689124B2
    • 2010-03-30
    • US11172336
    • 2005-06-30
    • Young Hee YeonBong Kyu KimSung Chan ChoByoung Whi KimSang Jo Park
    • Young Hee YeonBong Kyu KimSung Chan ChoByoung Whi KimSang Jo Park
    • H04B10/00
    • H04J14/005
    • Disclosed herein are a CDMA optical system and encoder and decoder included therein. Time domain encoding means creates a time domain code having a sequence according to inputted data bits or a complementary code which is complementary to the time domain code. An optical modulation means selectively outputs lights, in which the lights are incident upon the optical modulation means from the outside, to two output leads, respectively, according to chip bits of the time domain code or the complementary code. A wavelength domain encoding means encodes the light outputted from a first output lead of the optical modulation means to a wavelength domain sequence (two dimensional code), transmits the wavelength code to the base station, encodes the light outputted from a second output lead to a complementary sequence of the wavelength domain sequence, and transmits the complementary code of the two dimensional code to the base station.
    • 本文公开了包括在其中的CDMA光学系统及其编码器和解码器。 时域编码装置创建具有根据输入数据位的序列的时域码或与时域码互补的补码。 光调制装置根据时域码或互补码的芯片位选择性地将来自外部的光入射到光调制装置的光分别输出到两个输出引线。 波长域编码装置将从光调制装置的第一输出引线输出的光编码为波长域序列(二维码),将波长码发送到基站,将从第二输出引线输出的光编码为 波长域序列的互补序列,并将二维码的补码发送到基站。
    • 4. 发明授权
    • WDM-PON system based on wavelength-tunable external cavity laser light source
    • 基于波长可调谐外腔激光光源的WDM-PON系统
    • US07471899B2
    • 2008-12-30
    • US10968423
    • 2004-10-18
    • Byoung Whi KimHyeong Ho LeeJae Woo Yang
    • Byoung Whi KimHyeong Ho LeeJae Woo Yang
    • H04J14/00
    • H04J14/0282H04J14/0226H04J14/0246H04J14/025
    • Provided is a WDM-PON system based on a wavelength-tunable ECL. A method of controlling an upstream optical wavelength of an ONT in WDM-PON system, the method comprises: determining upstream optical wavelength information of the ONT corresponding to a downstream optical wavelength predetermined to the ONT newly installed by being connected to a network; in an OLT, loading the determined upstream optical wavelength information onto the downstream optical wavelength assigned to the ONT and transmitting the loaded upstream optical wavelength information to the ONT; in the ONT, generating an upstream optical wavelength based on the upstream optical wavelength information transmitted by being loaded on the downstream optical wavelength from the OLT; and in the ONT, loading upstream data onto the generated upstream optical wavelength and transmitting the loaded upstream data to the OLT.
    • 提供了一种基于波长可调ECL的WDM-PON系统。 一种在WDM-PON系统中控制ONT的上行光波长的方法,该方法包括:通过连接到网络,确定新安装的ONT对应于下行光波长的上行光波长信息; 在OLT中,将确定的上行光波长信息加载到分配给ONT的下行光波长,并将加载的上行光波长信息发送到ONT; 在ONT中,基于通过从OLT向下游光波长加载而发送的上行光波长信息生成上行光波长; 并且在ONT中,将上行数据加载到生成的上行光波长上,并将加载的上行数据传送到OLT。
    • 6. 发明授权
    • Optical network terminal and wavelength division multiplexing based optical network having the same
    • 光网络终端和基于波分复用的光网络具有相同的性能
    • US07539416B2
    • 2009-05-26
    • US11005758
    • 2004-12-06
    • Byoung Whi KimJae Woo YangHyeong Ho Lee
    • Byoung Whi KimJae Woo YangHyeong Ho Lee
    • H04J14/00
    • H04J14/02H04B10/2587H04J14/0226H04J14/0246H04J14/025H04J14/0282
    • Disclosed is a loop-back optical network terminal using a Febry-Perot laser diode as an active type optical modulator in a wavelength division multiplexing based optical network. In addition, a wavelength division multiplexing based optical network having the same is disclosed. The optical network terminal comprises a modulation timing control signal generator receiving a downstream optical signal transmitted from a central office and generating a timing control signal designating a start timing and an end timing for modulating an upstream optical signal to be transmitted from a user to the central office; an upstream data control circuit generating upstream data according to the timing control signal and controlling modulation of the upstream optical signal according to the timing control signal in response to generation of the upstream data; and a modulator receiving the upstream data and directly modulating the upstream data with loop-backing the downstream optical signal to produce the upstream optical signal and then output it to the central office.
    • 公开了一种在基于波分复用的光网络中使用Febry-Perot激光二极管作为有源型光调制器的环回光网络终端。 此外,公开了具有该波分复用的光网络。 光网络终端包括接收从中心局发送的下行光信号的调制定时控制信号发生器,并产生一个定时控制信号,该定时控制信号指定开始定时和结束定时,用于调制从用户发送到中央的上行光信号 办公室; 上游数据控制电路根据定时控制信号产生上行数据,并响应于上行数据的产生,根据定时控制信号控制上行光信号的调制; 以及调制器,接收上游数据,并通过环回下行光信号直接调制上行数据,产生上行光信号,然后将其输出到中心局。
    • 9. 发明授权
    • Apparatus for transceiving packets in WDM-PON
    • 用于在WDM-PON中收发数据包的装置
    • US07330438B2
    • 2008-02-12
    • US11007017
    • 2004-12-07
    • Byoung Whi KimHyun Ho YunHyeong Ho Lee
    • Byoung Whi KimHyun Ho YunHyeong Ho Lee
    • H04L12/26
    • H04J14/0227H04J14/0241H04J14/0282H04J2014/0253
    • Provided is an apparatus that enables improvement of efficiency of up/downstream packet tensception by reflecting a plurality of variables of packet transmission, such as a temporal variety of packet lengths, asymmetry of downstream and upstream traffics, and an instantaneous burst of a traffic amount, on a loop-back-based WDM-PON. The apparatus includes: a downstream code sensor sensing an idle code from a downstream data frame to be transmitted to an optical network terminal (ONT); a trailer transmission controller receiving an idle code sensing signal from the downstream code sensor and forming a trailer of the downstream data frame (hereinafter, a downstream trailer) by adding overhead for a reception control of the downstream data frame by the ONT and a transmission control of an upstream data frame to be loop-back-transmitted from the ONT; an upstream code sensor receiving and sensing a trailer of the loop-back-transmitted upstream data frame (hereinafter, an upstream trailer); and a trailer reception controller receiving overhead information, which is added by the ONT, for a reception control of the upstream data frame from the upstream code sensor and controlling a reception of the upstream data frame.
    • 提供了一种能够通过反映分组传输的多个变量(诸如分组长度的时间种类,下行和上行流量的不对称性以及交通量的瞬时突发)来提高上/下分组张力的效率的装置, 在基于循环的WDM-PON上。 该装置包括:下游代码传感器,感测来自要发送到光网络终端(ONT)的下游数据帧的空闲代码; 拖车传输控制器,通过将由ONT对下游数据帧的接收控制加上开销,以及传输控制,从下游代码传感器接收空闲代码感测信号并形成下行数据帧的拖尾(以下称为下游拖车) 从ONT循环发送的上行数据帧; 上游代码传感器接收和感测环回发送的上行数据帧的尾部(以下称为上游拖车); 以及拖车接收控制器,其接收由ONT添加的开销信息,用于从上游代码传感器接收对上游数据帧的控制,并控制上行数据帧的接收。