公开(公告)号：US20070133995A1

公开(公告)日：2007-06-14

申请号：US11607700

申请日：2006-12-01

Applicant: Jae-Hoon Lee ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sang-Ho Kim ,  Yong-Gyoo Kim ,  Sung-Kee Kim ,  Han-Lim Lee

Inventor： Jae-Hoon Lee ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sang-Ho Kim ,  Yong-Gyoo Kim ,  Sung-Kee Kim ,  Han-Lim Lee

IPC: H04B10/00

CPC classification number: H04B10/25758

Abstract: A remote access unit (RAU) apparatus, coupled to a central station (CS) of an RoF network through at least one optical fiber, and which RAU apparatus includes at least one antenna, includes: first and second antenna ports coupled to the at least one antenna; first and second optical fiber ports coupled to the at least one optical fiber; a first coupler for decoupling a first downstream signal of a first duplexing method and a second downstream signal of a second duplexing method, which are input through the first optical fiber port; a circulator for outputting the first downstream signal input from the first coupler to the first antenna port and outputting a first upstream signal of the first duplexing method input from the first antenna port to the second optical fiber port; and a second coupler for outputting the second downstream signal input from the first coupler to the second antenna port and outputting a second upstream signal of the second duplexing method input from the second antenna port to the second optical fiber port.

Abstract translation: 一种远程接入单元（RAU）装置，其通过至少一个光纤耦合到RoF网络的中心站（CS），并且所述RAU设备包括至少一个天线，包括：耦合到所述至少一个天线的第一和第二天线端口 一个天线 耦合到所述至少一个光纤的第一和第二光纤端口; 用于去耦第一双工方法的第一下行信号和通过第一光纤端口输入的第二双工方法的第二下行信号的第一耦合器; 输出从第一耦合器输入的第一下行信号到第一天线端口的循环器，并输出从第一天线端口输入到第二光纤端口的第一双工方式的第一上行信号; 以及第二耦合器，用于将从第一耦合器输入的第二下行信号输出到第二天线端口，并输出从第二天线端口输入到第二光纤端口的第二双工方法的第二上行信号。

公开(公告)号：US07224506B2

公开(公告)日：2007-05-29

申请号：US11360076

申请日：2006-02-23

Applicant: Sung-Kee Kim ,  Hoon Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

Inventor： Sung-Kee Kim ,  Hoon Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

IPC: G02F1/01

CPC classification number: G02F1/2255

Abstract: A single side band modulation device includes a first Mach Zehnder interferometer and a second Mach Zehnder interferometer. The first Mach Zehnder interferometer includes at least two output arms, and the second Mach Zehnder interferometer includes at least two output arms. Terminals of the output arms are connected with one another.

Abstract translation: 单边带调制装置包括第一马赫策德尔干涉仪和第二马赫曾德尔干涉仪。 第一马赫策德尔干涉仪包括至少两个输出臂，第二马赫策德尔干涉仪包括至少两个输出臂。 输出臂的端子彼此连接。

公开(公告)号：US07630694B2

公开(公告)日：2009-12-08

申请号：US11395806

申请日：2006-03-31

Applicant: Yong-Gyoo Kim ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sang-Ho Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee

Inventor： Yong-Gyoo Kim ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sang-Ho Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee

IPC: H01Q11/12

CPC classification number: H04L5/26 ,  H04B10/25758 ,  H04W16/26

Abstract: Disclosed is a remote access unit for transmitting and receiving upstream and downstream data in which channels having different transmission scheme are multiplexed, and an optical network for bi-directional wireless communication using same. The remote access unit includes an antenna for receiving the downstream data and wirelessly transmitting same and for receiving the upstream data and providing same to the remote access unit, a switch for outputting downstream time division channels of the downstream data to the antenna and for receiving upstream time division channels of the upstream data from the antenna, and a controller for controlling the switch in order to prevent the upstream and downstream time division channels from overlapping.

Abstract translation: 公开了一种用于发送和接收上行和下行数据的远程访问单元，其中具有不同传输方案的信道被复用，以及用于使用其的双向无线通信的光网络。 远程接入单元包括：天线，用于接收下行数据并进行无线发送，并用于接收上行数据并将其提供给远程接入单元;开关，用于向下游天线输出下游数据的下行时分信道​​，并用于接收上游 来自天线的上行数据的时分信道，以及用于控制交换机的控制器，以防止上游和下游时分信道重叠。

公开(公告)号：US20080107202A1

公开(公告)日：2008-05-08

申请号：US11906370

申请日：2007-10-02

Applicant: Han-Lim Lee ,  Shuangfeng Han ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hoon Kim

Inventor： Han-Lim Lee ,  Shuangfeng Han ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hoon Kim

IPC: H04B7/02

CPC classification number: H04L27/18 ,  H04B7/0413 ,  H04B10/2575 ,  H04J13/00

Abstract: A multiple-input multiple-output (MIMO) communication system includes a base station and a relay station that are connected through an optical fiber. The relay station wirelessly transmits through a plurality of antennas a signal received from the base station. The base station includes a plurality of symbol mappers for mapping input bit streams into a plurality of symbol signals; a MIMO multiplexer generating a plurality of exchange signals by exchanging bits of the symbol signals; and a plurality of code spreaders generating a plurality of spread signals by band spreading the exchange signals. The adoption of a wire transmission scheme for connecting the base station with the relay station through a single optical fiber provides benefits in cost reduction and complexity as the number of electrical-to-optical converters is reduced, and the bandwidth is superior to those in wireless transmission scheme

Abstract translation: 多输入多输出（MIMO）通信系统包括通过光纤连接的基站和中继站。 中继站通过多个天线无线地发送从基站接收的信号。 基站包括用于将输入比特流映射成多个符号信号的多个符号映射器; MIMO多路复用器，通过交换所述符号信号的位来产生多个交换信号; 以及多个代码扩展器，通过对交换信号进行频谱扩展来产生多个扩展信号。 采用通过单个光纤将基站与中继站连接的有线传输方案随着电 - 光转换器的数量的减少和复杂度的降低和复杂性的提高，带宽优于无线 传输方案

公开(公告)号：US20070127931A1

公开(公告)日：2007-06-07

申请号：US11607701

申请日：2006-12-01

Applicant: Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

Inventor： Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04B10/40

Abstract: Disclosed is an optical transceiver module for modulating a binary signal into an optical signal and outputting the optical signal. In one aspect, the optical transceiver module comprises a tap for dividing a binary signal into first and second binary signals, a laser source for frequency-modulating the first binary signal divided by the tap, and an intensity modulator for modulating the second binary signal divided by the tap and the frequency-modulated signal of the laser source into a phase-inverted optical signal.

Abstract translation: 公开了一种用于将二进制信号调制成光信号并输出​​光信号的光收发模块。 一方面，光收发器模块包括用于将二进制信号分成第一和第二二进制信号的抽头，用于对由分接头划分的第一二进制信号进行频率调制的激光源和用于调制分频的第二二进制信号的强度调制器 通过抽头和激光源的调频信号变为相位反转的光信号。

公开(公告)号：US20070046836A1

公开(公告)日：2007-03-01

申请号：US11504858

申请日：2006-08-16

Applicant: Sung-Kee Kim ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Sang-Ho Kim ,  Gyu-Woong Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Han-Lim Lee ,  Hoon Kim

Inventor： Sung-Kee Kim ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Sang-Ho Kim ,  Gyu-Woong Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Han-Lim Lee ,  Hoon Kim

IPC: H04N5/50

CPC classification number: H04B10/2575

Abstract: Disclosed is an ROF link apparatus for selecting an IF band in order to process various service signals through an MMF, which including transmitters for receiving the service signals, performing IF modulation for the service signals, and transferring the modulated IF signals, a first controller for scanning frequency characteristics of the MMF, searching for flat frequency bands, and transferring information regarding the flat frequency band, thereby controlling IF modulation to be performed, a link unit for combining the IF signals with output signals of the first controller, converting the combined signals into optical signals, transmitting the optical signals, converting the optical signals into electrical signals, and splitting the electrical signals, a second controller for receiving the output signals of the first controller, detecting information regarding the flat frequency band, and transferring the information to receivers, thereby controlling modulation to be performed, and the receivers for receiving the IF modulated signals, receiving the information from the second controller, and performing RF modulation.

Abstract translation: 公开了一种用于选择IF频带以便通过MMF处理各种服务信号的ROF链路装置，该MMF包括用于接收服务信号的发射机，对服务信号执行IF调制，以及传送调制的IF信号，第一控制器 MMF的扫描频率特性，搜索平坦频带，以及传送关于平坦频带的信息，由此控制要执行的IF调制;用于将IF信号与第一控制器的输出信号组合的链路单元，转换组合信号 传输光信号，将光信号转换为电信号，分割电信号;第二控制器，用于接收第一控制器的输出信号，检测关于平坦频带的信息，以及将信息传送到接收机 ，从而控制要进行的调制 用于接收IF调制信号的接收机，从第二控制器接收信息，并执行RF调制。

公开(公告)号：US20060018667A1

公开(公告)日：2006-01-26

申请号：US11005428

申请日：2004-12-06

Applicant: Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

Inventor： Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04B10/505 ,  H04B10/5055 ,  H04B10/5167

Abstract: An optical transmission apparatus using duobinary modulation adapted to an optical communication system using dense wavelength division multiplexing (DWDM) is disclosed. The duo-binary optical transmission apparatus includes an electro-absorption modulated laser (EML) for performing a light intensity modulation operation based on an electrical data signal and producing a modulated optical signal, the EML having a light source for outputting carriers and a modulator for performing the light intensity modulation operation, a precoder for inputting an inverted signal of the electrical data signal and encoding it to an encoded signal, and a modulator for performing a phase modulation of the optical signal modulated by the EML and outputting a duo-binary optical signal, according to the encoded signal.

Abstract translation: 公开了一种使用二进制调制的光传输装置，其适用于使用密集波分复用（DWDM）的光通信系统。 双二进制光传输装置包括：电吸收调制激光器（EML），用于基于电数据信号执行光强度调制操作并产生调制光信号，所述EML具有用于输出载波的光源和用于 执行光强调制操作，用于输入电数据信号的反相信号并将其编码为编码信号的预编码器，以及用于对由EML调制的光信号进行相位调制的调制器，并输出二进制二进制光 信号，根据编码信号。

公开(公告)号：US08041222B2

公开(公告)日：2011-10-18

申请号：US11953911

申请日：2007-12-11

Applicant: Han-Lim Lee ,  Hoon Kim ,  Seong-Taek Hwang

Inventor： Han-Lim Lee ,  Hoon Kim ,  Seong-Taek Hwang

IPC: H04B10/00

CPC classification number: H04J14/02 ,  H04B10/25758 ,  H04W88/085

Abstract: A radio over fiber link apparatus for transmitting/receiving radio frequency up/downlink signals in a TDD mobile communication system. The radio over fiber link apparatus includes a center site for receiving radio frequency signals from an access point of the mobile communication system. The center site has a first electro-optic converter for converting the radio frequency signals into optical signals, bias control of the first electro-optic converter being performed based on the switching of TDD signals; and a remote for transmitting the radio frequency signals to a mobile communication terminal through an antenna. The remote site has a first photoelectric converter for converting the optical signals transmitted through an optical fiber from the center site into radio frequency signals.

Abstract translation: 一种用于在TDD移动通信系统中发送/接收射频上行/下行链路信号的无线电光纤链路装置。 光纤链路装置的无线电装置包括用于从移动通信系统的接入点接收射频信号的中心站点。 中心站点具有用于将射频信号转换为光信号的第一电光转换器，基于TDD信号的切换执行第一电光转换器的偏置控制; 以及用于通过天线将射频信号发送到移动通信终端的遥控器。 远程站点具有第一光电转换器，用于将通过光纤传输的光信号从中心位置转换成射频信号。

公开(公告)号：US07733825B2

公开(公告)日：2010-06-08

申请号：US11514440

申请日：2006-09-01

Applicant: Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

Inventor： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

IPC: H04W4/00 ,  H04L12/56

CPC classification number: H04W88/085

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20080145061A1

公开(公告)日：2008-06-19

申请号：US11953911

申请日：2007-12-11

Applicant: Han-Lim LEE ,  Hoon Kim ,  Seong-Taek Hwang

Inventor： Han-Lim LEE ,  Hoon Kim ,  Seong-Taek Hwang

IPC: H04B10/00 ,  H04J3/00

CPC classification number: H04J14/02 ,  H04B10/25758 ,  H04W88/085

Abstract: A radio over fiber link apparatus for transmitting/receiving radio frequency up/downlink signals in a TDD mobile communication system. The radio over fiber link apparatus includes a center site for receiving radio frequency signals from an access point of the mobile communication system. The center site has a first electro-optic converter for converting the radio frequency signals into optical signals, bias control of the first electro-optic converter being performed based on the switching of TDD signals; and a remote for transmitting the radio frequency signals to a mobile communication terminal through an antenna. The remote site has a first photoelectric converter for converting the optical signals transmitted through an optical fiber from the center site into radio frequency signals.

Abstract translation: 一种用于在TDD移动通信系统中发送/接收射频上行/下行链路信号的无线电光纤链路装置。 光纤链路装置的无线电设备包括用于从移动通信系统的接入点接收射频信号的中心站点。 中心站点具有用于将射频信号转换为光信号的第一电光转换器，基于TDD信号的切换执行第一电光转换器的偏置控制; 以及用于通过天线将射频信号发送到移动通信终端的遥控器。 远程站点具有第一光电转换器，用于将通过光纤传输的光信号从中心位置转换成射频信号。