专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060018667A1 Optical transmission apparatus using duobinary modulation 审中-公开
标题翻译：使用二进制调制的光传输设备
公开(公告)号：US20060018667A1
公开(公告)日：2006-01-26
申请号：US11005428
申请日：2004-12-06
申请人： Han-Lim Lee , Hoon Kim , Jae-Hoon Lee , Yun-Je Oh , Seong-Taek Hwang
发明人： Han-Lim Lee , Hoon Kim , Jae-Hoon Lee , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5167
摘要： 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.
摘要翻译：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。

2. 发明授权

US07733825B2 ROF link apparatus capable of stable TDD wireless service 失效
标题翻译：能够稳定TDD无线服务的ROF链路装置
公开(公告)号：US07733825B2
公开(公告)日：2010-06-08
申请号：US11514440
申请日：2006-09-01
申请人： 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
发明人： 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分类号： H04W4/00 , H04L12/56
CPC分类号： H04W88/085
摘要： 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.
摘要翻译：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。

3. 发明申请

US20070053311A1 ROF link apparatus capable of stable TDD wireless service 失效
标题翻译：能够稳定TDD无线服务的ROF链路装置
公开(公告)号：US20070053311A1
公开(公告)日：2007-03-08
申请号：US11514440
申请日：2006-09-01
申请人： 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
发明人： 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分类号： H04J3/00
CPC分类号： H04W88/085
摘要： 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.
摘要翻译：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。

4. 发明申请

US20080107202A1 Multiple-input multiple-output communication system 审中-公开
标题翻译：多输入多输出通信系统
公开(公告)号：US20080107202A1
公开(公告)日：2008-05-08
申请号：US11906370
申请日：2007-10-02
申请人： Han-Lim Lee , Shuangfeng Han , Yun-Je Oh , Seong-Taek Hwang , Hoon Kim
发明人： Han-Lim Lee , Shuangfeng Han , Yun-Je Oh , Seong-Taek Hwang , Hoon Kim
IPC分类号： H04B7/02
CPC分类号： H04L27/18 , H04B7/0413 , H04B10/2575 , H04J13/00
摘要： 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
摘要翻译：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

5. 发明申请

US20050058461A1 Optical transmission device 审中-公开
标题翻译：光传输装置
公开(公告)号：US20050058461A1
公开(公告)日：2005-03-17
申请号：US10843233
申请日：2004-05-10
申请人： Han-Lim Lee , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang , Sung-Kee Kim , Gyu-Woong Lee
发明人： Han-Lim Lee , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang , Sung-Kee Kim , Gyu-Woong Lee
IPC分类号： G02F1/035 , H04B10/2507 , H04B10/2513 , H04B10/2537 , H04B10/516 , H04B10/61 , H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5167
摘要： A duobinary optical transmission device that uses a duobinary optical transmission technique is disclosed. The duobinary optical transmission device may use an X-cut Mach-Zehnder interferometer type modulator. The duobinary optical transmission device includes a light source that outputs a carrier wave. A duobinary encoder encodes an input non-return-to-zero (NRZ) electrical signal. A low pass filter (LPF) converts the encoded signal into a 3-level electrical signal. An optical intensity modulator modulates the phase and light intensity of the carrier wave according to the 3-level electrical signal and outputs a 2-level optical duobinary signal. The optical intensity modulator may be an X-cut optical intensity modulator including a substrate; an optical waveguide formed on the substrate, and an electrode for applying an electric field.
摘要翻译：公开了一种使用双二进制光传输技术的双向光传输装置。双向光传输装置可以使用X切割马赫 - 曾德干涉仪型调制器。二元光传输装置包括输出载波的光源。二进制编码器对输入的不归零（NRZ）电信号进行编码。低通滤波器（LPF）将编码信号转换为3级电信号。光强调制器根据3电平电信号调制载波的相位和光强，并输出2电平的光双二进制信号。光强度调制器可以是包括衬底的X切割光强度调制器; 形成在基板上的光波导和用于施加电场的电极。

6. 发明申请

US20070133995A1 Remote access unit and radio-over-fiber network using same 失效
标题翻译：远程访问单元和使用相同的光纤网络
公开(公告)号：US20070133995A1
公开(公告)日：2007-06-14
申请号：US11607700
申请日：2006-12-01
申请人： 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
发明人： 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分类号： H04B10/00
CPC分类号： H04B10/25758
摘要： 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.
摘要翻译：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。

7. 发明授权

US07630694B2 Remote access unit and optical network for bidirectional wireless communication using the same 失效
标题翻译：远程访问单元和光网络，用于双向无线通信
公开(公告)号：US07630694B2
公开(公告)日：2009-12-08
申请号：US11395806
申请日：2006-03-31
申请人： 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
发明人： 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分类号： H01Q11/12
CPC分类号： H04L5/26 , H04B10/25758 , H04W16/26
摘要： 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.
摘要翻译：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。

8. 发明申请

US20070046836A1 ROF link apparatus for selecting IF band to process service signals through MMF and method for selecting IF band 审中-公开
标题翻译：用于通过MMF选择IF频带以处理服务信号的ROF链路装置和用于选择IF频带的方法
公开(公告)号：US20070046836A1
公开(公告)日：2007-03-01
申请号：US11504858
申请日：2006-08-16
申请人： 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
发明人： 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分类号： H04N5/50
CPC分类号： H04B10/2575
摘要： 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.
摘要翻译：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。

9. 发明申请

US20070147273A1 ROF link system for supporting various services 有权
标题翻译： ROF链路系统支持各种业务
公开(公告)号：US20070147273A1
公开(公告)日：2007-06-28
申请号：US11633838
申请日：2006-12-05
申请人： Han-Lim Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Jae-Hoon Lee , Yong-Gyoo Kim , Sang-Ho Kim , Sung-Kee Kim
发明人： Han-Lim Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Jae-Hoon Lee , Yong-Gyoo Kim , Sang-Ho Kim , Sung-Kee Kim
IPC分类号： H04J3/00
CPC分类号： H04B10/25758 , H04H20/69 , H04H20/71 , H04W88/085 , H04W88/10
摘要： Disclosed is a radio-over-fiber (ROF) system for supporting various services, the system comprising: a central access platform (CAP) for providing time division duplexing (TDD), frequency division duplexing (FDD), and broadcasting services, converting a TDD downward signal and FDD/broadcasting downward signals into optical signals, respectively, transmitting the converted optical signals to a remote access unit (RAU), converting a TDD upward signal and an FDD upward signal, which have been transmitted as optical signals from the RAU, into electric signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other; and the RAU for converting the TDD downward signal and FDD/broadcasting downward signals transmitted from the CAP into electric signals, respectively, converting the TDD upward signal and FDD upward signal to be transmitted to the CAP into optical signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other, wherein the RAU includes a plurality of signal filtering/separating/combining units, which wirelessly emit the TDD downward signal and FDD/broadcasting downward signals, having been converted into electric signals, through an antenna, and which separate wirelessly-received TDD upward signal and FDD upward signal from each other.
摘要翻译：公开了用于支持各种业务的无线电光纤（ROF）系统，该系统包括：用于提供时分双工（TDD），频分双工（FDD）和广播服务的中央接入平台（CAP） TDD向下信号和FDD /广播向下信号分别转换成光信号，将转换后的光信号发送到远程接入单元（RAU），转换已经作为光信号从RAU发送的TDD上行信号和FDD向上信号分别变成电信号，并使用光循环器，以便彼此分离上下信号; 以及分别将从CAP发送的TDD向下信号和FDD /广播向下信号转换成电信号的RAU，分别将TDD向上信号和FDD向上信号转换为发送到CAP的光信号，并使用光循环器，以便彼此分离上下信号，其中RAU包括多个信号滤波/分离/组合单元，其经过转换成电信号无线地发射TDD向下信号和FDD /广播向下信号，通过天线，并且将无线接收的TDD上行信号和FDD上行信号彼此分离。

10. 发明授权

US07660531B2 Remote access unit and radio-over-fiber network using same 失效
标题翻译：远程访问单元和使用相同的光纤网络
公开(公告)号：US07660531B2
公开(公告)日：2010-02-09
申请号：US11607700
申请日：2006-12-01
申请人： 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
发明人： 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分类号： H04B10/24 , H04J4/00 , H04M1/00
CPC分类号： H04B10/25758
摘要： 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.
摘要翻译：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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式