公开(公告)号：US20160285553A1

公开(公告)日：2016-09-29

申请号：US15079714

申请日：2016-03-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Hyun CHO ,  Jong Hyun LEE ,  Hwan Seok CHUNG ,  Chan Gyo HAN

IPC: H04B10/2575

CPC classification number: H04B10/25753 ,  H04B10/25759

Abstract: An apparatus for transmitting a control signal in a radio-over-fiber (RoF)-based mobile fronthaul includes: a data channel transmitter configured to generate a data signal at a preassigned frequency or wavelength; a control channel transmitter configured to generate a control signal at a designated frequency or wavelength that is shared with other apparatuses; and a combiner configured to combine the data signal with the control signal.

Abstract translation: 一种用于在基于光纤无线（RoF）的移动前端中发送控制信号的装置包括：数据信道发射机，被配置为以预分配的频率或波长生成数据信号; 控制信道发射机，被配置为产生与其他设备共享的指定频率或波长的控制信号; 以及组合器，被配置为将数据信号与控制信号组合。

公开(公告)号：US20150382237A1

公开(公告)日：2015-12-31

申请号：US14733095

申请日：2015-06-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Hwan KIM ,  Seung Hyun CHO ,  Sang Soo LEE

IPC: H04W28/06 ,  H04L27/26 ,  H04J11/00

CPC classification number: H04L27/2636 ,  H04L27/2647

Abstract: A network apparatus as well as a data compression and data recovery method thereof using compressed sensing (CS). According to an exemplary embodiment, the data compression and recovery method may include compressing raw digital signals by using CS; modulating and transmitting the compressed raw digital signals; receiving and demodulating the modulated raw digital signals; and recovering the raw digital signals by decompressing, by using CS, the demodulated raw digital signals.

Abstract translation: 网络装置以及使用压缩感测（CS）的数据压缩和数据恢复方法。 根据示例性实施例，数据压缩和恢复方法可以包括通过使用CS压缩原始数字信号; 调制和传输压缩的原始数字信号; 接收和解调调制的原始数字信号; 并通过使用CS解调原始数字信号来解压缩原始数字信号。

公开(公告)号：US20140003818A1

公开(公告)日：2014-01-02

申请号：US13928570

申请日：2013-06-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jie Hyun LEE ,  Seung Hyun CHO ,  Seung Il MYONG ,  Sang Soo LEE

IPC: H04B10/50

CPC classification number: H04B10/503 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/141

Abstract: Provided is an external cavity laser using a multilayered thin film filter and an optical transmitter having the same. The external cavity laser may include a semiconductor laser diode to output an optical signal, a lens to cause the optical signal output from the semiconductor laser diode to converge, a multilayered thin film filter to receive the optical signal passed through the lens and to pass the optical signal in a bandpass wavelength range, and a partial reflector to transmit the optical signal transmitted through the multilayered thin film filter to an optical fiber.

Abstract translation: 提供了使用多层薄膜滤光器的外腔激光器和具有该外腔激光器的光发射器。 外腔激光器可以包括用于输出光信号的半导体激光二极管，用于使来自半导体激光二极管的光信号输出会聚的透镜，多层薄膜滤光器以接收通过透镜的光信号并使 光信号在带通波长范围内，以及部分反射器将透过多层薄膜滤光片的光信号传输到光纤。

公开(公告)号：US20130170830A1

公开(公告)日：2013-07-04

申请号：US13729521

申请日：2012-12-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Hyun CHO ,  Jie Hyun LEE ,  Kwang Ok KIM ,  Eui Suk JUNG ,  Seung Il MYONG ,  Sang Soo LEE ,  Jong Hyun LEE

IPC: H04B10/27

CPC classification number: H04B10/27 ,  H04B10/272 ,  H04B10/564 ,  H04B17/103 ,  H04B17/15

Abstract: A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link.

Abstract translation: 公开了一种光调制解调器的调制方法和执行该方法的信号传输装置。 光调制解调器的调制方法包括向光源提供信号的光接口，当基于提供的信号的来自光源的输出光被光链路反射时，光接收器接收由光链路反射的光的光检测器，照片 检测器使用反射光测量和确定光链路的特性，并且光调制解调器基于光链路的特性确定每个子载波的功率电平和调制方法。