公开(公告)号：WO2018167325A1

公开(公告)日：2018-09-20

申请号：PCT/EP2018/056825

申请日：2018-03-19

Applicant: XIEON NETWORKS S.À R.L.

Inventor： SLOVAK, Juraj ,  SCHAIRER, Wolfgang ,  HERRMANN, Maximilian ,  TORRENGO, Enrico

IPC: H04B10/079

CPC classification number: H04B10/07953

Abstract: A method of determining contributions of different sources of signal degradation for optical signals transmitted over an optical link in an optical transmission system, comprising measuring a performance value (P) of a signal transmission on said optical link, deriving, from the performance value, an auxiliary noise power value (P N ) based on a predetermined relationship between the performance value (P) and the auxiliary noise power value (P N ), wherein the auxiliary noise power value (P N ) comprises contributions of amplified spontaneous emission power (P A ) generated on the optical link and a link-related equivalent noise power contributions (P L ) representing other sources of signal degradation upon transmission on the optical link, measuring or deriving an OSNR-related value (Q) for the signal transmission on the optical link, wherein the OSNR-related value (Q) corresponds to or is at least indicative of an actual OSNR on the optical link, and distinguishing, based on the auxiliary noise power value (P N ) and on the OSNR-related value (Q) between noise power contributions of amplified spontaneous emission and link-related equivalent noise power contributions.

公开(公告)号：WO2018075239A1

公开(公告)日：2018-04-26

申请号：PCT/US2017/055096

申请日：2017-10-04

Applicant: PANDUIT CORP.

Inventor： CASTRO, Jose ,  PIMPINELLA, Richard ,  LANE, Brett ,  KOSE, Bulent ,  HUANG, Yu

IPC: H04B10/2507 ,  H04B10/2513 ,  H04B10/2543 ,  H04B10/61

CPC classification number: H04B10/2507 ,  H04B10/07953 ,  H04B10/2513 ,  H04B10/2543 ,  H04B10/6163 ,  H04J2203/0076 ,  H04Q2213/03

Abstract: The present invention relates in general to communication systems, and more specifically towards methods, systems, and devices that help improve transmission rates and spectral efficiency of intensity modulated (IM) or power modulated channels utilizing multi-level pulse amplitude modulation PAM-M. In an embodiment, the present invention used an iterative algorithm to open the eyes of an eye diagram in a relatively short number of steps. The algorithm, which may not require previous characterization of the channel, utilizes pseudo-random sequences, such as PSBS15 or PRQS10, and adaptive non-linear equalizers to optimize the pre-distortion taps.

Abstract translation: 本发明一般涉及通信系统，并且更具体地涉及有助于利用多电平来改善强度调制（IM）或功率调制信道的传输速率和频谱效率的方法，系统和设备 脉冲幅度调制PAM-M。 在一个实施例中，本发明使用迭代算法以相对短的步数打开眼图的眼睛。 该算法可能不需要信道的先前表征，利用伪随机序列（例如PSBS15或PRQS10）和自适应非线性均衡器来优化预失真抽头。

公开(公告)号：WO2017152173A1

公开(公告)日：2017-09-08

申请号：PCT/US2017/020932

申请日：2017-03-06

Applicant: LEIDOS, INC.

Inventor： HARRIS, Susan ,  KREPEL, Mark ,  LUNDBERG, James ,  FISHER, Chris

IPC: G02B26/08 ,  H04B10/00 ,  H04B10/10 ,  H04B10/22

CPC classification number: H04B10/80 ,  H04B10/07953 ,  H04B10/112 ,  H04B10/40 ,  H04B10/524 ,  H04B10/564 ,  H04B13/02

Abstract: The Adaptable Pulse Position Modulation (APPM) optical communication system and process facilitate wireless communications through turbid mediums including, but not limited to, smoke, airborne dust, mist, fog, clouds, water, seawater and water-to-air (air-to-water) interfaces by controlling the signal gain at the optical detector and controlling of the signal encoding to allow high data rate operation when the signal to noise ratio is high. The system also supports signal encoding redundancy to maintain good connectivity at the cost of the communication channel data rate as the signal to noise degrades.

Abstract translation: 可适应脉冲位置调制（APPM）光通信系统和过程促进了通过混浊介质的无线通信，所述混浊介质包括但不限于烟雾，空气中的灰尘，雾，雾，云，水，海水和水 通过控制光学检测器处的​​信号增益和信号编码的控制以在信噪比高时允许高数据速率操作来实现对空（空对水）接口。 该系统还支持信号编码冗余，以保持良好的连接性，同时降低通信信道数据速率，降低噪声信号。

公开(公告)号：WO2017127421A1

公开(公告)日：2017-07-27

申请号：PCT/US2017/013928

申请日：2017-01-18

Applicant: QOSCIENCE, INC.

Inventor： HEATH, Jeffrey, Abramson ,  HAKANSON, Eric, Walter ,  YAVID, Dmitriy ,  COSENTINO, Christopher, Silvio ,  CARD, Stuart, William

IPC: H04B1/10

CPC classification number: H04B10/07953 ,  H04B1/10 ,  H04B1/1027 ,  H04B17/336 ,  H04L41/0645 ,  H04L41/069 ,  H04L43/045 ,  H04Q11/0066 ,  H04Q2011/0083 ,  H04W24/08

Abstract: A system for troubleshooting signals in a cellular communications network, and in particular, for determining the cause of distortion or corruption of such signals, includes a robotic or other type of switch. The robotic switch can tap into selected uplink fiber optic lines and selected downlink fiber optic lines between radio equipment and radio equipment controllers in a wireless network to extract therefrom * the I and Q data. The selected I and Q data, in an optical form, is provided to an optical-to-electrical converter forming part of the system. The system analyzes the I and Q data provided to it, and determines the cause of impairment to transmitted signals. The system includes a display which provides the troubleshooting information thereon for a user of the system to review, or other form of a report, and may communicate the analytical findings to a remote location.

Abstract translation: 用于对蜂窝通信网络中的信号进行故障排除的系统，特别是用于确定这种信号的失真或损坏的原因的系统包括机器人或其他类型的开关。 机器人开关可以接入无线网络中的无线电设备和无线电设备控制器之间的选定的上行光纤线路和选择的下行光纤线路，以从中提取I和Q数据。 选定的I和Q数据以光学形式提供给构成系统一部分的光电转换器。 系统分析提供给它的I和Q数据，并确定传输信号受损的原因。 该系统包括显示器，该显示器向系统的用户提供故障排除信息以供查看，或者其他形式的报告，并且可以将分析结果传送到远程位置。

公开(公告)号：WO2017058529A1

公开(公告)日：2017-04-06

申请号：PCT/US2016/051882

申请日：2016-09-15

Applicant: OSRAM SYLVANIA INC.

Inventor： STOUT, Barry ,  BREUER, Christian ,  AGGARWAL, Anant

IPC: H04B10/114 ,  H04B10/116

CPC classification number: H04B10/116 ,  H04B10/07953 ,  H04B10/114 ,  H04W4/026 ,  H04W28/0215

Abstract: Light-based communication (LCom) techniques are disclosed for adaptively adjusting the baud rate of a luminaire to optimize the LCom signal transmitted for an intended receiver device. The adaptive baud rate can be adjusted by a process that includes: determining decoding parameters of the receiver device, the device including a camera for receiving LCom signals, and a display. The process further includes calculating a baud rate suitable for the receiver device based on the decoding parameters, and causing the baud rate to be set at the luminaire. The process may further include at least one of: verifying the baud rate at the receiver device; adjusting the decoding parameters of the receiver device if baud rate cannot be adjusted to meet a current configuration of decoding parameters; and prompting a user to rotate receiver device to improve orientation of the luminaire with respect to a raster direction of the camera.

Abstract translation: 公开了基于光的通信（LCom）技术，用于自适应地调整照明设备的波特率以优化为预期接收机设备传输的LCom信号。 自适应波特率可以通过以下过程进行调整，该过程包括：确定接收机设备的解码参数，该设备包括用于接收LCom信号的相机和显示器。 该过程还包括基于解码参数来计算适合于接收机设备的波特率，并且使波特率被设置在灯具处。 该过程还可以包括以下中的至少一个：验证接收机设备处的波特率; 调整接收机设备的解码参数，如果波特率不能调整以满足当前配置的解码参数; 并且提示用户旋转接收机设备以改善相机相对于照相机光栅方向的取向。

公开(公告)号：WO2016172375A1

公开(公告)日：2016-10-27

申请号：PCT/US2016/028697

申请日：2016-04-21

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： ZHANG, Zheshen ,  WONG, Franco N. C. ,  SHAPIRO, Jeffrey H. ,  ZHUANG, Quntao

IPC: H04L9/08

CPC classification number: H04L9/0855 ,  H04B10/07953 ,  H04B10/11 ,  H04B10/2504 ,  H04L9/0852

Abstract: A method for distributing a quantum digital key is described. The method comprises the use of an optical broadband source to generate an optical broadband signal. The optical broadband signal may be transmitted from a first party to a second party through an optical communication channel. The optical broadband signal may be transmitted with a low brightness, such as less than one photon/(sec-Hz), so as to be immune from passive attacks. Furthermore, a method for detecting the presence of active attackers is described. The method may comprise a coincidence measurement configured to measure the level of entanglement between an optical detection signal and an optical idler signal.

Abstract translation: 描述了分配量子数字密钥的方法。 该方法包括使用光学宽带源来产生光学宽带信号。 光学宽带信号可以通过光通信信道从第一方发送到第二方。 光学宽带信号可以以低亮度（例如小于一个光子/（sec-Hz））传输，以免被动攻击。 此外，描述了用于检测活动攻击者的存在的方法。 该方法可以包括被配置为测量光学检测信号和光学惰轮信号之间的纠缠程度的重合测量。

公开(公告)号：WO2016023196A1

公开(公告)日：2016-02-18

申请号：PCT/CN2014/084291

申请日：2014-08-13

Applicant: 华为技术有限公司

Inventor： 董振华 ,  刘伯涛 ,  吕超 ,  卢彦兆

IPC: H04B10/07

CPC classification number: H04B10/07 ,  H04B10/07953

Abstract: 一种光信噪比的确定方法及装置，该方法包括：获取待测信道中的第一光信号；将所述第一光信号转换为电信号，提取所述电信号中的不同频率成分，所述电信号中所述不同频率成分的滚降系数与所述第一光信号中对应频率成分的滚降系数相同，所述滚降系数为信道中纯信号的非中心频率成分的功率与中心频率成分的功率的比值；测量所述不同频率成分的功率；根据所述不同频率成分的功率和滚降系数，确定所述待测信道的光信噪比。该方法能够高准确度的确定待测信道的光信噪比。

公开(公告)号：WO2015168013A1

公开(公告)日：2015-11-05

申请号：PCT/US2015/027779

申请日：2015-04-27

Applicant: XTERA COMMUNICATIONS, INC.

Inventor： PELOUCH, Wayne S. ,  WEBB, Stephen M. ,  ELLISON, John G.

IPC: H04B10/077 ,  H01S3/094 ,  H01S3/30 ,  H04B10/291

CPC classification number: H04B10/07953 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/0777 ,  H04B10/2504 ,  H04B10/2916 ,  H04J14/02

Abstract: An optical communication link that includes two nodes interconnected by an optical channel that comprises optical fiber(s), and that is used to communicate an optical signal comprising multiple optical signal wavelengths. The first node provides an optical signal onto the optical channel towards the second node, or receives an optical signal from the optical channel from the second node. A Raman pump provides Raman pump power into the optical fiber of the optical channel to thereby perform Raman amplification of the optical signal in the optical fiber. The second node determines a quality measurement of at least of optical wavelength signals transmitted by the first node to the second node. The second node also transmits information from the quality measurement back to the first node. A controller at the first node controls at least one parameter of the Raman pump in response to this transmitted information.

Abstract translation: 一种光通信链路，其包括通过包括光纤的光信道互连的两个节点，并且用于传送包括多个光信号波长的光信号。 第一节点向光通道向第二节点提供光信号，或从第二节点接收来自光信道的光信号。 拉曼泵向光通道的光纤提供拉曼泵浦功率，从而对光纤中的光信号进行拉曼放大。 第二节点确定至少由第一节点发送到第二节点的光波长信号的质量测量。 第二节点还将信息从质量测量发送回第一节点。 第一节点处的控制器响应于所发送的信息来控制拉曼泵的至少一个参数。

公开(公告)号：WO2015077924A1

公开(公告)日：2015-06-04

申请号：PCT/CN2013/087872

申请日：2013-11-26

Applicant: 华为技术有限公司

Inventor： 赵臻青 ,  李昂 ,  胡中华

IPC: H04B10/07

CPC classification number: H04B10/0775 ,  H04B10/07953

Abstract: 　本发明实施例提供了一种光信噪比的测量方法及装置，所述方法包括：获得待测光信号的第一光信噪比；获得参考信号的功率变化参数；其中，所述参考信号所在通道与所述待测光信号所在通道位于同一光纤；依据所述参考信号的功率变化参数，获得修正量；依据所述修正量对所述第一光信噪比进行调整，以获得所述待测光信号的第二光信噪比。本发明实施例提供的技术方案，用以实现测量到更加准确的光信噪比。

公开(公告)号：WO2015053675A1

公开(公告)日：2015-04-16

申请号：PCT/SE2013/051342

申请日：2013-11-15

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： DAHLFORT, Stefan

IPC: H04B10/079 ,  H04B10/50 ,  H04J14/02

CPC classification number: H04B10/07953 ,  H04B10/07957 ,  H04B10/2503 ,  H04B10/2507 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02

Abstract: Example embodiments presented herein are directed towards a communications controller, and corresponding method therein, for wavelength control of a first and second channel. The first and second channels are bidirectional and adjacent to one another in a single fiber in a Dense Wavelength Division Multiplexing (DWDM) based system.

Abstract translation: 这里呈现的示例性实施例针对通信控制器及其中的相应方法，用于第一和第二信道的波长控制。 在基于密集波分复用（DWDM）的系统中，第一和第二通道是双向的并且在单个光纤中彼此相邻。