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1. 发明公开

EP3395028A1 RECEIVER INCLUDING A CIRCULAR OR SQUARE LIMITER FOR THROUGH ACTIVE CONSTELLATION EXTENSION PAPR REDUCED TRANSMITTED SIGNAL 审中-公开
公开(公告)号：EP3395028A1
公开(公告)日：2018-10-31
申请号：EP16822664.5
申请日：2016-12-20
申请人： Thomson Licensing
发明人： PESIN, Anthony , FONTAINE, Loïc
IPC分类号： H04L27/38 , H04L27/26
CPC分类号： H04L27/3411 , H04L27/2624 , H04L27/2647 , H04L27/3809
摘要： PAPR reduction using Active Constellation Extension for both two dimensional (2D) non-square constellations (or non-uniform constellations like APSK) and for square constellations (usual QAM constellations) called one dimensional (1D). The receiver applies after the FFT for each symbols either a scalar limiter for 1D constellations or a constant modulus (circular) limiter for 2D constellations.

2. 发明公开

EP3241322A4 METHOD FOR SYMBOL COMPENSATION AND RECEIVER 审中-公开
公开(公告)号：EP3241322A4
公开(公告)日：2018-07-11
申请号：EP14909303
申请日：2014-12-29
申请人： TELEFONAKTIEBOLAGET LM ERICSSON PUBL
发明人： GUO ZHIHENG , LI SHAOHUA , SONG XINGHUA
IPC分类号： H04L27/26
CPC分类号： H04L27/2647 , H04L1/0079 , H04L27/26 , H04L27/2605 , H04L27/2613 , H04L27/3809
摘要： The present disclosure provides a method for symbol compensation. The method comprises, for a symbol consisting of a first portion and a second portion: estimating a length of the first portion; calculating an average power of the first portion and an average power of the second portion based on the length of the first portion; determining a relative scaling factor by which the average power of the first portion is scaled relative to that of the second portion; and compensating for the first portion based on the relative scaling factor.

3. 发明公开

EP3335314A1 DIGITAL DYNAMIC BIAS CIRCUIT 审中-实审
公开(公告)号：EP3335314A1
公开(公告)日：2018-06-20
申请号：EP16754111.9
申请日：2016-08-12
申请人： Viasat, Inc.
发明人： PETROVIC, Branislav , BREWER, Kenneth , BUER, Kenneth , KENT, Steve , JALALEDDINE, Sateh
IPC分类号： H03F1/32 , H04B1/04 , H04L27/26 , H03F1/02 , H03F3/19 , H03F3/24
CPC分类号： H03F1/02 , H02M3/158 , H03F1/0227 , H03F1/025 , H03F1/0266 , H03F1/3241 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/336 , H03F2200/435 , H03F2200/451 , H03F2200/511 , H03F2201/3215 , H04B1/0475 , H04B17/13 , H04B2001/045 , H04L27/2332 , H04L27/3809
摘要： Circuits and methods for reducing the cost and/or power consumption of a user terminal and/or the gateway of a telecommunications system (550) that may include a telecommunications satellite. Embodiments generate a dynamic input bias signal based upon an information signal envelope (which may be pre-distorted) which is applied to the signal input of a power amplifier (PA), thus reducing average power consumption. Other embodiments further include dynamic linearization (518) of the information signal, and/or variation of the supply voltage to the power amplifier (PA) as a function of the envelope of the information signal. Another aspect is a multi-stage “chained” feedback regulated voltage supply circuit for providing two or more output voltages that may be used as alternative supply voltages to a power amplifier (PA).

4. 发明授权

EP2817900B1 SYSTEM AND METHOD FOR BLIND EQUALIZATION AND CARRIER PHASE RECOVERY IN A QUADRATURE AMPLITUDE MODULATED SYSTEM 有权
公开(公告)号：EP2817900B1
公开(公告)日：2018-06-13
申请号：EP13710098.8
申请日：2013-02-05
申请人： Tyco Electronics Subsea Communications LLC
发明人： ZHANG, Hongbin , SUN, Yu , PILIPETSKII, Alexei, N.
IPC分类号： H04L27/38 , H04L27/22 , H04L27/00 , H04L25/03 , H04B10/69 , H04B10/61
CPC分类号： H04B10/613 , H04B10/614 , H04B10/616 , H04B10/6971 , H04L25/0305 , H04L27/0014 , H04L27/223 , H04L27/3809 , H04L27/3818 , H04L2027/0042
摘要： A system and method for blind equalization of a QAM signal. Equalization is achieved using an algorithm characterized by cost function that is a function the Euclidian distance, e.g. the minimum Euclidian distance, between points of the constellation associated with the QAM signal, i.e. the distance between symbols.

5. 发明公开

EP3136504A1 GAIN DISTRIBUTION IN COMPACT HIGH GAIN PHASED ARRAY ANTENNA SYSTEMS AND METHODS 有权转让
标题翻译： VERSTÄRKUNGSVERTEILUNG在SYSTEMEN MIT PHASIDSTEUERTER ANTENNENGRUPPE MIT HOHERVERSTÄRKUNGSOWIE VERFAHREN
公开(公告)号：EP3136504A1
公开(公告)日：2017-03-01
申请号：EP16185494.8
申请日：2016-08-24
申请人： The Boeing Company
发明人： BONEBRIGHT, Rodney K. , STEEDS, Mark W. , JEROMA, Paul E.
IPC分类号： H01Q1/28 , H01Q21/00 , H01Q21/06 , H01Q3/26
CPC分类号： H04L27/3809 , H01Q1/28 , H01Q3/26 , H01Q21/0025 , H01Q21/0087 , H01Q21/061 , H04L27/2647
摘要： Systems and methods according to one or more embodiments are provided for a distributed gain function. The distributed gain function may be implemented, for example, as a second amplification stage to maintain amplification in an RF distribution network (218a, 218b, 220) of a compact high gain phased array antenna system. In one example, a system comprises a plurality of element circuits (213), each coupled to one or more antenna elements (536). Each element circuit (213) comprises a first amplification stage. A distribution network (218a, 218b, 220) configured to couple the plurality of element circuits (213). A distributed gain circuit (217) coupled to the plurality of element circuits (213) and the distribution network (218a, 218b, 220), wherein the distributed gain circuit (217) comprises a second amplification stage. The antenna elements (536) and the distribution network (218a, 218b, 220) are integrated in a substantially planar circuit board (539) and the plurality of element circuits (213) are coupled to the circuit board (539). Additional systems and methods are also provided.
摘要翻译：根据一个或多个实施例的系统和方法被提供用于分布式增益功能。分布式增益功能可以例如实现为在紧凑型高增益相控阵天线系统的RF分配网络（218a，218b，220）中保持放大的第二放大级。在一个示例中，系统包括多个元件电路（213），每个元件电路耦合到一个或多个天线元件（536）。每个元件电路（213）包括第一放大级。配置网络（218a，218b，220），被配置为耦合所述多个元件电路（213）。耦合到所述多个元件电路（213）和所述分配网络（218a，218b，220）的分布式增益电路（217），其中所述分布式增益电路（217）包括第二放大级。天线元件（536）和分配网络（218a，218b，220）集成在基本上平面的电路板（539）中，并且多个元件电路（213）耦合到电路板（539）。还提供了附加的系统和方法。

6. 发明公开

EP3021501A1 LIGHT COMMUNICATION SYSTEM, LIGHT RECEIVER, LIGHT RECEIVER CONTROL METHOD, AND NONTEMPORARY COMPUTER READABLE MEDIUM 有权
标题翻译：光传输系统，光接收器接收器灯控制程序和非暂时性的计算机可读介质
公开(公告)号：EP3021501A1
公开(公告)日：2016-05-18
申请号：EP14823778.7
申请日：2014-05-26
申请人： NEC Corporation
发明人： HARA, Yasushi
IPC分类号： H04B10/61 , H04B10/2507 , H04L27/22
CPC分类号： H04B10/2507 , H04B10/5561 , H04B10/612 , H04B10/614 , H04B10/616 , H04B10/6161 , H04L27/2096 , H04L27/3809
摘要： Present invention provides an optical communication system that controls reception sensitivity of an optical receiver. The communication system(100) according to the present invention comprising: an optical transmitter(1) to which an transmission signal is input, and which modulates the transmission signal to an optical signal and transmits the optical signal; and an optical receiver(2) that receives the optical signal and demodulates the optical signal to an transmission signal. And the optical receiver(2) includes a photoelectric conversion means(10) for converting the optical signal into an analog electric signal, a conversion and demodulation means(25) for converting the analog electric signal into a digital signal and demodulating the signal to the transmission signal, and an amplitude control means(102) for controlling amplitude of the analog electric signal, and the amplitude control means(102) controls the amplitude of the analog electric signal in accordance with wavelength dispersion of the optical signal.

7. 发明授权

EP2506428B1 Technique for automatic gain control 有权
标题翻译：技术自动增益控制
公开(公告)号：EP2506428B1
公开(公告)日：2015-06-03
申请号：EP11002640.8
申请日：2011-03-30
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Wilhelmsson, Leif , Lindoff, Bengt
IPC分类号： H03G3/30 , H04L27/26 , H04L27/38
CPC分类号： H04B1/123 , H03G3/3052 , H03G3/3078 , H04L27/2647 , H04L27/3809

8. 发明授权

EP1810433B1 System and method for forward path gain control in a digital predistortion linearized transmitter 失效转让
标题翻译：系统和方法，用于转发路径增益控制在一个digitalvorverzerrten线性发射机
公开(公告)号：EP1810433B1
公开(公告)日：2012-11-28
申请号：EP05812850.5
申请日：2005-10-12
申请人： Powerwave Technologies, Inc.
发明人： LUKE, Christian G. , JOHNSON, Ian , COPE, Mark , MANSELL, Adrian , WOOD, Steven, A.
IPC分类号： H04K1/02 , H04B7/00 , H03F1/26
CPC分类号： H04L27/3809

9. 发明公开

EP2381593A1 Power adjustment of in-phase and quadrature components at a coherent optical receiver 有权转让
标题翻译：一个相干光接收器的同相和正交分量的功率设定
公开(公告)号：EP2381593A1
公开(公告)日：2011-10-26
申请号：EP10305415.1
申请日：2010-04-21
申请人： Alcatel Lucent
发明人： Weisser, Stefan , Cucchi, Silvio , Constantini, Carlo , Kaneda, Noriaki , Leven, Andreas
IPC分类号： H04B10/148 , H04B10/158 , H03G3/30 , H04L27/22
CPC分类号： H04B10/616 , H03G3/3084 , H04B10/60 , H04B10/613 , H04B10/6931 , H04L27/2096 , H04L27/3809 , H04L27/3818
摘要： It is disclosed an optical coherent receiver for an optical communication network. The optical coherent receiver is configured to receive a modulated optical signal and to process it for generating an in-phase component and a quadrature component. The optical coherent receiver comprises a power adjuster in turn comprising a multiplying unit and a retroactively connected digital circuit. The multiplying unit is configured to multiply the in-phase and quadrature components by in-phase and quadrature gains, respectively, thereby providing power-adjusted in-phase and quadrature components. The digital circuit is configured to compute: a common gain indicative of a sum of the powers of the power-adjusted in-phase and quadrature components; a differential gain indicative of a difference between the powers of the power-adjusted in-phase and quadrature components; and the in-phase and quadrature gains as a product and a ratio, respectively, between the common gain and the differential gain.
摘要翻译：它是盘上游离缺失光相干接收机在光通信网络。光相干接收机被配置成接收调制光信号，并处理它，用于产生同相分量和正交分量。的光相干接收机依次包括功率调整器，其包括一个乘法单元和追溯连接的数字电路。乘法单元被配置为通过在同相和正交增益，乘以同相和正交分量分别，从而提供功率调整同相和正交分量。数字电路被配置为计算：表示所述功率的总和的公共增益经过功率调整的同相和正交分量; 指示的功率之间的差的差分增益经过功率调整的同相和正交分量; 和同相和正交增益作为产品和的比率，分别为通用增益和微分增益之间。

10. 发明授权

EP2022170B1 MODULATION DEPENDENT AUTOMATIC GAIN CONTROL 有权
标题翻译：依赖于调制的自动增益控制
公开(公告)号：EP2022170B1
公开(公告)日：2011-08-10
申请号：EP07761360.2
申请日：2007-04-26
申请人： Wi-LAN Inc.
发明人： SUTTON, Todd
IPC分类号： H03G3/30
CPC分类号： H04L27/3809 , H03G3/3052 , H04L27/0008
摘要： Automatic gain control (AGC) methods and apparatus that implement a dynamically variable AGC setpoint. The variable AGC setpoint can be determined based in part on the type of modulation used to convey information to the receiver. The AGC setpoint can be set higher than a nominal setpoint for higher order modulation types and can be lower than the nominal setpoint for low order modulation types. The manner in which gain is adjusted can also depend on the modulation type. The gains can be increased according to a front to back priority. The gains can be decreased in a priority that is based on the modulation type. For lower order modulation types, the gain controller can decrease gain according to a back to front priority. For higher order modulation types, the gain controller can maintain linearity of front end amplifiers prior to decreasing gain according to a back to front priority.

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