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51. 发明公开

EP1738511A4 WIDEBAND ENHANCED DIGITAL INJECTION PREDISTORTION SYSTEM AND METHOD 有权
标题翻译：改进的数字宽带注入预处理系统和方法
公开(公告)号：EP1738511A4
公开(公告)日：2010-05-26
申请号：EP05722448
申请日：2005-01-18
申请人： POWERWAVE TECHNOLOGIES INC
发明人： COVA ARMANDO , CARICHNER SCOTT
IPC分类号： H03F1/32 , H04K1/02 , H04L25/03
CPC分类号： H03F1/3252 , H03F1/3247 , H03F1/3294 , H03F2200/102 , H03F2200/336

52. 发明公开

EP1749359A4 DIGITAL PREDISTORTION SYSTEM AND METHOD FOR HIGH EFFICIENCY TRASMITTERS 失效转让
标题翻译：数字预失真和高效率STATION方法
公开(公告)号：EP1749359A4
公开(公告)日：2010-05-19
申请号：EP05713947
申请日：2005-02-23
申请人： POWERWAVE TECHNOLOGIES INC
发明人： COVA ARMANDO
IPC分类号： H03F1/32 , H04K1/02 , H04L25/03
CPC分类号： H03F1/3294 , H03F1/3258 , H03F2201/3209 , H03F2201/3224 , H04L25/03343

53. 发明公开

EP1500007A4 BLIND SOURCE SEPARATION UTILIZING A SPATIAL FOURTH ORDER CUMULANT MATRIX PENCIL 有权
标题翻译：盲源分离使用空间累积量矩阵PENCILS四阶
公开(公告)号：EP1500007A4
公开(公告)日：2009-09-02
申请号：EP03719744
申请日：2003-04-14
申请人： HARRIS CORP
发明人： DISHMAN JOHN F , MARTIN PATRICK G , BEADLE EDWARD RAYMOND
IPC分类号： G10L21/02 , G01S3/74 , G06K9/00 , G06K9/62 , H04B1/707 , H04K1/00 , H04K1/02 , G06F17/40 , H04B15/00
CPC分类号： H04B1/707 , G01S3/74 , G06K9/0057 , G06K9/624 , H04B1/71052 , H04K1/02
摘要： Blind source separation (BSS) of statistically independent signals with low signal-to-noise plus interference ratios under a narrowband assumption utilizes cumulants in conjunction with spectral estimation of the signal subspace to perform the blind separation. The BSS technique utilizes a higher-order statistical method, specifically fourth-order cumulants, with the generalized eigen analysis of a matrixpencil (13) to blindly separate a linear mixture of unknown, statistically independent, stationary narrowband signals at a low signal-to-noise plus interference ratio having the capability to separate signals in spatially and/or temporally correlated Gaussian noise. This BSS provides the ability to blindly separate signals in situations where no second-order technique has been found to perform the blind separation satisfactorily, for example, at a low signal-to-noise ratio when the number of sources equals the number of sensors or when the noise is spatially and temporally colored.

54. 发明公开

EP2034648A1 Method to secure the upstream data transmission in an optical network 审中-公开
标题翻译：在einem optischen Netzwerk的Verfahren zur Sicherung derAufwärtsdatenübertragung
公开(公告)号：EP2034648A1
公开(公告)日：2009-03-11
申请号：EP07017666.4
申请日：2007-09-10
申请人： Nokia Siemens Networks Oy
发明人： Hajduczenia, Marek , Inacio, Pedro Ricardo Morais , Monteiro, Paulo , Morais, Rui
IPC分类号： H04J14/02 , H04K1/02 , H04K3/00
CPC分类号： H04J14/0226 , H04J14/0227 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04K3/41 , H04K3/42 , H04K3/43 , H04K3/45 , H04K3/84 , H04K2203/14 , H04N7/17309 , H04N21/437 , H04N21/6156
摘要： The invention is related to A method to secure a confidential data transmission in the upstream direction of a point-to-multipoint optical network of optical lines, on which the data is transmitted upstream and downstream in different wavelength ranges (λd, λu), said optical network comprising an optical line terminal (OLT), at least one splitter (SP) and multiple optical network units (ONU), characterized in that an additional disturbing signal (λt) is emitted downstream with a wavelength in the range of the upstream data transmission which superimposes with unwanted downstream reflections (λr) of the upstream data transmission.
摘要翻译：本发明涉及一种用于确保光线路的点对多点光网络的上游方向上的机密数据传输的方法，其中数据在不同波长范围（»d，»u）上下游传输，所述光网络包括光线路终端（OLT），至少一个分路器（SP）和多个光网络单元（ONU），其特征在于，附加的干扰信号（t）被发射到下游，波长在上游数据传输与上游数据传输的不必要的下游反射（»）叠加。

55. 发明公开

EP1966923A2 RADIO FREQUENCY TRANSMITTER AND METHOD THEREFOR 审中-公开
标题翻译：射频发射机及其方法
公开(公告)号：EP1966923A2
公开(公告)日：2008-09-10
申请号：EP06846802.4
申请日：2006-12-23
申请人： Crestcom, Inc.
发明人： MCCALLISTER, Ronald Duane
IPC分类号： H04K1/02
CPC分类号： H04B1/0075 , H03F1/3247 , H03F1/34 , H03F3/24 , H04B1/0475 , H04B2001/0433
摘要： An RF transmitter (10) is configured to transmit either wideband multichannel modulations or narrowband multichannel modulations in a variety of licensed frequency bands (70) using a single set of hardware. For narrowband modulations, a digital IF upconversion stage is performed so that, after upconversion to RF, image signals 74 are sufficiently displaced from the licensed frequency band (70) so as to be filtered off. For wideband modulations, no IF modulation stage occurs, and a direct upconversion takes place from baseband to RF. LO leakage is cancelled using a negative feedback loop that combines a digital DC signal with a communication signal (26, 52) prior to a direct or final analog upconversion stage (62).

56. 发明公开

EP1929634A2 APPARATUS AND METHOD FOR CALIBRATING MIXER OFFSET 审中-公开
标题翻译：用于校准混频器的方法和装置OFFSET
公开(公告)号：EP1929634A2
公开(公告)日：2008-06-11
申请号：EP06815238.8
申请日：2006-09-22
申请人： CYPRESS SEMICONDUCTOR CORPORATION
发明人： GEHRING, Mark, R. , JENSEN, Brent, R.
IPC分类号： H03M1/62 , H04B17/00 , H04K1/02
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D2200/0047
摘要： A circuit including a subcircuit (12) having differential signals [N7, N8 ), and a feedback circuit (14) coupled to the subcircuit. The feedback circuit is configured to measure an offset between the differential signals, to generate a calibration signal (61) in response to the measurement and to reduce the offset in response to the calibration signal.

57. 发明公开

EP1901467A1 Verfahren und System zur Übertragung von vertraulichen und nicht vertraulichen Daten 有权
标题翻译：方法和系统，用于发送机密和非机密数据
公开(公告)号：EP1901467A1
公开(公告)日：2008-03-19
申请号：EP07017961.9
申请日：2007-09-13
申请人： FREQUENTIS NACHRICHTENTECHNIK GESELLSCHAFT m.b.H.
发明人： Mohnl, Gerald, Dipl.-Ing. , Fuchsgruber, Rupert, Dipl.-Ing.
IPC分类号： H04K1/02 , H04L29/06
CPC分类号： H04K1/02 , H04L63/104
摘要： Die Erfindung betrifft ein Verfahren und ein System zur Übertragung von vertraulichen und nicht vertraulichen Datensätzen zwischen Eingabeeinheiten (1,1') und Ausgabeeinheiten (3,3') von Kommunikationssystemen, wobei das Kommunikationssystem Eingabeeinheiten (1) für vertrauliche Datensätze und Eingabeeinheiten (1') für nicht vertrauliche Datensätze und Ausgabeeinheiten (3) für vertrauliche Datensätze und Ausgabeeinheiten (3') für nicht vertrauliche Datensätze umfasst.
Erfindungsgemäß ist vorgesehen, dass über eine Datenverteilungseinheit (2) die den Eingabeeinheiten (1) für vertrauliche Datensätze aufgegebenen, vertrauliche Informationen enthaltenden Datensätze an die Ausgabeeinheiten (3) für vertrauliche Informationen enthaltende Datensätze und die den Eingabeeinheiten (1') für nicht vertrauliche Datensätze aufgegebenen, nicht vertrauliche Informationen enthaltenden Datensätze an die Ausgabeeinheiten (3') für nicht vertrauliche Informationen enthaltende Datensätze weitergeleitet werden, und dass die beiden Arten von Datensätzen unterschiedlich markiert werden und die unterschiedlich markierten Datensätze in dieser Form über das Datenverteilungssystem (2) an die der Markierung nach der jeweiligen Eingabeeinheit zugeordnete Ausgabeeinheit (3,3') weitergeleitet wird. Die Markierung erfolgt durch die Addition einer Spannung.
摘要翻译：该方法涉及不同标记机密和非机密的数据记录并在数据配送装置上传输的不同标记的记录（2），即切换，从输入单元respectivement输出单元。预先设定的电压供给直流要么到机密记录或在respectivement输入单元提供的非机密的记录。这些记录也都提供与信号的反式mitted到指定的输出单元在分配单元。记录被编码gemäß到3阶（HDB3）码高密度双极性的。因此独立claimsoft包括用于数据载体中存储的程序用于执行用于输入单元和通信系统的输出单元之间的机密性和非机密数据记录传输的方法。

58. 发明授权

EP0648031B1 Audio scrambling system for scrambling and descrambling audio signals 失效
标题翻译：装置用于音频信号的编码和解码
公开(公告)号：EP0648031B1
公开(公告)日：2007-08-01
申请号：EP94115938.6
申请日：1994-10-10
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
发明人： Ibaraki, Susumu , Katta, Noboru , Nakamura, Seiji , Murakami, Hiroki
IPC分类号： H04K1/02 , H04B1/66
CPC分类号： H04K1/02

59. 发明公开

EP1794917A2 METHOD AND APPARATUS FOR ENCRYPTION OF OVER-THE-AIR COMMUNICATIONS IN A WIRELESS COMMUNICATION SYSTEM 无效转让
标题翻译：方法和设备进行加密无线电通信领域中无线通信系统
公开(公告)号：EP1794917A2
公开(公告)日：2007-06-13
申请号：EP05813285.3
申请日：2005-09-12
申请人： MOTOROLA, INC.
发明人： KLOOS, Michael
IPC分类号： H04K1/02 , H04K1/04
CPC分类号： H04K1/006 , H04L9/003 , H04L9/0897 , H04L9/12 , H04L27/34 , H04L2209/80
摘要： A communication device (202) encrypts symbols at a physical layer in order to improve encryption of data transmitted over a wireless link. A symbol mapper (208) of the communication device receives a bit stream comprising multiple bits and maps the multiple bits to multiple symbols. An amplitude and phase adjuster (210) of the communication device receives the multiple symbols and encrypts the symbols by applying at least one of a phase shift and an amplitude adjustment to each symbol to produce multiple encrypted symbols for transmission over a wireless link. In another embodiment of the present invention, a communication device (250) is provided that is able to decrypt the encrypted symbols by applying at least one of a phase shift and an amplitude adjustment to each encrypted symbol that corresponds to a phase shift or an amplitude adjustment applied to the symbol by a transmitting communication device.

60. 发明公开

EP1774687A1 SYSTEM AND METHOD FOR DIGITAL TIMING ERROR CORRECTION IN A COMMUNICATIONS SYSTEM UTILIZING ADAPTIVE PREDISTORTION 审中-公开
标题翻译：系统及方法的通信系统数字钟误差修正的自适应预失真
公开(公告)号：EP1774687A1
公开(公告)日：2007-04-18
申请号：EP05778230.2
申请日：2005-07-08
申请人： Powerwave Technologies, Inc.
发明人： WOOD, Steven A. , JOHNSON, Ian , LUKE, Christian, G. , MANSELL, Adian , COPE, Mark
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H04L7/007 , H03F1/3241 , H04L7/0029 , H04L7/0062
摘要： A system and method for rapidly correcting the time difference between two signals is disclosed. In particular, a system and method for very rapidly correcting timing errors to the very high degree of accuracy required for digital predistortion adaptation is disclosed. The method is a signal processing technique, which can be performed in either hardware or software, which employs a correlation computation. The correlation results are processed in a manner that enables very rapid and accurate estimation of the time difference between the two signals.

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