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1. 发明公开

EP3297240A1 PHASE AMBIGUITY PROCESSING METHOD AND DEVICE FOR QUADRATURE AMPLITUDE MODULATION SIGNAL 有权
标题翻译：相位模糊调制信号的相位模糊处理方法及装置
公开(公告)号：EP3297240A1
公开(公告)日：2018-03-21
申请号：EP16795722.4
申请日：2016-03-14
申请人： ZTE Corporation
发明人： FEI, Aimei
IPC分类号： H04L27/38
CPC分类号： H04L27/3455 , H04B10/50 , H04J14/002 , H04J14/06 , H04L27/34 , H04L27/38 , H04L27/3827 , H04L27/3872
摘要： A phase ambiguity processing method and device for a quadrature amplitude modulation signal are provided. The phase ambiguity processing method includes: deciding symbols on a Y polarization state and an X polarization state of a received signal, and mapping to obtain first bit information, where the received signal includes a plurality of first signals; checking and analyzing the first bit information to generate a first check result; judging the first check result to obtain a judgment result as to whether the received signal has phase ambiguity; acquiring at least one of the plurality of first signals in the received signal when the judgment result indicates that the received signal has phase ambiguity; performing phase rotation on the first signal to obtain a second signal; and checking and analyzing the second signal, storing the second signal so that the first signal is replaced with the second signal for decoding processing if a check result is normal. A QAM signal is checked and judged, and error correction is carried out on the QAM signal when the QAM signal has phase ambiguity, such that the error rate of differential decoding of the QAM signal is reduced, system overhead is reduced, and system performance is improved.
摘要翻译：提供了一种用于正交幅度调制信号的相位模糊度处理方法和装置。所述相位模糊处理方法包括：判断接收信号的Y偏振态和X偏振态的符号，映射得到第一比特信息，所述接收信号包括多个第一信号; 检查并分析第一比特信息以产生第一检查结果; 判断第一检查结果以获得关于接收到的信号是否具有相位模糊性的判断结果; 当所述判断结果指示所述接收信号具有相位模糊时，获取所述接收信号中的所述多个第一信号中的至少一个; 对所述第一信号执行相位旋转以获得第二信号; 以及如果检查结果正常，则检查和分析第二信号，存储第二信号，使得第一信号被替换为用于解码处理的第二信号。 QAM信号被检查并被判断，并且当QAM信号具有相位模糊性时，对QAM信号执行纠错，使得QAM信号的差分解码的错误率被降低，系统开销被降低，并且系统性能是改进。

2. 发明公开

EP3096500A1 COMMUNICATION APPARATUS, DEMODULATION APPARATUS, CARRIER REPRODUCTION APPARATUS, PHASE ERROR COMPENSATION APPARATUS, PHASE ERROR COMPENSATION METHOD, AND STORAGE MEDIUM ON WHICH PHASE ERROR COMPENSATION PROGRAM HAS BEEN STORED 有权
标题翻译：通信设备中，解调，TANK再生装置中，相位误差补偿装置中，相位误差补偿的方法和其上具有相位误差补偿PROGRAM存储在存储设备
公开(公告)号：EP3096500A1
公开(公告)日：2016-11-23
申请号：EP15737729.2
申请日：2015-01-15
申请人： NEC Corporation
发明人： KAMIYA, Norifumi , SASAKI, Eisaku
IPC分类号： H04L27/38
CPC分类号： H04L27/3872 , H04L27/0014 , H04L2027/0067
摘要： [Problem] To enable a large-capacity, high-quality data communication that is excellent in bit error rate characteristic even in an adverse noise environment mainly caused by phase noises or thermal noises. [Solution] Included are: a first phase error detection filter that generates, on the basis of a forward sequence of received symbols, a first phase difference value and a first phase error estimated value; a second phase error detection filter that generates, on the basis of a backward sequence of received symbols, a second phase difference value and a second phase error estimated value; a phase error combination means that generates a third phase error estimated value on the basis of the first and second phase error estimated values and one of the first and second phase difference values; and a phase error compensation means that compensates the phase error of the received symbols in accordance with the third phase error estimated value.
摘要翻译： [问题]为了实现大容量，高质量的数据通信做，即使在不利的由相位噪声或热噪声主要是由于噪声环境具有优良的位误码率特性。 [解决方法]包含有：一第一相位误差检测滤波器做基因率，接收到的符号，第一相位差值和第一相位误差估计值的正向序列的基础上; 第二相位误差检测滤波器做基因率，接收到的符号，第二相位差值和第二相位误差估计值的向后序列的基础上; 相位误差组合bedeutet，DASS基因率三分之一的相位误差估计值的第一和第二相位误差的估计值的基础上和在第一和第二相位差值中的一个上; 和相位误差补偿bedeutet，DASS补偿所接收到的符号的雅舞蹈的相位误差与第三相位误差估计值。

3. 发明授权

EP2315405B1 Procédé et dispositif de détection d'une erreur de phase d'un signal modulé numériquement par déplacement de phase et/ou d'amplitude 有权
标题翻译：用于检测PSK相位误差或QAM调制信号的方法和装置
公开(公告)号：EP2315405B1
公开(公告)日：2013-06-05
申请号：EP10013721.5
申请日：2010-10-18
申请人： STMicroelectronics (Grenoble 2) SAS
发明人： Meyer, Jacques
IPC分类号： H04L27/22 , H04L27/34 , H04L27/38
CPC分类号： H04L27/3872 , H04L2027/0067

4. 发明公开

EP2348684A1 DVB-C2 generation and reception 有权
标题翻译： DVB-C2-Erzeugung und -Empfang
公开(公告)号：EP2348684A1
公开(公告)日：2011-07-27
申请号：EP11151408.9
申请日：2011-01-19
申请人： Sony Corporation
发明人： Muhammad, Nabil , Stadelmeier, Lothar , Robert, Jörg
IPC分类号： H04L27/26 , H04L27/36
CPC分类号： H04L27/2628 , H04B1/04 , H04L5/001 , H04L27/2634 , H04L27/265 , H04L27/367 , H04L27/3872
摘要： The present disclosure relates to DVB-C2 generation apparatus and methods for generating DVB-C2 transmission signals (s(t)) from DVB-C2 symbols, each comprising a plurality of DVB-C2 subcarriers, for transmission in a multi-carrier data transmission system. An embodiment of the proposed apparatus and method is adapted for multiplying the DVB-C2 symbols with a multiplication factor (M) for compensating common phase rotations of the DVB-C2 subcarriers of said DVB-C2 symbol, which could be introduced by mixing said complex time-domain samples of said DVB-C2 symbol from a baseband frequency up to a passband frequency by use of a mixing frequency ( f c ), for inverse discrete Fourier transforming a DVB-C2 symbol into complex time-domain samples, and for mixing said complex time-domain samples of said DVB-C2 symbol from a baseband frequency up to a passband frequency by use of said mixing frequency ( f c ) to obtain said DVB-C2 transmission signal (s(t)) .
摘要翻译：本公开涉及用于从DVB-C2符号生成DVB-C2传输信号（s（t））的DVB-C2生成装置和方法，每个DVB-C2符号包括多个DVB-C2子载波，用于在多载波数据传输系统。所提出的装置和方法的实施例适于将DVB-C2符号与乘法因子（M）相乘，用于补偿所述DVB-C2符号的DVB-C2子载波的公共相位旋转，其可以通过混合所述复合体通过使用混合频率（fc）从所述DVB-C2符号的基带频率到通带频率的时域样本，用于将DVB-C2符号逆离散傅立叶变换为复数时域采样，并且用于混合所述通过使用所述混频（fc）从所述基带频率直到通带频率的所述DVB-C2符号的复杂时域样本，以获得所述DVB-C2传输信号（s（t））。

5. 发明公开

EP2063597A3 Verfahren und Schaltungsanordnung zum Entscheiden eines Symbols beim Empfang von mit einem Quadratursignalpaar gekoppelten empfangenen Symbolen 审中-公开
标题翻译：的方法和电路用于决定符号当接收耦合到正交信号对所接收的符号
公开(公告)号：EP2063597A3
公开(公告)日：2010-09-08
申请号：EP08019824.5
申请日：2008-11-13
申请人： Trident Microsystems (Far East) Ltd.
发明人： Bock, Christian
IPC分类号： H04L27/38
CPC分类号： H04L27/3872
摘要： Die Erfindung bezieht sich auf ein Verfahren und eine Schaltungsanordnung zum Entscheiden eines Symbols (S) beim Empfang von mit einem Quadratursignalpaar (I, Q) gekoppelten empfangenen Symbolen. Zum Entscheiden eines Symbols beim Empfang eines Eingangssignals mit mit einem Quadratursignalpaar gekoppelten empfangenen Symbolen (S), bei dem zumindest einem solchen empfangenen Symbol Phasenrauschen (PN) und Gaußsches Rauschen (GN) überlagert sind, werden zu zumindest einem solchen empfangenen Symbol (S) sowohl das Phasenrauschen (PN) als auch das Gaußsche Rauschen (GN) bestimmt oder abgeschätzt werden. Vorteilhaft wird dies dadurch, dass beim Bestimmen oder Abschätzen des Phasenrauschens (PN) und des Gaußschen Rauschens (GN) zwischen dem Phasenrauschen (PN) und dem Gaußschen Rauschen unterschieden wird und ein Ergebnis des unterscheidenden Bestimmens oder Abschätzens zur Regelung von Empfangsparametern für Entscheidungen nachfolgend empfangener Symbole (S) verwendet wird. Insbesondere findet dabei eine Orthogonalisierung der gemessenen Werte des Phasenrauschens (PN) auf das Gaußsche Rauschen (GN) statt.

6. 发明公开

EP2141875A1 Receiver and method for frequency offset estimation based on correlation techniques 有权转让
标题翻译：根据相关技术接收器，用于频率偏移估算和相关的方法
公开(公告)号：EP2141875A1
公开(公告)日：2010-01-06
申请号：EP09162826.3
申请日：2009-06-16
申请人： THOMSON Licensing
发明人： Xiang, Juan , Zou, Li
IPC分类号： H04L27/26 , H04L27/38
CPC分类号： H04L27/2657 , H04L27/2605 , H04L27/2678 , H04L27/3872 , H04L2027/0095
摘要： The present invention provides a receiver for receiving digital signals including frames with a binary modulated cyclic preamble, comprising: means for correlating at least a part of a first cyclic preamble in a first frame and at least a part of a second cyclic preamble in a second frame, and for determining a carrier frequency offset based on the result of said correlation.
摘要翻译：本发明提供了一个接收机，用于接收包括具有二进制调制循环前缀的帧的数字信号，包括：用于在第一帧中进行相关的至少一个第一循环前缀的一部分，并且至少一个在第二的第二循环前置码的一部分帧，以及用于确定性采矿基于所述相关的结果的载波频率偏移。

7. 发明授权

EP1214823B1 DUAL AUTOMATIC GAIN CONTROL IN A QAM DEMODULATOR 有权
标题翻译：双自动增益控制一个QAM解调器
公开(公告)号：EP1214823B1
公开(公告)日：2006-06-21
申请号：EP00958002.8
申请日：2000-07-11
申请人： ATMEL CORPORATION
发明人： MAALEJ, Khaled , HAMMAN, Emmanuel , DEMOL, Amaury , LEVY, Yannick
IPC分类号： H04L27/38 , H03G3/20 , H03G3/00
CPC分类号： H04L1/0071 , H04L1/0057 , H04L7/0029 , H04L7/0058 , H04L27/3809 , H04L27/3827 , H04L27/3872 , H04L2027/0032 , H04L2027/0036 , H04L2027/0038 , H04L2027/0055 , H04L2027/0057 , H04L2027/0071 , H04L2027/0081
摘要： A QAM demodulator (99) having a first automatic gain control circuit (10) which outputs a first signal (94) that is a function of the received signal, the first signal being used to control the gain of an amplifier which supplies the input of an A/D converter (25), and a second automatic gain controller (20) which outputs a second signal derived from the QAM circuit after filtering, the second signal controlling the gain of a digital multiplier (210) which produces a signal which feeds into an equalizer (45) by way of a receive filter (40). The dual automatic gain control circuits (10, 20), situated before and after the receive filters (40), allow for better resistance to non-linearity caused by signals in adjacent channels. Additionally, the dual automatic gain control circuits allow for the amplification level of the signal to be limited before the demodulator to eliminate signal distortion and to be set to the correct level internally with digital gain. Also, there is no saturation of the A/D converter (25) since there is no QAM feedback to analog circuits. This architecture is particularly efficient in a variable rate transmission scheme.

8. 发明公开

EP0969640A3 Phase recovery with blind equalisation for dual mode CAP, QAM receivers 审中-公开
标题翻译：盲目均衡阶段的恢复与双方CAP和QAM模式接收器
公开(公告)号：EP0969640A3
公开(公告)日：2003-10-15
申请号：EP99304922.0
申请日：1999-06-23
申请人： LUCENT TECHNOLOGIES INC.
发明人： Garth, Lee McCandless
IPC分类号： H04L27/38 , H04L25/49 , H04L25/03
CPC分类号： H04L27/0012 , H04L25/03044 , H04L25/0305 , H04L25/4921 , H04L27/3872 , H04L2025/0342 , H04L2025/03509 , H04L2025/03617 , H04L2025/0363 , H04L2025/03732
摘要： A dual-mode receiver uses a hybrid cost function that provides for automatic constellation phase recovery regardless of whether a CAP signal or a QAM signal has been transmitted. In one embodiment, the receiver uses a hybrid cost function that is the superposition of a QAM-based cost function and a CAP-based cost function. In another embodiment, the receiver comprises an adaptive filter that alternates between a QAM-based cost function and a CAP-based cost function. In addition, a method is described that uses information about (a) the expected constellations, and (b) the values before and after a rotator of the receiver for deciding what type of signal is being received.

9. 发明授权

EP1201066B1 PHASE NOISE AND ADDITIVE NOISE ESTIMATION IN A QAM CARRIER RECOVERY CIRCUIT 有权
标题翻译： PHASE和层状噪声的甲QAM载波恢复电路估计
公开(公告)号：EP1201066B1
公开(公告)日：2003-09-10
申请号：EP01909286.5
申请日：2001-02-15
申请人： ATMEL CORPORATION
发明人： MAALEJ, Khaled , HAMMAN, Emmanuel , DEMOL, Amaury , LEVY, Yannick
IPC分类号： H04L27/38
CPC分类号： H04L27/3809 , H04L1/0057 , H04L1/0071 , H04L7/0029 , H04L27/3827 , H04L27/3872 , H04L2027/0032 , H04L2027/0036 , H04L2027/0038 , H04L2027/0055 , H04L2027/0057 , H04L2027/0071 , H04L2027/0081
摘要： A QAM demodulator having a carrier recovery circuit (50) that includes a phase estimation circuit (506) and an additive noise estimation circuit (507) which produces an estimation of the residual phase noise (518) and additive noise (519) viewed by the QAM demodulator. The phase noise estimation (518) is based on the least mean square error (512) between the QAM symbol (509) decided by a symbol decision circuit (508) and the received QAM symbol (504). The additive noise estimation is based on the same error as in the phase noise estimation (518), except that it is based only on QAM symbols having the minimum amplitude on the I and Q coordinates. The additive noise estimation (519) is not dependent on the phase of the signal, thus, is independent of the phase noise estimator.

10. 发明公开

EP1295430A2 DUAL BIT ERROR RATE ESTIMATION IN A QAM DEMODULATOR 审中-公开
标题翻译： DUAL BIT估计方法出错率一个QAM解调器
公开(公告)号：EP1295430A2
公开(公告)日：2003-03-26
申请号：EP01937795.1
申请日：2001-05-30
申请人： ATMEL CORPORATION
发明人： MAALEJ, Khaled , HAMMAN, Emmanuel , DEMOL, Amaury , LEVY, Yannick
IPC分类号： H04L1/20
CPC分类号： H04L27/3809 , H04L1/0057 , H04L1/0071 , H04L1/20 , H04L7/0029 , H04L27/3827 , H04L27/3872 , H04L2027/0032 , H04L2027/0036 , H04L2027/0038 , H04L2027/0055 , H04L2027/0057 , H04L2027/0071 , H04L2027/0081
摘要： A quadrature amplitude modulation type demodulator having a dual bit error rate estimator unit (70) that allows for high bit error rate measurements. The dual bit error rate estimator circuit (70) uses information pertaining to the number of corrected bytes from a forward error correction decoder (60) and the count of recognizable patterns of the frame over a sufficiently large number of frames. The two pieces of information can be compared at the bit error rate levels, where both the pattern recognition counter (62) and the FEC decoder (60) are able to output valid data. A comparison (710) between the two pieces of information provides a way to detect the type of noise which occurs on the network and makes it easier to correct problems in signal transmission.

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