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1. 发明授权

US07826569B2 Ingress noise reduction in a digital receiver 有权
标题翻译：数字接收机中的入口噪声降低
公开(公告)号：US07826569B2
公开(公告)日：2010-11-02
申请号：US12106708
申请日：2008-04-21
申请人： Ambroise Popper , Fabien Buda , Hikmet Sari
发明人： Ambroise Popper , Fabien Buda , Hikmet Sari
IPC分类号： H03D1/04
CPC分类号： G11B20/22 , H04B1/123 , H04N7/102
摘要： The invention provides a device for reducing ingress noise in a digital signal, comprising a noise predictor for predicting an amount of ingress noise in the digital signal based on past samples of the ingress noise, and a subtractor for subtracting the predicted amount of ingress noise from the digital signal. Channel distortion is compensated for by a noise-independent equalizer, such as a ZF equalizer, placed upstream of the noise predictor. The device may be incorporated, for example, in a cable modem termination system (CMTS) of an hybrid fiber/coax (HFC) network.
摘要翻译：本发明提供了一种用于减少数字信号中的入噪声的装置，包括：噪声预测器，用于根据进入噪声的过去样本预测数字信号中的入噪声量;以及减法器，用于从数字信号。信道失真由噪声独立的均衡器（例如ZF均衡器）补偿，放置在噪声预测器的上游。该装置可以并入例如混合光纤/同轴电缆（HFC）网络的电缆调制解调器终端系统（CMTS）中。

2. 发明申请

US20090003372A1 INGRESS NOISE REDUCTION IN A DIGITAL RECEIVER 有权
标题翻译：数字接收机中的降噪噪声
公开(公告)号：US20090003372A1
公开(公告)日：2009-01-01
申请号：US12106708
申请日：2008-04-21
申请人： Ambroise Popper , Fabien Buda , Hikmet Sari
发明人： Ambroise Popper , Fabien Buda , Hikmet Sari
IPC分类号： H04J3/00 , H04B1/10 , H04L27/01
CPC分类号： G11B20/22 , H04B1/123 , H04N7/102
摘要： The invention provides a device for reducing ingress noise in a digital signal, comprising a noise predictor for predicting an amount of ingress noise in the digital signal based on past samples of the ingress noise, and a subtractor for subtracting the predicted amount of ingress noise from the digital signal. Channel distortion is compensated for by a noise-independent equalizer, such as a ZF equalizer, placed upstream of the noise predictor. The device may be incorporated, for example, in a cable modem termination system (CMTS) of an hybrid fiber/coax (HFC) network.
摘要翻译：本发明提供了一种用于减少数字信号中的入噪声的装置，包括：噪声预测器，用于根据入侵噪声的过去采样来预测数字信号中的入噪噪声量;以及减法器，用于减去预测的进入噪声量数字信号。信道失真由噪声独立的均衡器（例如ZF均衡器）补偿，放置在噪声预测器的上游。该装置可以并入例如混合光纤/同轴电缆（HFC）网络的电缆调制解调器终端系统（CMTS）中。

3. 发明申请

US20070019767A1 Method and system for synchronizing a base station of a wireless communication system and a subscriber communication equipment 有权
标题翻译：用于使无线通信系统的基站与用户通信设备同步的方法和系统
公开(公告)号：US20070019767A1
公开(公告)日：2007-01-25
申请号：US11477916
申请日：2006-06-30
申请人： Fabien Buda , Emmanuel Lemois , Bertrand Debray
发明人： Fabien Buda , Emmanuel Lemois , Bertrand Debray
IPC分类号： H04L7/00
CPC分类号： H04L7/0029
摘要： The method for synchronising a base station of a wireless communication system and a subscriber communication equipment located in the coverage area of the base station comprises the steps of compensating a sampling frequency offset in the subscriber equipment by interpolating input and/or output signals of a radio frequency part (30) of the communication equipment to generate samples corresponding to the original symbol timing of the base station, and compensating the carrier frequency offset from the estimate of the sampling clock error.
摘要翻译：用于同步无线通信系统的基站和位于基站的覆盖区域中的用户通信设备的方法包括以下步骤：通过内插无线电的输入和/或输出信号来补偿用户设备中的采样频率偏移通信设备的频率部分（30）产生与基站的原始符号定时相对应的样本，并且从采样时钟误差的估计中补偿载波频率偏移。

4. 发明授权

US07142620B2 Multiple input, multiple output channel, digital receiver tuner 失效
公开(公告)号：US07142620B2
公开(公告)日：2006-11-28
申请号：US09974030
申请日：2001-10-10
申请人： Fabien Buda
发明人： Fabien Buda
IPC分类号： H04B7/10 , H04B3/00
CPC分类号： H04N21/4263 , H03D3/006 , H03D3/007 , H04B1/0003 , H04B1/406 , H04N5/4401 , H04N5/50 , H04N7/17309 , H04N21/4383
摘要： The present invention teaches a compact and highly integrated multiple-channel digital tuner and receiver architecture, suitable for widespread field deployment, wherein each receiver demodulator channel may be remotely, automatically, dynamically, and economically configured for a particular cable, carrier frequency, and signaling baud-rate, from an option universe that includes a plurality of input cables, a plurality of carrier frequencies, and a plurality of available baud-rates. A multiple coax input, multiple channel output, digital tuner is partitioned into a multiple coax input digitizer portion and a multiple channel output front-end portion. The digitizer portion consists of N digitizers and accepts input signals from N coax cables and digitizes them with respective A/D converters. The front-end portion consists of M front-ends and provides M channel outputs suitable for subsequent processing by M respective digital demodulators. In a first clock domain, a fixed predetermined A/D sampling rate is chosen to provide oversampling of the inputs by a common integer multiple of all the symbol rates of interest. A plurality other clock domains operate at selectable sub-multiples of the first domain as required to deliver a constant number of symbol samples at the output of each front-end. At the input to each of the M front-ends is a respective input selector coupled to each of the N streams of digitized input data followed by a digital signal scaler that dynamically scales the selected incoming stream of digitized input data as a function of the signal power of the channel's associated carrier.

5. 发明授权

US08559550B2 Method for transmitting a sequence of symbols for exploiting transmit diversity 有权
标题翻译：用于发送用于利用发射分集的符号序列的方法
公开(公告)号：US08559550B2
公开(公告)日：2013-10-15
申请号：US12489213
申请日：2009-06-22
申请人： Fabien Buda , Bertrand Muquet , Serdar Sezginer
发明人： Fabien Buda , Bertrand Muquet , Serdar Sezginer
IPC分类号： H04L27/00
CPC分类号： H04L1/0656 , H04L1/0056
摘要： An embodiment of a method for transmitting data through at least a channel in a wireless communication system, the method comprising at least the steps of: encoding the data by performing a forward-error-correction encoding, forming a sequence of symbols from the encoded data, forming an M-by-T coding matrix from said sequence of symbols, each column of the coding matrix comprising N different symbols of the sequence of symbols and M−N zeros, N being an integer equal at least to one, T representing the number of consecutive transmission intervals, M representing the total number of transmit antennas, and using the coding matrix for transmitting the sequence of symbols during the T consecutive transmission intervals, by transmitting one different column of the coding matrix at each transmission interval through the M transmit antennas, only N transmit antennas are enabled during a given transmission interval.
摘要翻译：一种用于在无线通信系统中通过至少一个信道发送数据的方法的实施例，所述方法至少包括以下步骤：通过执行前向纠错编码对所述数据进行编码，从编码数据形成符号序列，从所述符号序列形成M-by-T编码矩阵，所述编码矩阵的每列包括所述符号序列和MN零的N个不同符号，N为等于至少一个的整数，T表示连续发送间隔，M表示发送天线的总数，并且在T个连续发送间隔期间使用用于发送符号序列的编码矩阵，通过M个发送天线在每个发送间隔发送编码矩阵的一个不同列，在给定的传输间隔期间只有N个发射天线被使能。

6. 发明申请

US20120134322A1 CELL SEARCH METHOD FOR A DOWNLINK CHANNEL OF AN OFDMA TRANSMISSION SYSTEM 有权
标题翻译：用于OFDMA传输系统的下行链路信道的小区搜索方法
公开(公告)号：US20120134322A1
公开(公告)日：2012-05-31
申请号：US13297930
申请日：2011-11-16
申请人： Fabien Buda , Joséphine Hus
发明人： Fabien Buda , Joséphine Hus
IPC分类号： H04W72/02
CPC分类号： H04J11/0069 , H04J11/0083 , H04J11/0086 , H04J11/0093 , H04L27/2601 , H04W48/16
摘要： A cell search method in a multiple carrier wireless network includes a step of trying to select, among a list of candidate couples [carrier frequency; bandwidth], at least one candidate associated with at least one cell of the multiple carrier wireless network. The cell search method includes: a step of obtaining and ordering an initial list of possible candidate couples [carrier frequency; bandwidth] according to the multiple carrier wireless network; a step of reducing the initial list, delivering a reduced list, the reduced list including only candidates compatible with a predetermined communication mode of the multiple carrier wireless network, through a differential cross correlation of the candidate couples [carrier frequency; bandwidth] of the initial list; a cell search step in which a cross-correlation is performed by testing all time/frequency hypothesis for at least one candidate of the reduced list of candidates, delivering synchronisation information.
摘要翻译：多载波无线网络中的小区搜索方法包括：在候选对象列表中选择[载波频率; 带宽]，与多载波无线网络中的至少一个小区相关联的至少一个候选者。小区搜索方法包括：获得和排序可能的候选对象的初始列表的步骤[载波频率; 带宽]根据多载波无线网络; 通过候选对的差分互相关，减少初始列表，递送减少列表的缩减列表，包括仅与多载波无线网络的预定通信模式兼容的候选者[载波频率; 带宽]的初始列表; 小区搜索步骤，其中通过测试候选的缩减列表的至少一个候选的所有时间/频率假设来执行互相关，从而传递同步信息。

7. 发明授权

US08149970B2 Multiple input, multiple output channel, digital receiver tuner 有权
标题翻译：多输入，多输出通道，数字接收机调谐器
公开(公告)号：US08149970B2
公开(公告)日：2012-04-03
申请号：US12491640
申请日：2009-06-25
申请人： Fabien Buda
发明人： Fabien Buda
IPC分类号： H04B1/10
CPC分类号： H04N21/4263 , H03D3/006 , H03D3/007 , H04B1/0003 , H04B1/406 , H04N5/4401 , H04N5/50 , H04N7/17309 , H04N21/4383
摘要： The present invention teaches a compact and highly integrated multiple-channel digital tuner and receiver architecture, suitable for widespread field deployment, wherein each receiver demodulator channel may be remotely, automatically, dynamically, and economically configured for a particular cable, carrier frequency, and signaling baud-rate, from an option universe that includes a plurality of input cables, a plurality of carrier frequencies, and a plurality of available baud-rates. A multiple coax input, multiple channel output, digital tuner is partitioned into a multiple coax input digitizer portion and a multiple channel output front-end portion. The digitizer portion consists of N digitizers and accepts input signals from N coax cables and digitizes them with respective A/D converters. The front-end portion consists of M front-ends and provides M channel outputs suitable for subsequent processing by M respective digital demodulators. In a first clock domain, a fixed predetermined A/D sampling rate is chosen to provide oversampling of the inputs by a common integer multiple of all the symbol rates of interest. A plurality other clock domains operate at selectable sub-multiples of the first domain as required to deliver a constant number of symbol samples at the output of each front-end. At the input to each of the M front-ends is a respective input selector coupled to each of the N streams of digitized input data followed by a digital signal scaler that dynamically scales the selected incoming stream of digitized input data as a function of the signal power of the channel's associated carrier.
摘要翻译：本发明教导了一种紧凑且高度集成的多通道数字调谐器和接收器架构，适用于广泛的现场部署，其中每个接收机解调器信道可以对于特定的电缆，载波频率和信号进行远程，自动，动态和经济地配置波特率，包括多个输入电缆，多个载波频率和多个可用波特率的选项范围。多个同轴电缆输入，多通道输出，数字调谐器被分割成多个同轴电缆输入数字转换器部分和多通道输出前端部分。数字转换器部分由N个数字转换器组成，并接受来自N个同轴电缆的输入信号，并将其与相应的A / D转换器进行数字化。前端部分由M个前端组成，并提供适合M个相应数字解调器后续处理的M通道输出。在第一时钟域中，选择固定的预定A / D采样率以通过所有符号利率的公共整数倍提供输入的过采样。多个其他时钟域在第一域的可选子倍数下操作，以便在每个前端的输出处递送恒定数量的符号样本。在M个前端中的每一个的输入端是相应的输入选择器，其耦合到数字化输入数据的N个流中的每一个，随后是数字信号缩放器，其根据信号动态地缩放所选择的数字化输入数据的输入流频道相关运营商的功率。

8. 发明授权

US07706823B2 Method and system for synchronizing a base station of a wireless communication system and a subscriber communication equipment 有权
标题翻译：用于使无线通信系统的基站与用户通信设备同步的方法和系统
公开(公告)号：US07706823B2
公开(公告)日：2010-04-27
申请号：US11477916
申请日：2006-06-30
申请人： Fabien Buda , Emmanuel Lemois , Bertrand Debray
发明人： Fabien Buda , Emmanuel Lemois , Bertrand Debray
IPC分类号： H04Q7/20
CPC分类号： H04L7/0029
摘要： A method of synchronizing a base station of a wireless communication system and a subscriber communication equipment located in the coverage area of the base station by compensating a sampling frequency offset in the subscriber equipment by interpolating input and/or output signals of a radio frequency part of the communication equipment to generate samples corresponding to the original symbol timing of the base station, and compensating the carrier frequency offset from the estimate of the sampling clock error.
摘要翻译：一种通过将用户设备的射频部分的输入和/或输出信号进行内插来补偿用户设备中的采样频率偏移来同步无线通信系统的基站和位于基站的覆盖区域中的用户通信设备的方法，所述通信设备产生对应于所述基站的原始符号定时的样本，以及从所述采样时钟误差的估计中补偿所述载波频率偏移。

9. 发明授权

US07106815B2 Ingress noise reduction in a digital receiver 失效
标题翻译：数字接收机中的入口噪声降低
公开(公告)号：US07106815B2
公开(公告)日：2006-09-12
申请号：US10120968
申请日：2002-04-10
申请人： Ambroise Popper , Fabien Buda , Hikmet Sari
发明人： Ambroise Popper , Fabien Buda , Hikmet Sari
IPC分类号： H04L25/08 , H04L27/22 , H04R3/20
CPC分类号： G11B20/22 , H04B1/123 , H04N7/102
摘要： The invention provides a device (D2) for reducing ingress noise in a digital signal, comprising a noise predictor (20) for predicting an amount of ingress noise in the digital signal (sn) based on past samples of the ingress noise, and a subtractor (21) for subtracting the predicted amount of ingress noise from the digital signal. Channel distortion is compensated for by a noise-independent equalizer (25), such as a ZF equalizer, placed upstream of the noise predictor (20). The device (D2) may be incorporated, for example, in a cable modem termination system (CMTS) of an hybrid fiber/coax (HFC) network.
摘要翻译：本发明提供了一种用于减少数字信号中的入噪声的装置（D 2），包括用于基于过去预测数字信号（s）中入侵噪声量的噪声预测器（20）入侵噪声的样本，以及用于从数字信号中减去预测入侵噪声量的减法器（21）。信道失真由位于噪声预测器（20）上游的无噪声均衡器（25）补偿，诸如ZF均衡器。装置（D 2）可以并入例如混合光纤/同轴电缆（HFC）网络的电缆调制解调器终端系统（CMTS）中。

10. 发明授权

US06442219B1 Simultaneous decoding and phase synchronization using the criterion of maximum likelihood 失效
标题翻译：使用最大似然准则进行同步解码和相位同步
公开(公告)号：US06442219B1
公开(公告)日：2002-08-27
申请号：US09284874
申请日：1999-04-22
申请人： Cyril Bertrand , Fabien Buda , Emmanuel Lemois
发明人： Cyril Bertrand , Fabien Buda , Emmanuel Lemois
IPC分类号： H03D100
CPC分类号： H04L25/03273 , H04L27/2332 , H04L2027/0067
摘要： A method of simultaneous phase synchronization and decoding that makes use of the maximum likelihood criterion is provided. The method is applied to signal packets received at a receiver, wherein the signals have been subjected to convolution encoding at the transmitter. The method consists of calculating branch metrics taking account firstly of firm decisions calculated on the received symbols and secondly of a magnitude that takes account of the phase error between the carrier of the signal and the local oscillator signal used at the receiver, the magnitude weighting the decision variables constituted by the complex digital components of the received symbols. This magnitude is equal to &Sgr;*k for each of the paths studied where: &Sgr;k=&Sgr;Nn=0rk−n·d*k−n.
摘要翻译：提供了利用最大似然准则的同步相位同步和解码的方法。该方法被应用于对在接收机处接收到的分组进行信号，其中信号已经在发射机处进行卷积编码。该方法包括计算分支度量，首先考虑在接收符号上计算的确定决策，其次考虑信号载波与接收机使用的本地振荡器信号之间的相位误差的幅度，幅度加权决策变量由接收符号的复数数字分量组成。对于所研究的每个路径，该幅度等于SIGMA * k：

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