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1. 发明授权

US11901933B2 System and method for providing sub-band whitening in the presence of partial-band interference 有权
公开(公告)号：US11901933B2
公开(公告)日：2024-02-13
申请号：US17734489
申请日：2022-05-02
申请人： Samsung Electronics Co., Ltd.
发明人： Mostafa Sayed Roshdy Ibrahim , Ruchen Duan , Wook Bong Lee , Minki Ahn , Hyun Bae Jeon
IPC分类号： H04B7/10 , H04B1/71 , H04B17/345 , H04B1/10 , H04L25/02 , H04L25/03
CPC分类号： H04B1/7102 , H04B1/10 , H04B17/345 , H04L25/022 , H04L25/03159
摘要： A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method includes deriving an estimated noise plus interference variance (NIVar) based on at least one legacy-long training field (LLTF) symbol from an LLTF signal; and updating an interference whitening (IW) factor by using a sub-band NIVar.

2. 发明申请

US20170366222A1 RECEIVER ARCHITECTURE FOR LINEAR MODULATION BASED COMMUNICATION SYSTEMS 审中-公开
公开(公告)号：US20170366222A1
公开(公告)日：2017-12-21
申请号：US15620208
申请日：2017-06-12
申请人： INSTITUT MINES-TELECOM / TELECOM BRETAGNE
发明人： Jérémy NADAL , Charbel ABDEL NOUR , Amer BAGHDADI
IPC分类号： H04B1/71 , H04L27/26
CPC分类号： H04B1/7102 , H04B2201/709718 , H04L27/2623 , H04L27/265 , H04L27/2698
摘要： A receiver for Filter Bank Multicarrier frequency spread signals such as FBMC, FBMC/OQAM, OFDM, comprises a linear phase rotation module adapted to introduce a linear phase rotation to a received time domain signal, a discrete Fourier transform and a Finite Impulse response digital filter. The coefficients of the digital filter define a shift of the frequency response of the prototype filter of the receiver, and the coefficients of the digital filter are fixed so as to compensate the linear phase rotation introduced by the filter. The frequency shift introduced may be equal to the reciprocal of a power of two of the modulation sub carrier spacing.

3. 发明授权

US09832062B2 Interference suppressing OFDM system for wireless communications 有权
公开(公告)号：US09832062B2
公开(公告)日：2017-11-28
申请号：US14814615
申请日：2015-07-31
申请人： AT&T Intellectual Property II, L.P.
发明人： Diakoumis Parissis Gerakoulis
IPC分类号： H04B1/00 , H04L27/26 , H04B1/10 , H04B1/71 , H04L5/00
CPC分类号： H04L27/265 , H04B1/109 , H04B1/71 , H04B1/7102 , H04B2201/70727 , H04B2201/7097 , H04L5/0016 , H04L27/2607 , H04L27/2627 , H04L27/2634 , H04L27/2657 , H04L27/2662
摘要： An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.

4. 发明授权

US08711674B2 Interference suppressing OFDM system for wireless communications 有权
标题翻译：用于无线通信的干扰抑制OFDM系统
公开(公告)号：US08711674B2
公开(公告)日：2014-04-29
申请号：US13711336
申请日：2012-12-11
申请人： AT&T Corp.
发明人： Diakoumis Gerakoulis
IPC分类号： H04J11/00
CPC分类号： H04L27/265 , H04B1/109 , H04B1/71 , H04B1/7102 , H04B2201/70727 , H04B2201/7097 , H04L5/0016 , H04L27/2607 , H04L27/2627 , H04L27/2634 , H04L27/2657 , H04L27/2662
摘要： An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
摘要翻译：用于抑制窄带干扰的点对点无线通信的IS-OFDM系统包括IS-OFDM发射机和IS-OFDM接收机，其中发射信号包括多个子载波，并且其中每个子载波包含多于一个和潜在的所有符号在给定的帧中传输。 IS-OFDM发送信号的数据速率等于通过使用P / S转换器的输入数据流的数据速率。

5. 发明授权

US08472576B2 Jammer canceller for power-line communication 有权
标题翻译：干扰器消除电力线路通信
公开(公告)号：US08472576B2
公开(公告)日：2013-06-25
申请号：US12478684
申请日：2009-06-04
申请人： Maher Umari , Kaveh Razazian , Victor V. Loginov
发明人： Maher Umari , Kaveh Razazian , Victor V. Loginov
IPC分类号： H04B1/10
CPC分类号： H04K3/228 , H04B1/7102 , H04B3/54 , H04B3/542 , H04L5/0007 , H04L5/0048 , H04L25/0228 , H04L25/085 , H04L27/2607 , H04L27/2655
摘要： An apparatus to process an input signal received via a power line in a power line communication system includes a jammer remover and a jammer detector. The jammer remover removes interference resulting from transmission of electricity and the input signal over the power line from the input signal. The jammer remover generates a jammer-canceled signal using an adaptive filtering procedure. The jammer detector is coupled to the jammer remover to detect the interference.
摘要翻译：用于处理通过电力线通信系统中的电力线接收的输入信号的装置包括干扰消除器和干扰检测器。干扰去除器消除了从输入信号通过电力线传输电力和输入信号的干扰。干扰消除器使用自适应滤波过程产生干扰消除信号。干扰检测器耦合到干扰去除器以检测干扰。

6. 发明授权

US08358574B2 Interference suppressing OFDM system for wireless communications 失效
公开(公告)号：US08358574B2
公开(公告)日：2013-01-22
申请号：US13102887
申请日：2011-05-06
申请人： Diakoumis Gerakoulis
发明人： Diakoumis Gerakoulis
IPC分类号： H04J11/00
CPC分类号： H04L27/265 , H04B1/109 , H04B1/71 , H04B1/7102 , H04B2201/70727 , H04B2201/7097 , H04L5/0016 , H04L27/2607 , H04L27/2627 , H04L27/2634 , H04L27/2657 , H04L27/2662
摘要： An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.

7. 发明授权

US08208514B2 Successive interference canceling for CDMA 有权
标题翻译： CDMA的连续干扰消除
公开(公告)号：US08208514B2
公开(公告)日：2012-06-26
申请号：US12572626
申请日：2009-10-02
申请人： Thomas J. Kolze , Nabil R. Yousef
发明人： Thomas J. Kolze , Nabil R. Yousef
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/71 , H04B1/7102 , H04B1/7103 , H04B1/71055 , H04B1/71072 , H04B2201/709709 , H04L1/0003 , H04L1/0009 , H04L1/0045 , H04L1/005 , H04L1/0057 , H04N21/6168
摘要： Successive interference canceling for CDMA. ICI may result from a signal's multi-path effects, or by filtering/suppression of some of the component energy of the signaling waveforms. Energy component attenuation destroys orthogonality of CDMA symbols thereby causing ICI. An ICF suppresses frequency domain portions (attenuates ingress), but also introduces ICI. Following the ICF, the signal is de-spread, sliced, re-spread and convolved with the ICF echoes (except first tap echoes). Convolving re-spread hard decisions with delayed ICF taps is equivalent to partially re-modulating the first-pass hard decisions to efficiently “add-back-in” the signal energy which was blanked/subtracted by the ICF. Alternatively, parameter estimation de-rotates and re-rotates soft symbols and hard decisions, respectively, compensating for undesirable symbol rotation. The convolved signal is subtracted from a delayed version of the ICF output signal. If desired, this process may be repeated successively to enhance the accuracy of the obtained data decisions in the next stage.
摘要翻译： CDMA的连续干扰消除。 ICI可能由信号的多路径效应，或通过滤波/抑制信号波形的一些分量能量产生。能量分量衰减破坏了CDMA符号的正交性，从而导致ICI。 ICF抑制频域部分（衰减入口），但也引入了ICI。在ICF之后，信号被解扩，切片，再扩散并与ICF回波卷积（除了第一抽头回波）。用延迟的ICF抽头卷积重新扩展硬判决相当于部分重新调制首次硬判决，以有效地“加入”ICF消隐/减去的信号能量。或者，参数估计分别旋转并重新旋转软符号和硬判决，以补偿不期望的符号旋转。从ICF输出信号的延迟版本中减去卷积信号。如果需要，可以连续地重复该过程，以提高在下一阶段获得的数据决定的准确性。

8. 发明申请

US20120134450A1 DETECTION AND MITIGATION OF TEMPORARY IMPAIRMENTS IN A COMMUNICATIONS CHANNEL 有权
标题翻译：通信通道中临时危害的检测和缓解
公开(公告)号：US20120134450A1
公开(公告)日：2012-05-31
申请号：US13306400
申请日：2011-11-29
申请人： Thomas Kolze , Bruce Currivan , Jonathan Min
发明人： Thomas Kolze , Bruce Currivan , Jonathan Min
IPC分类号： H04L27/06
CPC分类号： H04L1/005 , H04B1/71 , H04B1/7102 , H04B1/7103 , H04B1/71055 , H04B1/71072 , H04B2201/709709 , H04L1/0009 , H04L1/0045 , H04L1/0057 , H04N21/6168
摘要： Systems and methods are disclosed for detecting temporary high level impairments, such as noise or interference, for example, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. In one embodiment, the method not only performs dynamic characterization of channel fidelity against impairments, but also uses this dynamic characterization of the channel fidelity to adapt the receiver processing and to affect an improvement in the performance of the receiver. For example, in this embodiment, the method increases the accuracy of the estimation of the transmitted information, or similarly, increases the probability of making the correct estimates of the transmitted information, even in the presence of temporary severe levels of impairment. The channel fidelity history may also be stored and catalogued for use in, for example, future optimization of the transmit waveform.
摘要翻译：公开了用于检测临时高级损伤（例如噪声或干扰）的系统和方法，例如在通信信道中，并且随后减轻动态损伤的有害影响。在一个实施例中，该方法不仅执行对损伤的信道保真度的动态表征，而且还使用信道保真度的动态表征来适应接收机处理并影响接收机性能的改善。例如，在本实施例中，该方法提高了所发送信息的估计的准确性，或者类似地，即使存在临时严重的损伤水平，也增加了发送信息的正确估计的可能性。信道保真度历史也可以存储和编目，以用于例如发射波形的未来优化。

9. 发明申请

US20120127962A1 DETECTION AND MITIGATION OF TEMPORARY (BURSTS) IMPAIRMENTS IN CHANNELS USING SCDMA 审中-公开
标题翻译：使用SCDMA的频道中的临时（BURSTS）影响的检测和缓解
公开(公告)号：US20120127962A1
公开(公告)日：2012-05-24
申请号：US13360560
申请日：2012-01-27
申请人： Thomas J. Kolze
发明人： Thomas J. Kolze
IPC分类号： H04B7/216 , H04W92/00 , H03D1/04
CPC分类号： H04L1/005 , H04B1/71 , H04B1/7102 , H04B1/7103 , H04B1/71055 , H04B1/71072 , H04B2201/709709 , H04L1/0003 , H04L1/0009 , H04L1/0045 , H04L1/0057 , H04N21/6168
摘要： Systems and methods are disclosed for detecting and mitigating temporary high-level impairments, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. The system includes a transmitter and a receiver. The transmitter is adapted to transmit at least one set of modulated signals. The receiver is adapted to receive the at least one set of modulated signals and mitigate temporary high-level impairment in the at least one set of modulated signals using at least one error vector received during the temporary high-level impairment.
摘要翻译：公开了用于在通信信道中检测和减轻临时高级损伤的系统和方法，并且随后减轻动态损伤的有害影响。该系统包括发射机和接收机。发射器适于发送至少一组调制信号。接收机适于接收至少一组调制信号，并使用在临时高级别损伤期间接收到的至少一个误差向量来减轻所述至少一组调制信号中的临时高电平损害。

10. 发明授权

US08068564B2 Detection and mitigation of temporary impairments in a communications channel 失效
标题翻译：检测和缓解通信信道中的临时损伤
公开(公告)号：US08068564B2
公开(公告)日：2011-11-29
申请号：US12001316
申请日：2007-12-11
申请人： Thomas Kolze , Bruce Currivan , Jonathan Min
发明人： Thomas Kolze , Bruce Currivan , Jonathan Min
IPC分类号： H04L27/06
CPC分类号： H04L1/005 , H04B1/71 , H04B1/7102 , H04B1/7103 , H04B1/71055 , H04B1/71072 , H04B2201/709709 , H04L1/0009 , H04L1/0045 , H04L1/0057 , H04N21/6168
摘要： Systems and methods are disclosed for detecting temporary high level impairments, such as noise or interference, for example, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. In one embodiment, the method not only performs dynamic characterization of channel fidelity against impairments, but also uses this dynamic characterization of the channel fidelity to adapt the receiver processing and to affect an improvement in the performance of the receiver. For example, in this embodiment, the method increases the accuracy of the estimation of the transmitted information, or similarly, increases the probability of making the correct estimates of the transmitted information, even in the presence of temporary severe levels of impairment. The channel fidelity history may also be stored and catalogued for use in, for example, future optimization of the transmit waveform.
摘要翻译：公开了用于检测临时高级损伤（例如噪声或干扰）的系统和方法，例如在通信信道中，并且随后减轻动态损伤的有害影响。在一个实施例中，该方法不仅执行对损伤的信道保真度的动态表征，而且还使用信道保真度的动态表征来适应接收机处理并影响接收机性能的改善。例如，在本实施例中，该方法提高了所发送信息的估计的准确性，或者类似地，即使存在临时严重的损伤水平，也增加了发送信息的正确估计的可能性。信道保真度历史也可以存储和编目，以用于例如发射波形的未来优化。

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