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91. 发明授权

US08194807B2 Method to discriminate a real echo peak from an aliased echo peak 失效
标题翻译：区分真实回波峰与别名回波峰的方法
公开(公告)号：US08194807B2
公开(公告)日：2012-06-05
申请号：US12738986
申请日：2008-10-28
申请人： Frederic Pirot
发明人： Frederic Pirot
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L25/0212 , H04L25/0224 , H04L27/2647
摘要： A method to discriminate a real echo peak from an aliased echo peak comprises: computing ‘a correlation between N samples of a digital data and a copy of the same N samples delayed by a time delay Δ1,0 to obtain a first correlation result, time delay Δ1,0 being equal to a time interval T between a first and a second distinct power peaks of an estimated channel impulse response, the first peak being the highest power peak within the temporal window, and/or computing—a correlation between the N samples and a copy of the same N samples delayed by a time delay TIFFT-Δ1,0 to obtain a second correlation result, and deciding whether the second peak is a real echo peak or an aliased echo peak based on the first and/or second correlation results.
摘要翻译：用于将真实回波峰值与混叠回波峰值区分开的方法包括：计算数字数据的N个样本与延迟了时间延迟的相同N个采样的副本之间的相关度，以获得第一相关结果，时间延迟＆Dgr; 1,0等于估计的信道脉冲响应的第一和第二不同功率峰值之间的时间间隔T，第一峰值是时间窗口内的最高功率峰值，和/或计算 N个样本之间的相关性和延迟了时间延迟TIFFT-＆Dgr; 1,0的相同N个采样的副本，以获得第二相关结果，并且基于第二个峰值是基于真实回波峰值或混叠回波峰值第一和/或第二相关结果。

92. 发明授权

US08149968B2 Estimating a signal-to-interference ratio in a receiver of a wireless communications system 有权
标题翻译：估计无线通信系统的接收机中的信号干扰比
公开(公告)号：US08149968B2
公开(公告)日：2012-04-03
申请号：US12675395
申请日：2008-08-19
申请人： Bengt Lindoff
发明人： Bengt Lindoff
IPC分类号： H03K5/01 , H03K6/04 , H04L1/00 , H03D1/04 , H03D1/06 , H04B1/10
CPC分类号： H04L25/0224 , H04J11/0093 , H04L1/0026 , H04L1/20 , H04L5/0007 , H04L5/0048 , H04L25/022 , H04L27/2601
摘要： A Signal-to-Interference Ratio of a radio channel is estimated in a receiver of a wireless communications system, wherein pilots with reference information are modulated on some sub-carriers in some symbols. At least one parameter for signals received from said first transmitter is detected, and a number (Nf, Nt) of pilots in first groups that can be coherently combined in a second group is determined, and from these a channel estimate (H) for each first group and a first covariance estimate (R) for each second group are determined. A number (M) of first covariance estimates that can be averaged is defined in dependence of the presence of signals from possible interfering transmitters, and a second covariance estimate is determined as an average of said number of first covariance estimates. From the channel estimates and the second covariance estimate a Signal-to-Interference Ratio for each second group is estimated.
摘要翻译：在无线通信系统的接收机中估计无线电信道的信号与干扰比，其中具有参考信息的导频在一些符号中的一些子载波上进行调制。检测从所述第一发射机接收到的信号的至少一个参数，并且确定可以在第二组中相干组合的第一组中的导频数（Nf，Nt），并且从这些参数中确定每个导频的信道估计（H）确定第一组和第二组的第一协方差估计（R）。根据来自可能的干扰发射机的信号的存在来定义可以被平均的第一协方差估计的数量（M），并且将第二协方差估计确定为所述第一协方差估计数的平均值。从信道估计和第二协方差估计，估计每个第二组的信号与干扰比。

93. 发明授权

US08099123B2 Adaptation of transmit subchannel gains in a system with interference cancellation 有权
标题翻译：在具有干扰消除的系统中适配发送子信道增益
公开(公告)号：US08099123B2
公开(公告)日：2012-01-17
申请号：US11192787
申请日：2005-07-29
申请人： Stefano Tomasin , Henry David Pfister , Jilei Hou , John Edward Smee
发明人： Stefano Tomasin , Henry David Pfister , Jilei Hou , John Edward Smee
IPC分类号： H04B7/00 , H04B1/00 , H04B15/00 , H04B1/04 , H04B1/10 , H04W36/00 , G08B23/00 , H04B7/185 , H04W4/00 , H04B7/216 , H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04L1/00 , H04L25/08
CPC分类号： H04W52/146 , H04B1/7103 , H04B2201/70701
摘要： A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
摘要翻译：一种用于干扰消除（IC）的方法和系统。一方面涉及交通干扰消除。另一方面涉及用于飞行员，间接费用和数据的联合IC。另一方面涉及改进的信道估计。另一方面涉及发射子信道增益的适应。

94. 发明授权

US08098777B2 Signal detection method and receiving apparatus in MIMO system 有权
标题翻译： MIMO系统中的信号检测方法和接收装置
公开(公告)号：US08098777B2
公开(公告)日：2012-01-17
申请号：US11930047
申请日：2007-10-30
申请人： Seung-Jae Bahng , Young-Jo Bang , Youn-Ok Park
发明人： Seung-Jae Bahng , Young-Jo Bang , Youn-Ok Park
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04B7/0413 , H04L1/0656 , H04L25/0204 , H04L25/0246
摘要： The present invention relates to a signal detection method and a receiving apparatus in a multiple input multiple output (MIMO) system. More particularly, the present invention relates to a signal detection device in a MIMO system using a spatial multiplexing (SM) method. In the signal detection method, a channel is estimated and layers are rearranged according to a predetermined layer arrangement rule. QR-decomposition is performed by using a rearranged system model, all constellation points in a symbol of a layer having the lowest reliability are considered, and symbols are detected by using a sequential interference elimination method.
摘要翻译：本发明涉及多输入多输出（MIMO）系统中的信号检测方法和接收装置。更具体地，本发明涉及使用空间复用（SM）方法的MIMO系统中的信号检测装置。在信号检测方法中，估计信道并根据预定层布置规则重新布置层。通过使用重排系统模型进行QR分解，考虑具有最低可靠性的层的符号中的所有星座点，并且通过使用顺序干扰消除方法来检测符号。

95. 发明授权

US08098776B2 Method and system for pre-equalization in a single weight spatial multiplexing MIMO system 有权
标题翻译：在单一加权空间复用MIMO系统中预均衡的方法和系统
公开(公告)号：US08098776B2
公开(公告)日：2012-01-17
申请号：US11173727
申请日：2005-06-30
申请人： Mark Kent , Vinko Erceg , Uri M. Landau , Pieter Van Rooyen , Pieter Roux
发明人： Mark Kent , Vinko Erceg , Uri M. Landau , Pieter Van Rooyen , Pieter Roux
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04B7/0417 , H04B7/0697 , H04L1/0656 , H04L25/0204 , H04L25/0214 , H04L25/0244 , H04L25/025 , H04L25/03019 , H04L25/03343 , H04L2025/03426 , H04L2025/03726 , H04L2025/03808
摘要： Certain aspects of the method may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of spatially multiplexed communication signals. A plurality of pre-equalization weights may be generated based on the generated plurality of vectors of baseband combined channel estimates. The received plurality of spatially multiplexed communication signals may be modified based on the generated plurality of pre-equalization weights. At least a portion of the generated plurality of pre-equalization weights may be fed back to the base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of the plurality of transmit antennas at the base station.
摘要翻译：该方法的某些方面可以包括在基站处从多个发射天线接收多个空间复用的通信信号。可以基于所接收的多个空间复用通信信号的相位旋转来生成基带组合信道估计的多个向量。可以基于所生成的多个基带组合信道估计向量来生成多个预均衡权重。可以基于所生成的多个预均衡权重来修改所接收的多个空间复用的通信信号。所生成的多个预均衡权重中的至少一部分可以反馈给基站，以便修改在基站处从多个发射天线的至少一部分发送的随后发送的空间复用的通信信号。

96. 发明授权

US08009778B2 Quantized channel state information prediction in multiple antenna systems 有权
标题翻译：多天线系统中的量化信道状态信息预测
公开(公告)号：US08009778B2
公开(公告)日：2011-08-30
申请号：US11852206
申请日：2007-09-07
申请人： Bartosz Mielczarek , Witold Krzymien
发明人： Bartosz Mielczarek , Witold Krzymien
IPC分类号： H04L1/00 , H04L25/08 , H03K6/04 , H03K5/01 , H04B1/10 , H03D1/06 , H03D1/04
CPC分类号： H04W24/10 , H03M13/47 , H03M13/612 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0641 , H04B7/0658 , H04L1/20
摘要： A CSI vector quantizer (VQ) system is provided for time-correlated channels. The VQ system operates a receiver forwarding quantized channel state information in the form of indices and a transmitter predicting channel state change. The VQ system is aimed at feedback channels, in which bit errors, erasures and delays can occur. The VQ system uses transmitter-side channel prediction algorithms that work with the quantized CSI information and allow the system to recover from feedback channel transmission errors, erasures and delays. Moreover, the techniques can be used to lower the required feedback rate, while keeping the system's throughput at the required level.
摘要翻译：为时间相关信道提供CSI矢量量化器（VQ）系统。 VQ系统操作接收机以索引的形式转发量化的信道状态信息和预测信道状态变化的发射机。 VQ系统旨在反馈信道，其中可能发生位错误，擦除和延迟。 VQ系统使用发射机侧信道预测算法与量化的CSI信息一起工作，并允许系统从反馈信道传输错误，擦除和延迟中恢复。此外，这些技术可以用于降低所需的反馈速率，同时将系统的吞吐量保持在所需的水平。

97. 发明授权

US07995687B2 Fast and reliable channel classification algorithms in bluetooth networks to detect and avoid 2.4 GHz interferers 有权
标题翻译：在蓝牙网络中快速可靠的信道分类算法来检测和避免2.4 GHz干扰信号
公开(公告)号：US07995687B2
公开(公告)日：2011-08-09
申请号：US11682052
申请日：2007-03-05
申请人： Prasanna Desai , Sven Jerlhagan , Brima Ibrahim , Siukai Mak , Asif Grushkevich , John Walley
发明人： Prasanna Desai , Sven Jerlhagan , Brima Ibrahim , Siukai Mak , Asif Grushkevich , John Walley
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04L25/08 , H04L1/00 , H04B15/00
CPC分类号： H04B1/715 , H04B2001/7154 , H04W28/04 , H04W84/18
摘要： Aspects of a method and system for fast and reliable channel classification in Bluetooth networks to detect and avoid channel interferers may include one or more processors that may enable performance of signal strength measurements on received Bluetooth signals at a current selected frequency. At least one data packet received via the Bluetooth signals may be processed to determine the presence of bit errors. The processor(s) may enable characterization of the Bluetooth signals at the current selected frequency based on the signal strength measurements and/or the processing of the data packets. The current selected frequency may be selected during adaptive frequency hopping based on the characterization.
摘要翻译：用于在蓝牙网络中快速可靠的信道分类以检测和避免信道干扰的方法和系统的方面可以包括一个或多个处理器，其可以使得能够以当前选择的频率对所接收的蓝牙信号执行信号强度测量。可以处理经由蓝牙信号接收的至少一个数据分组以确定位错误的存在。处理器可以基于信号强度测量和/或数据分组的处理来启用当前所选频率的蓝牙信号的表征。可以在基于表征的自适应跳频期间选择当前选择的频率。

98. 发明授权

US07933372B2 Successive interference cancellation based on the number of retransmissions 有权
标题翻译：基于重发次数的连续干扰消除
公开(公告)号：US07933372B2
公开(公告)日：2011-04-26
申请号：US11683630
申请日：2007-03-08
申请人： Oghenekome F. Oteri , Leo G. Dehner , Jayesh H. Kotecha , Raja V. Tamma
发明人： Oghenekome F. Oteri , Leo G. Dehner , Jayesh H. Kotecha , Raja V. Tamma
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04B15/00
CPC分类号： H04L25/0328 , H04L2025/03426
摘要： A method for processing a plurality of symbol streams is provided. The method includes receiving a first symbol stream, wherein the first symbol stream has a corresponding first number of retransmissions. The method further includes receiving a second symbol stream, wherein the second symbol stream has a corresponding second number of retransmissions. The method further includes selecting the first symbol stream for decoding, if the first number of retransmissions is greater than the second number of retransmissions.
摘要翻译：提供了一种用于处理多个符号流的方法。该方法包括接收第一符号流，其中第一符号流具有对应的第一数目的重传。该方法还包括接收第二符号流，其中第二符号流具有对应的第二数量的重传。该方法还包括：如果第一次重发次数大于第二次重发次数，则选择用于解码的第一符号流。

99. 发明授权

US07830994B2 Channel estimation system and method 有权
标题翻译：信道估计系统和方法
公开(公告)号：US07830994B2
公开(公告)日：2010-11-09
申请号：US11789180
申请日：2007-04-24
申请人： Haim Primo , Yosef Stein , Wei An
发明人： Haim Primo , Yosef Stein , Wei An
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L25/03038 , H04B17/345 , H04B17/364 , H04L25/0218 , H04L25/0228 , H04L25/025 , H04L25/03159 , H04L27/2647 , H04L2025/03414 , H04L2025/03783
摘要： Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; storing the average channel impulse responses for the identified channel path delays; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol stream and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data; and subtracting the reconstructed inter-channel interference noise from the OFDM symbol stream to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.
摘要翻译：通过从包括载波数据，信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 存储所识别的信道路径延迟的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应，为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号流的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下，估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率，所识别的信道路径延迟集合和估计的载波数据来重构信道间干扰噪声; 并且从OFDM符号流中减去重建的信道间干扰噪声，以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

100. 发明授权

US07796716B2 Eliminating narrowband interference in a receiver 有权
标题翻译：消除接收机中的窄带干扰
公开(公告)号：US07796716B2
公开(公告)日：2010-09-14
申请号：US11828349
申请日：2007-07-26
申请人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
发明人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
IPC分类号： H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L27/2647 , H04B1/71 , H04L25/03006
摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.
摘要翻译：无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。此外，输入信号可以包含窄带干扰信号。无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。无线设备然后从输入信号中去除检测到的干扰带。残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。

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