公开(公告)号：US08411783B2

公开(公告)日：2013-04-02

申请号：US12586620

申请日：2009-09-23

申请人： Ayelet Doron ,  Rotem Avivi ,  Yuval Lomnitz

发明人： Ayelet Doron ,  Rotem Avivi ,  Yuval Lomnitz

IPC分类号： H04L1/02

CPC分类号： H04B7/0634 ,  H04B7/0417 ,  H04B7/0639 ,  H04L1/06

摘要： A method of identifying a precoding matrix corresponding to a wireless network channel comprises the steps of identifying a capacity metric that includes an identity matrix, approximating the capacity metric using an approximation metric that ignores the identity matrix, using the approximation metric to search over all matrices in a matrix codebook in order to identify a particular precoding matrix that increases a capacity of the wireless network channel, and transmitting across the wireless network channel a matrix index that corresponds to the particular precoding matrix. Additional techniques for identifying precoding matrices are also described herein, as is a method of approximating a capacity of a wireless network channel in a wireless network.

摘要翻译： 识别与无线网络信道相对应的预编码矩阵的方法包括以下步骤：使用近似度量来搜索所有矩阵来识别包括单位矩阵的容量度量，使用忽略单位矩阵的近似度量逼近容量度量 在矩阵码本中，为了识别增加无线网络信道的容量的特定预编码矩阵，以及在无线网络信道上发送对应于特定预编码矩阵的矩阵索引。 本文还描述了用于识别预编码矩阵的附加技术，以及近似无线网络中的无线网络信道的容量的方法。

公开(公告)号：US20100081448A1

公开(公告)日：2010-04-01

申请号：US12241605

申请日：2008-09-30

申请人： WENDY C. WONG ,  Nageen Himayat ,  Yuval Lomnitz ,  Timothy F. Cox

发明人： WENDY C. WONG ,  Nageen Himayat ,  Yuval Lomnitz ,  Timothy F. Cox

IPC分类号： H04W72/04

CPC分类号： H04W72/121 ,  H04W72/046

摘要： An enhanced beamforming with interference nulling method is an improvement over prior art beamforming with interference nulling techniques. The enhanced method includes two scheduling schemes that allow all base stations to schedule their cell edge users independently and determine the information exchange among base stations over the backbone that is needed to support the scheduling activity. The method uses grouping information to perform distributed scheduling among base stations to schedule downlink transmission to cell edge users, while reducing interference to cell edge users served by neighboring base stations. The enhanced method demonstrates the base station-to-base station coordination and information exchange that is needed to enable independent base station scheduling of their cell edge users.

摘要翻译： 具有干扰归零法的增强波束成形是对具有干扰零陷技术的现有技术波束成形的改进。 增强方法包括两个调度方案，其允许所有基站独立地调度其小区边缘用户，并且确定支持调度活动所需的骨干网上的基站之间的信息交换。 该方法使用分组信息在基站之间执行分布式调度，以调度对小区边缘用户的下行链路传输，同时减少对由相邻基站服务的小区边缘用户的干扰。 增强的方法演示了基站到基站的协调和信息交换，以便能够对其小区边缘用户进行独立的基站调度。

公开(公告)号：US20090270044A1

公开(公告)日：2009-10-29

申请号：US11959347

申请日：2007-12-18

申请人： Yuval Lomnitz

发明人： Yuval Lomnitz

IPC分类号： H04B17/00

CPC分类号： H04B17/345 ,  H04B17/26

摘要： Methods, systems and apparatus for estimating statistical properties of noise in modulated data carrier signals represented by modulated data symbols are disclosed. The method comprises generating an instantaneous estimate of the statistical property of noise from the received modulated data symbols on a sample by sample basis and applying a compensation function to the instantaneous estimate. The method further comprises averaging an output of the compensation function to determine the estimated statistical property of noise.

摘要翻译： 公开了用于估计由调制数据符号表示的调制数据载波信号中的噪声的统计特性的方法，系统和装置。 该方法包括从采样的基础上接收的调制数据符号产生噪声的统计特性的瞬时估计，并将补偿函数应用于瞬时估计。 该方法还包括对补偿函数的输出进行平均以确定噪声的估计的统计特性。

公开(公告)号：US07474640B2

公开(公告)日：2009-01-06

申请号：US11236520

申请日：2005-09-28

申请人： Ayelet Doron ,  Yuval Lomnitz

发明人： Ayelet Doron ,  Yuval Lomnitz

IPC分类号： H04Q7/00

CPC分类号： H04L25/067

摘要： Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.

摘要翻译： 本发明的实施例提供了一种无线通信中的干扰减轻的方法，装置和系统。 在一些说明性实施例中，该方法可以包括基于一个或多个估计的集合来确定一个或多个要被应用于由一个或多个通信子载波上的站接收的一个或多个当前符号的似然比值的一个或多个似然比值 误差值，其中所述一组误差值对应于通过所述子载波接收的多个先前码元。 在一些说明性实施例中，该方法可以包括基于当前符号包括由一个或多个其他站在子载波上发送的干扰引起的干扰的概率来确定似然比值。 描述和要求保护其他实施例。

公开(公告)号：US20070230631A1

公开(公告)日：2007-10-04

申请号：US11392931

申请日：2006-03-30

申请人： Yuval Lomnitz ,  Yang-Seok Choi

发明人： Yuval Lomnitz ,  Yang-Seok Choi

IPC分类号： H03D1/00 ,  H04L23/02

CPC分类号： H04L25/03229 ,  H04L25/03318 ,  H04L25/03968

摘要： Embodiments of the present invention provide a method, apparatus and system of decoding spatially multiplexed signals. In some demonstrative embodiments the method may include, for example, determining one or more hypothetical values of a transmitted signal of a set of transmitted signals based on one or more respective sets of hypothetical values assigned to a subset of the set of transmitted signals. Other embodiments are described and claimed;

摘要翻译： 本发明的实施例提供对空间复用信号进行解码的方法，装置和系统。 在一些演示实施例中，该方法可以包括例如基于分配给该组发送信号的子集的一个或多个相应的假设值组来确定一组发送信号的发送信号的一个或多个假设值。 描述和要求保护其他实施例;

公开(公告)号：US20130322583A1

公开(公告)日：2013-12-05

申请号：US13995705

申请日：2011-12-28

申请人： Ayelet Doron ,  Yuval Lomnitz

发明人： Ayelet Doron ,  Yuval Lomnitz

IPC分类号： H04L25/02

CPC分类号： H04L25/0202 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0256

摘要： Disclosed is an improved channel estimation by post-processing of the channel response that is generated by a Golay correlator The processing is done using time-domain operations such as gating and filtering. Gating is performed on the estimated channel response taps in order to reduce the noise level. Pre-filtering the channel response through a filter matched to the transmitted pulse-shape improves the probability of detecting the channel peaks. Post-filtering the processed channel impulse response to eliminate the high frequency effects that are added by the windowing and gating operations.

摘要翻译： 公开了通过后处理由格雷相关器产生的信道响应的改进的信道估计。该处理使用诸如门控和滤波的时域操作来完成。 对估计的信道响应抽头进行门控，以降低噪声水平。 通过与发送的脉冲形状匹配的滤波器对信道响应进行预滤波，提高了检测信道峰值的可能性。 对经处理的信道脉冲响应进行后处理，以消除由窗口和门控操作添加的高频效应。

公开(公告)号：US07979032B2

公开(公告)日：2011-07-12

申请号：US11959347

申请日：2007-12-18

申请人： Yuval Lomnitz

发明人： Yuval Lomnitz

IPC分类号： H04B17/00

CPC分类号： H04B17/345 ,  H04B17/26

摘要： Methods, systems and apparatus for estimating statistical properties of noise in modulated data carrier signals represented by modulated data symbols are disclosed. The method comprises generating an instantaneous estimate of the statistical property of noise from the received modulated data symbols on a sample by sample basis and applying a compensation function to the instantaneous estimate. The method further comprises averaging an output of the compensation function to determine the estimated statistical property of noise.

摘要翻译： 公开了用于估计由调制数据符号表示的调制数据载波信号中的噪声的统计特性的方法，系统和装置。 该方法包括从采样的基础上接收的调制数据符号产生噪声的统计特性的瞬时估计，并将补偿函数应用于瞬时估计。 该方法还包括对补偿函数的输出进行平均以确定噪声的估计的统计特性。

公开(公告)号：US20100329160A1

公开(公告)日：2010-12-30

申请号：US12459255

申请日：2009-06-26

申请人： Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

发明人： Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

IPC分类号： H04B7/00 ,  H04B7/02

CPC分类号： H04B7/0689 ,  H04B7/0628 ,  H04B7/0697

摘要： An embodiment of the present invention provides an apparatus that may include a transceiver operable to communicate with a receiver in a wireless network and adapted to select an optimal mode for transmissions, wherein the receiver estimates the optimal mode and feeds it back to the transceiver which changes a transmitted mode accordingly and wherein the optimal mode is based on a predetermined metric based on a performance equation that puts a threshold to separate between a high correlated signal to low correlation signal.

摘要翻译： 本发明的实施例提供了一种装置，其可以包括可操作以与无线网络中的接收机通信并适于选择用于传输的最佳模式的收发机，其中所述接收机估计所述最佳模式并将其馈送回所述收发器，所述收发器改变 相应地发送模式，并且其中最优模式基于基于将阈值分离在高相关信号与低相关信号之间的性能方程式的预定度量。

公开(公告)号：US07720166B2

公开(公告)日：2010-05-18

申请号：US11392931

申请日：2006-03-30

申请人： Yuval Lomnitz ,  Yang-Seok Choi

发明人： Yuval Lomnitz ,  Yang-Seok Choi

IPC分类号： H04L23/02 ,  H04L5/12

CPC分类号： H04L25/03229 ,  H04L25/03318 ,  H04L25/03968

摘要： Embodiments of the present invention provide a method, apparatus and system of decoding spatially multiplexed signals. In some demonstrative embodiments the method may include, for example, determining one or more hypothetical values of a transmitted signal of a set of transmitted signals based on one or more respective sets of hypothetical values assigned to a subset of the set of transmitted signals. Other embodiments are described and claimed.

摘要翻译： 本发明的实施例提供对空间复用信号进行解码的方法，装置和系统。 在一些演示实施例中，该方法可以包括例如基于分配给该组发送信号的子集的一个或多个相应的假设值组来确定一组发送信号的发送信号的一个或多个假设值。 描述和要求保护其他实施例。

公开(公告)号：US20080137527A1

公开(公告)日：2008-06-12

申请号：US11635886

申请日：2006-12-08

申请人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

发明人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L27/2656 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2605 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2686

摘要： A method for detectable a pre-amble location in a multiple preamble OFDM (Orthogonal Frequency Division Multiplexing) system is disclosed. An OFDM signal is generated with a plurality of frames, and each of the frames includes symbols and a predetermined preamble symbol. A maximum FDDC (Frequency Domain Differential Correlator) value is computed for each of the symbols in some of the frames. The pre-amble location in a frame is determined by summing the maximum FDDC value for each symbol at a same frame location in consecutive frames of the OFDM signal.

摘要翻译： 公开了一种在多前同步码OFDM（正交频分复用）系统中可检测前同步码头位置的方法。 利用多个帧生成OFDM信号，并且每个帧包括符号和预定的前导码符号。 对于一些帧中的每个符号计算最大FDDC（频域差分相关器）值。 通过在OFDM信号的连续帧中的相同帧位置处对每个符号的最大FDDC值求和来确定帧中的前同步码头位置。