公开(公告)号：US08675720B2

公开(公告)日：2014-03-18

申请号：US13174327

申请日：2011-06-30

申请人： Ayelet Doron ,  Vladimir Kravtsov ,  Yuval Lomnitz

发明人： Ayelet Doron ,  Vladimir Kravtsov ,  Yuval Lomnitz

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC分类号： H04B17/345 ,  H04L25/0242 ,  H04L25/0248

摘要： A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.

摘要翻译： 用于正交频分复用（OFDM）系统的噪声估计滤波器可以包括滤波器组模块，系数平方模块和求和模块。 滤波器组模块可以通过OFDM信号向量乘以单一矢量，以产生OFDM信号矢量的标量积。 系数平方模块可以对标量积进行平方并加权标量积以产生多个加权单个估计。 系数平方模块可以包括用于平方标量积以产生多个单个估计的平方模块和用于对形成多个加权单个估计值的噪声系数对每个单个估计进行加权的系数乘法模块。 求和模块可以对加权的单个估计进行求和以产生噪声和干扰功率估计。

公开(公告)号：US20130343444A1

公开(公告)日：2013-12-26

申请号：US13528952

申请日：2012-06-21

申请人： Maxim Greenberg ,  Tom Harel ,  Yuval Lomnitz

发明人： Maxim Greenberg ,  Tom Harel ,  Yuval Lomnitz

IPC分类号： H04L27/22 ,  H04B17/00

CPC分类号： H04B17/12 ,  H01Q3/26 ,  H04B7/0617 ,  H04B7/084

摘要： Some demonstrative embodiments include devices, systems and/or methods of phase quantization. For example, a device may include a phase quantizer to receive a plurality of non-quantized phase values corresponding to a plurality of antenna elements of a phased-array antenna, based on the plurality of non-quantized phase values to select a predefined rotation angle, to determine a plurality of rotated non-quantized phase values by rotating the plurality of non-quantized phase values by the selected rotation angle, and to generate a plurality of quantized phase values by quantizing the plurality of rotated non-quantized phase values.

摘要翻译： 一些演示实施例包括相位量化的装置，系统和/或方法。 例如，设备可以包括相位量化器，用于基于多个非量化相位值来接收对应于相控阵天线的多个天线元件的多个非量化相位值，以选择预定义的旋转角度 通过将所述多个非量化相位值旋转所选择的旋转角度来确定多个旋转的非量化相位值，并且通过量化所述多个旋转非量化相位值来生成多个量化相位值。

公开(公告)号：US08279813B2

公开(公告)日：2012-10-02

申请号：US12237554

申请日：2008-09-25

申请人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

发明人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

IPC分类号： H04W4/00 ,  H04B7/216 ,  H04W72/00

CPC分类号： H04L5/0007 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/005

摘要： A method and apparatus to transmit pilot subcarriers over uplink channels. The pilot subcarriers includes symbols which hierarchically structured. The symbol includes a first split of at least two fractional frequency reuse (FFR) groups, a second split of a fractional frequency reuse (FFR) group to a distributed resource group and localized resource group and a third split of said distributed resource group and localized resource group into plurality of subchannels.

摘要翻译： 一种通过上行链路信道发送导频子载波的方法和装置。 导频子载波包括分层结构的符号。 该符号包括至少两个分数频率重用（FFR）组的第一分裂，分数频率重用（FFR）组的第二分裂到分布式资源组和本地化资源组以及所述分布式资源组的第三分组和本地化 资源组成多个子信道。

公开(公告)号：US07974178B2

公开(公告)日：2011-07-05

申请号：US12415938

申请日：2009-03-31

申请人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

发明人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

IPC分类号： H04J11/00 ,  H04J1/00

CPC分类号： H04L5/0048 ,  H04L5/005 ,  H04L5/0051

摘要： A novel pilot method employs a cluster having a particular arrangement of pilot sub-carriers to optimize transmissions under 802.16 m, or WiMAX-II. The optimally configured cluster features equal pilot density per OFDM symbol, two or more pilot sub-carriers per cluster, and interlaced pilot sub-carriers, which enables the base stations to successfully boost the pilot sub-carriers, for optimum performance.

摘要翻译： 新颖的导频方法采用具有导频子载波的特定布置的簇来优化在802.16m或WiMAX-II下的传输。 最优配置的集群具有每OFDM符号相同的导频密度，每个簇的两个或更多个导频子载波和隔行导频子载波，这使得基站能够成功地升级导频子载波以获得最佳性能。

公开(公告)号：US07843872B2

公开(公告)日：2010-11-30

申请号：US11796956

申请日：2007-04-30

申请人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

发明人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC分类号： H04W4/00

CPC分类号： H04L25/022 ,  H04L25/0228 ,  H04W36/30

摘要： Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.

摘要翻译： 描述无线通信的方法和布置。 实施例包括转换，代码，状态机或用于从发射机接收表示已知符号序列的信号的其他逻辑。 信号可以在多个子信道上发送。 实施例还可以包括确定子信道处的信道响应并确定已知序列的接收。 确定可以包括以差分方式处理子信道处的信道响应以消除信道相位响应并获得信道幅度。 在一些实施例中，可以通过将表示子信道的接收的频域值乘以相邻子信道的频域值的复共轭来执行抵消。 许多实施例还可以包括计算信号的载波与干扰和噪声比（CINR）。 在几个实施例中，信号可以表示无线帧的前同步码。

公开(公告)号：US20100246696A1

公开(公告)日：2010-09-30

申请号：US12415938

申请日：2009-03-31

申请人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

发明人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae Fwu

IPC分类号： H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/005 ,  H04L5/0051

摘要： A novel pilot method employs a cluster having a particular arrangement of pilot sub-carriers to optimize transmissions under 802.16m, or WiMAX-II. The optimally configured cluster features equal pilot density per OFDM symbol, two or more pilot sub-carriers per cluster, and interlaced pilot sub-carriers, which enables the base stations to successfully boost the pilot sub-carriers, for optimum performance.

摘要翻译： 新颖的导频方法采用具有导频子载波的特定布置的集群来优化在802.16m或WiMAX-II下的传输。 最优配置的集群具有每OFDM符号相同的导频密度，每个簇的两个或更多个导频子载波和隔行导频子载波，这使得基站能够成功地升级导频子载波以获得最佳性能。

公开(公告)号：US20100246538A1

公开(公告)日：2010-09-30

申请号：US12415957

申请日：2009-03-31

申请人： Vladimir Kravtsov ,  Yuval Lomnitz ,  Clark Chen ,  Shilpa Talwar ,  Nageen Himayat ,  Li Li ,  Hua Yang ,  Homgmei Sun

发明人： Vladimir Kravtsov ,  Yuval Lomnitz ,  Clark Chen ,  Shilpa Talwar ,  Nageen Himayat ,  Li Li ,  Hua Yang ,  Homgmei Sun

IPC分类号： H04J3/00

CPC分类号： H04W72/06 ,  H04W28/08 ,  H04W72/082

摘要： A method for managing and allocating radio resources (RRMA method) of multiple radio resource types to subscriber stations is disclosed. The RRMA method includes bandwidth partitioning, into parts comprising “slots” with a given reuse pattern, a selection rule, to select a “cell, reuse pattern” pair serving each user, and an allocation rule, for distributing to each user an appropriate number of bandwidth slots from the selected “cell, reuse pattern” pair. After an adaptation period, the method reaches a desired fairness, while simultaneously reaching a maximal mean throughput, possible under this fairness. For big networks, the method provides basically decentralized radio resource management. The RRMA method is useful to cellular networks having a single set of orthogonal sub-channels (frequency/time slots) being reused by all network cells, such as time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), or OFDMA/TDMA cellular systems. Particularly, the method is applicable in fractional frequency reuse cellular networks.

摘要翻译： 公开了一种用于向用户站管理和分配多种无线电资源类型的无线电资源（RRMA方法）的方法。 RRMA方法包括带宽划分，包括具有给定重复使用模式的“时隙”的部分，选择规则，以选择为每个用户提供服务的“小区，重用模式”对以及分配规则，用于向每个用户分配适当的号码 来自所选择的“小区，重用模式”对的带宽时隙。 在适应期后，该方法达到期望的公平性，同时达到最大平均吞吐量，这在公平性下是可能的。 对于大型网络，该方法基本上提供了分散的无线资源管理。 RRMA方法对于具有由所有网络小区重新使用的单组正交子信道（频率/时隙）的蜂窝网络是有用的，诸如时分多址（TDMA），正交频分多址（OFDMA）或 OFDMA / TDMA蜂窝系统。 特别地，该方法适用于分数频率复用蜂窝网络。

公开(公告)号：US20100074347A1

公开(公告)日：2010-03-25

申请号：US12237554

申请日：2008-09-25

申请人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae JK Fwu

发明人： Yuval Lomnitz ,  Huaning Niu ,  Jong-Kae JK Fwu

IPC分类号： H04L27/28

CPC分类号： H04L5/0007 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/005

摘要： A method and apparatus to transmit pilot subcarriers over uplink channels. The pilot subcarriers includes symbols which hierarchically structured. The symbol includes a first split of at least two fractional frequency reuse (FFR) groups, a second split of a fractional frequency reuse (FFR) group to a distributed resource group and localized resource group and a third split of said distributed resource group and localized resource group into plurality of subchannels.

摘要翻译： 一种通过上行链路信道发送导频子载波的方法和装置。 导频子载波包括分层结构的符号。 该符号包括至少两个分数频率重用（FFR）组的第一分裂，分数频率重用（FFR）组的第二分裂到分布式资源组和本地化资源组以及所述分布式资源组的第三分组和本地化 资源组成多个子信道。

公开(公告)号：US20080267059A1

公开(公告)日：2008-10-30

申请号：US11796956

申请日：2007-04-30

申请人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

发明人： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC分类号： H04J11/00 ,  H03D1/00 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04L25/022 ,  H04L25/0228 ,  H04W36/30

摘要： Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.

摘要翻译： 描述无线通信的方法和布置。 实施例包括转换，代码，状态机或用于从发射机接收表示已知符号序列的信号的其他逻辑。 信号可以在多个子信道上发送。 实施例还可以包括确定子信道处的信道响应并确定已知序列的接收。 确定可以包括以差分方式处理子信道处的信道响应以消除信道相位响应并获得信道幅度。 在一些实施例中，可以通过将表示子信道的接收的频域值乘以相邻子信道的频域值的复共轭来执行抵消。 许多实施例还可以包括计算信号的载波与干扰和噪声比（CINR）。 在几个实施例中，信号可以表示无线帧的前同步码。

公开(公告)号：US20070070932A1

公开(公告)日：2007-03-29

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它站在子载波上发送而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。