公开(公告)号：US07606139B2

公开(公告)日：2009-10-20

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

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

摘要： A method for detecting a preamble 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 preamble 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： 公开了一种用于检测多前同步码OFDM（正交频分复用）系统中的前导码位置的方法。 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导码位置。

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：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：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。

公开(公告)号：US08218492B2

公开(公告)日：2012-07-10

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： H04W4/00

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：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：US08848772B2

公开(公告)日：2014-09-30

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：US20130003802A1

公开(公告)日：2013-01-03

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： H04L27/28 ,  H04B17/00

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：US08068459B2

公开(公告)日：2011-11-29

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： H04L5/22 ,  H04J3/00 ,  H04W72/00

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：US07986613B2

公开(公告)日：2011-07-26

申请号：US12344498

申请日：2008-12-27

申请人： Yuval Lomnitz

发明人： Yuval Lomnitz

IPC分类号： H04J11/00

CPC分类号： H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/03343

摘要： Two novel subchannelization methods are disclosed, for use in a 802.16m system. A downlink subchannelization method supports both localized and distributed sub-carriers, different modulation modes, and supports a variety of different fractional frequency reuse (FFR) group allocations.

摘要翻译： 公开了两种新颖的子信道化方法，用于802.16m系统。 下行链路子信道化方法支持本地化和分散的子载波，不同的调制模式，并且支持各种不同的分数频率重用（FFR）组分配。