公开(公告)号：US07606139B2

公开(公告)日：2009-10-20

申请号：US11635886

申请日：2006-12-08

Applicant: Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

Inventor： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC: H04J11/00

CPC classification number: H04L27/2656 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2605 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2686

Abstract: 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.

Abstract translation: 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

Applicant: Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

Inventor： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC: H04W4/00

CPC classification number: H04L25/022 ,  H04L25/0228 ,  H04W36/30

Abstract: 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.

Abstract translation: 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

Applicant: Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

Inventor： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

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

CPC classification number: H04L25/022 ,  H04L25/0228 ,  H04W36/30

Abstract: 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.

Abstract translation: 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

Applicant: Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

Inventor： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC: H04J11/00 ,  H04L27/28

CPC classification number: H04L27/2656 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2605 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2686

Abstract: 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.

Abstract translation: 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

Applicant: Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

Inventor： Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

IPC: H04W4/00

CPC classification number: H04B7/0689 ,  H04B7/0628 ,  H04B7/0697

Abstract: 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.

Abstract translation: 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

Applicant: Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

Inventor： Rotem Avivi ,  Yuval Lomnitz ,  Uri Perlmutter

IPC: H04B7/00 ,  H04B7/02

CPC classification number: H04B7/0689 ,  H04B7/0628 ,  H04B7/0697

Abstract: 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.

Abstract translation: 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：US07826544B2

公开(公告)日：2010-11-02

申请号：US11824600

申请日：2007-06-29

Applicant: Eyal Bick ,  Uri Perlmutter

Inventor： Eyal Bick ,  Uri Perlmutter

IPC: H04K1/10

CPC classification number: H04L27/2662 ,  H04L27/266 ,  H04L27/2678

Abstract: In general, in one aspect, the disclosure describes a method defining order and means in which physical parameters of a received OFDM signal may be detected. A fractional frequency offset is determined for the OFDM signal and is used to determine a coarse location for received signal preamble. A symbol boundary is determined based on the coarse location and the course location is used to determine preamble location. A preamble sequence and integer frequency offset is determined based on the preamble location.

Abstract translation: 通常，在一个方面，本公开描述了定义可以检测接收的OFDM信号的物理参数的顺序和装置的方法。 确定OFDM信号的分数频偏，并用于确定接收信号前同步码的粗略位置。 基于粗略位置确定符号边界，并且使用路线位置来确定前导码位置。 基于前导码位置确定前导码序列和整数频率偏移。

公开(公告)号：US20090003471A1

公开(公告)日：2009-01-01

申请号：US11824600

申请日：2007-06-29

Applicant: Eyal Bick ,  Uri Perlmutter

Inventor： Eyal Bick ,  Uri Perlmutter

IPC: H04L27/28

CPC classification number: H04L27/2662 ,  H04L27/266 ,  H04L27/2678

Abstract: In general, in one aspect, the disclosure describes a method defining order and means in which physical parameters of a received OFDM signal may be detected. A fractional frequency offset is determined for the OFDM signal and is used to determine a coarse location for received signal preamble. A symbol boundary is determined based on the coarse location and the course location is used to determine preamble location. A preamble sequence and integer frequency offset is determined based on the preamble location.

Abstract translation: 通常，在一个方面，本公开描述了定义可以检测接收的OFDM信号的物理参数的顺序和装置的方法。 确定OFDM信号的分数频偏，并用于确定接收信号前同步码的粗略位置。 基于粗略位置确定符号边界，并且使用路线位置来确定前导码位置。 基于前导码位置确定前导码序列和整数频率偏移。

公开(公告)号：US20170170885A1

公开(公告)日：2017-06-15

申请号：US15283383

申请日：2016-10-01

Applicant: Qinghua Li ,  Xiaogang Chen ,  Xintian Lin ,  Yuan Zhu ,  Assaf Gurevitz ,  Uri Perlmutter

Inventor： Qinghua Li ,  Xiaogang Chen ,  Xintian Lin ,  Yuan Zhu ,  Assaf Gurevitz ,  Uri Perlmutter

IPC: H04B7/04 ,  H04W72/04 ,  H04W28/02

CPC classification number: H04B7/0617 ,  H04B7/0413 ,  H04W28/0236

Abstract: This disclosure describes methods, apparatus, and systems related to applying channel smoothing to beamformed vectors in wireless communications between a transmitter device and a receiver device. In a first aspect, a device is disclosed that identifies disruptions between at least two first beamforming vectors on adjacent frequencies in a communication channel between the device and a first device of a plurality of user devices. The device determines one or more second beamforming vectors proximate to the identified disruption. The device utilizes the one or more second beamforming vectors to smooth the communication channel between the device and the first device of the plurality of user devices.

公开(公告)号：US09229861B2

公开(公告)日：2016-01-05

申请号：US13526859

申请日：2012-06-19

Applicant: Uri Perlmutter ,  Oren Golov

Inventor： Uri Perlmutter ,  Oren Golov

IPC: H04L1/00 ,  G06F12/08 ,  G06F11/10

CPC classification number: G06F3/0638 ,  G06F3/0604 ,  G06F3/0679 ,  G06F11/1008 ,  G06F12/08

Abstract: A method for data storage includes storing data in a group of analog memory cells by writing respective input storage values to the memory cells in the group. After storing the data, respective output storage values are read from the analog memory cells in the group. Respective confidence levels of the output storage values are estimated, and the confidence levels are compressed. The output storage values and the compressed confidence levels are transferred from the memory cells over an interface to a memory controller.

Abstract translation: 一种用于数据存储的方法包括通过将相应的输入存储值写入组中的存储器单元来将数据存储在一组模拟存储器单元中。 在存储数据之后，从组中的模拟存储器单元读取相应的输出存储值。 估计输出存储值的相对置信水平，并且压缩置信水平。 输出存储值和压缩置信水平通过接口从存储器单元传送到存储器控制器。