公开(公告)号：US20090144600A1

公开(公告)日：2009-06-04

申请号：US12323544

申请日：2008-11-26

Applicant: Uri Perlmutter ,  Naftali Sommer ,  Ofir Shalvi

Inventor： Uri Perlmutter ,  Naftali Sommer ,  Ofir Shalvi

IPC: G11C29/52 ,  G06F11/10

CPC classification number: G06F11/10 ,  G06F11/1008 ,  G06F11/1068 ,  G11C2029/0411 ,  H03M13/00 ,  H03M13/3761

Abstract: A method for data storage includes storing data, which is encoded with an Error Correction Code (ECC), in a group of analog memory cells by writing respective first storage values to the memory cells in the group. After storing the data, respective second storage values are read from the memory cells in the group, and the read second storage values are processed so as to decode the ECC.Responsively to a failure in decoding the ECC, one or more of the second storage values that potentially caused the failure are identified as suspect storage values. Respective third storage values are re-read from a subset of the memory cells that includes the memory cells holding the suspect storage values. The ECC is re-decoded using the third storage values so as to reconstruct the stored data.

Abstract translation: 一种用于数据存储的方法包括通过将相应的第一存储值写入组中的存储器单元来将经错误校正码（ECC）编码的数据存储在一组模拟存储器单元中。 在存储数据之后，从组中的存储器单元读取相应的第二存储值，并且处理读取的第二存储值以便对ECC进行解码。 响应于对ECC的解码失败，可​​能导致故障的一个或多个第二存储值被识别为可疑存储值。 从包含存储可疑存储值的存储单元的存储器单元的子集重新读取相应的第三存储值。 使用第三存储值对ECC进行重新解码，以重建存储的数据。

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：US20080063094A1

公开(公告)日：2008-03-13

申请号：US11516902

申请日：2006-09-07

Applicant: Assaf Gurevitz ,  Uri Perlmutter

Inventor： Assaf Gurevitz ,  Uri Perlmutter

IPC: H04K1/10 ,  H04L27/06

CPC classification number: H04L27/2649 ,  H04L27/2656 ,  H04L27/2676

Abstract: Embodiments of methods and means for auto-correlating wireless signal samples are provided. Such embodiments include local normalization of each signal sample by a root mean square level of samples that preceded it, prior to any summation of the auto-correlation procedure. These auto-correlated signal samples are then used to distinguish downlink from uplink signals present within the signal sample set. Other embodiments include auto-correlation techniques in which no normalization is performed at any time with respect to the summation procedure. Such auto-correlated samples are then scanned to detect a preamble symbol or symbols within the signal samples. Reliable and expeditious wireless communications under WiMAX 802.16e and other protocols can be achieved in accordance with the present embodiments.

Abstract translation: 提供了用于自动相关无线信号样本的方法和装置的实施例。 这样的实施例包括在自相关过程的任何求和之前，通过其前面的样本的均方根水平来对每个信号样本进行局部归一化。 然后，这些自动相关信号样本用于将下行链路与信号样本集中存在的上行链路信号区分开来。 其他实施例包括其中相对于求和过程在任何时间不进行规范化的自相关技术。 然后扫描这样的自相关样本以检测信号样本内的前导符号或符号。 根据本实施例，可以实现在WiMAX 802.16e和其他协议下的可靠和快速的无线通信。

公开(公告)号：US20060025079A1

公开(公告)日：2006-02-02

申请号：US10911159

申请日：2004-08-02

Applicant: Ilan Sutskover ,  David Ben-Eli ,  Uri Perlmutter

Inventor： Ilan Sutskover ,  David Ben-Eli ,  Uri Perlmutter

IPC: H04Q7/20

CPC classification number: H04L5/1484 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0051 ,  H04L5/0091 ,  H04L25/0226

Abstract: Method and apparatus to perform channel estimation for a wireless communication system are described.

Abstract translation: 描述了对无线通信系统进行信道估计的方法和装置。