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31. 发明授权

US08238492B2 Method and apparatus for packet detection via cross-correlation in the presence of frequency offset 有权
标题翻译：在存在频偏的情况下通过互相关的分组检测的方法和装置
公开(公告)号：US08238492B2
公开(公告)日：2012-08-07
申请号：US12784494
申请日：2010-05-20
申请人： Yehuda Azenkot , Zvi Bernstein
发明人： Yehuda Azenkot , Zvi Bernstein
IPC分类号： H04L27/06
CPC分类号： H04L27/0014 , H04L2027/0026
摘要： An apparatus and method for packet detection using cross-correlation in the presence of frequency offset. The method comprises: segmenting a received signal; and cross-correlating each segment with an expected signal. The apparatus comprises a slicer that segments a received signal; and a cross correlator that cross-correlates each segment with an expected signal.
摘要翻译：一种在存在频偏的情况下使用互相关的分组检测的装置和方法。该方法包括：对接收到的信号进行分段; 并将每个段与期望的信号互相关。该装置包括分段接收信号的限幅器; 以及将每个段与预期信号互相关的互相关器。

32. 发明授权

US07894503B2 System and method of flexible channel allocation in an ultra wideband (UWB) frequency hopping communication system 有权
标题翻译：超宽带（UWB）跳频通信系统中灵活信道分配的系统和方法
公开(公告)号：US07894503B2
公开(公告)日：2011-02-22
申请号：US11731932
申请日：2007-04-02
申请人： Yehuda Azenkot , Manoneet Singh , William L. Abbott , Gregory Lerner
发明人： Yehuda Azenkot , Manoneet Singh , William L. Abbott , Gregory Lerner
IPC分类号： H04B1/00
CPC分类号： H04B1/71632 , H04B1/7143 , H04B1/719 , H04W72/04 , Y02D70/142 , Y02D70/146 , Y02D70/40
摘要： A system and method of flexible channel allocation in an ultra wideband frequency hopping communication system is disclosed. In one embodiment, a method includes communicating radio signals through rapidly switching among a band group 6 according to a hopping pattern. The method also includes scanning the ultra wideband spectra to determine the band group 6 based on the hopping pattern of the radio signals.In another embodiment, a method includes scanning ultra wideband spectra to eliminate any frequency band of the ultra wideband spectra from a list of available frequency bands when the any frequency band is currently used, selecting a band group in combination of two or more frequency bands to communicate radio signals with an optimal transmission power and/or maximum range, and communicating the radio signals through rapidly switching among the band group.
摘要翻译：公开了一种在超宽带跳频通信系统中灵活的信道分配的系统和方法。在一个实施例中，一种方法包括通过根据跳频图案在频带组6之间快速切换来传送无线电信号。该方法还包括扫描超宽带频谱以基于无线电信号的跳频模式来确定频带组6。在另一个实施例中，一种方法包括扫描超宽带频谱以从当前使用的任何频带的可用频带的列表中消除超宽带频谱的任何频带，选择两个或多个频带组合的频带组以最佳发射功率和/或最大范围传送无线电信号，并通过频带组之间的快速切换来传送无线电信号。

33. 发明授权

US07826572B2 Dynamic optimization of overlap-and-add length 有权
标题翻译：重叠和加长度的动态优化
公开(公告)号：US07826572B2
公开(公告)日：2010-11-02
申请号：US11818099
申请日：2007-06-13
申请人： William L. Abbott , Yehuda Azenkot
发明人： William L. Abbott , Yehuda Azenkot
IPC分类号： H03D1/06 , H03D11/04 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04K1/10 , H04L27/28 , H04J11/00
CPC分类号： H04L27/2605 , H04L25/0204 , H04L25/0216 , H04L27/2647 , H04L27/2662
摘要： A method of adjusting overlap-and-add length for zero-padded suffixes. The method includes, based on a channel impulse response, estimating an effective channel length. When the effective channel length is less than a default overlap-and-add length and greater than a minimum length, the method includes setting the overlap-and-add length to the effective channel length. When the effective channel length is less than the minimum length, the method includes setting the overlap-and-add length to the minimum length. When the effective channel length is greater than the default overlap-and-add length, the method includes setting the overlap-and-add length to the default overlap-and-add length.
摘要翻译：调整零填充后缀的重叠和加长度的方法。该方法包括基于信道脉冲响应来估计有效信道长度。当有效信道长度小于默认的重叠和加长度并且大于最小长度时，该方法包括将重叠和添加长度设置为有效信道长度。当有效通道长度小于最小长度时，该方法包括将重叠和加长度设置为最小长度。当有效通道长度大于默认重叠长度时，该方法包括将重叠和添加长度设置为默认的重叠和添加长度。

34. 发明申请

US20060088090A1 DFE to FFE equalization coefficient conversion process for DOCSIS 2.0 失效
标题翻译： DOCSIS 2.0的DFE到FFE均衡系数转换过程
公开(公告)号：US20060088090A1
公开(公告)日：2006-04-27
申请号：US10975177
申请日：2004-10-27
申请人： Yehuda Azenkot , Selim Rakib , Nathalie Tal
发明人： Yehuda Azenkot , Selim Rakib , Nathalie Tal
IPC分类号： H03H7/40
CPC分类号： H04L25/03057 , H04L2025/0342 , H04L2025/0349 , H04L2025/03808
摘要： A method and appartus for converting FFE and FBE coefficients from a DOCSIS compatible cable modem termination system upstream equalizer into FFE only coefficients to be sent down to the cable modem which transmitted the training burst which resulted in convergence on the FFE and FFE coefficients. The method involves programming an FBE like conversion structure comprised of an FFE filter and an FBE filter whose outputs are summed with the FFE and FFE coefficients from the CMTS equalizer. The FFE coefficients are stored in the FFE filter of the conversion structure. The FBE coefficients are stored in an FBE filter of the conversion structure. Then, an input vector which simulates the Dirac function (an impulse) is input to the conversion structure to derive coefficients at its output which define the impulse response and transfer function of the conversion structure. These coefficients are the FFE only coefficients which may be used to select a subset of 24 for sending to the cable modem.
摘要翻译：一种用于将来自DOCSIS兼容电缆调制解调器终端系统上游均衡器的FFE和FBE系数转换成仅FFE的系数的方法和系统，其被发送到发送训练脉冲串的电缆调制解调器，其导致FFE和FFE系数的收敛。该方法包括对由FFE滤波器和FBE滤波器组成的FBE转换结构进行编程，该滤波器的输出与来自CMTS均衡器的FFE和FFE系数相加。 FFE系数存储在转换结构的FFE滤波器中。 FBE系数存储在转换结构的FBE滤波器中。然后，将模拟Dirac函数（脉冲）的输入向量输入到转换结构，以在其输出处导出定义转换结构的脉冲响应和传递函数的系数。这些系数是仅用于FFE的系数，其可以用于选择用于发送到电缆调制解调器的24的子集。

35. 发明授权

US08155600B2 Digital communication using an inexpensive reference crystal 有权
标题翻译：使用廉价参考晶体的数字通信
公开(公告)号：US08155600B2
公开(公告)日：2012-04-10
申请号：US11949394
申请日：2007-12-03
申请人： Yehuda Azenkot , Manoneet Singh
发明人： Yehuda Azenkot , Manoneet Singh
IPC分类号： H04B1/40
CPC分类号： H04L27/0014 , H03J7/04 , H04L2027/0016 , H04L2027/0018 , H04L2027/0024 , H04L2027/0034
摘要： Systems and methods for digital communication using an inexpensive reference crystal are described herein. Some illustrative embodiments include a method that includes setting a center frequency of a local oscillator used by a radio frequency (RF) transceiver, sequentially applying each of a plurality of predetermined offsets to the center frequency of the local oscillator, determining a plurality of metrics indicative of the quality of a received signal (each of the plurality of metrics corresponding to a different predetermined offset of the plurality of predetermined offsets), and selecting a predetermined offset of the plurality of predetermined offsets that results in a metric indicating a received signal that is higher in quality than the received signal that results when applying each of the remaining predetermined offsets of the plurality of offsets.
摘要翻译：本文描述了使用便宜的参考晶体进行数字通信的系统和方法。一些说明性实施例包括一种方法，其包括设置由射频（RF）收发器使用的本地振荡器的中心频率，将多个预定偏移中的每一个顺序地应用于本地振荡器的中心频率，确定多个指标接收信号的质量（多个度量中的每一个对应于多个预定偏移的不同的预定偏移量），并且选择导致指示接收信号的度量的多个预定偏移量的预定偏移量质量高于在应用多个偏移量的剩余预定偏移量时产生的接收信号。

36. 发明申请

US20080310565A1 Dynamic optimization of overlap-and-add length 有权
标题翻译：重叠和加长度的动态优化
公开(公告)号：US20080310565A1
公开(公告)日：2008-12-18
申请号：US11818099
申请日：2007-06-13
申请人： William L. Abbott , Yehuda Azenkot
发明人： William L. Abbott , Yehuda Azenkot
IPC分类号： H04B1/10
CPC分类号： H04L27/2605 , H04L25/0204 , H04L25/0216 , H04L27/2647 , H04L27/2662
摘要： A method of adjusting overlap-and-add length for zero-padded suffixes. The method includes, based on a channel impulse response, estimating an effective channel length. When the effective channel length is less than a default overlap-and-add length and greater than a minimum length, the method includes setting the overlap-and-add length to the effective channel length. When the effective channel length is less than the minimum length, the method includes setting the overlap-and-add length to the minimum length. When the effective channel length is greater than the default overlap-and-add length, the method includes setting the overlap-and-add length to the default overlap-and-add length.
摘要翻译：调整零填充后缀的重叠和加长度的方法。该方法包括基于信道脉冲响应来估计有效信道长度。当有效信道长度小于默认的重叠和加长度并且大于最小长度时，该方法包括将重叠和添加长度设置为有效信道长度。当有效通道长度小于最小长度时，该方法包括将重叠和加长度设置为最小长度。当有效通道长度大于默认重叠长度时，该方法包括将重叠和添加长度设置为默认的重叠和添加长度。

37. 发明申请

US20060123452A1 Method and apparatus to improve SCDMA headroom 有权
公开(公告)号：US20060123452A1
公开(公告)日：2006-06-08
申请号：US11326225
申请日：2006-01-04
申请人： Yehuda Azenkot , Selim Rakib
发明人： Yehuda Azenkot , Selim Rakib
IPC分类号： H04N7/173
CPC分类号： H04N7/17309 , H04J13/16 , H04L5/0016 , H04L5/0048 , H04L25/0226
摘要： A method of determining when cable modems in a distributed digital data delivery service over cable TV hybrid fiber coaxial cable network have a headroom problem and resolving said problem. The method involves measuring the burst power from each cable modem, and if the burst power is too low, requesting the cable modem whose burst power is too low to increase its transmit power, and keeping track of which modems have been requested to increase their power. If a predetermined number of requests to increase power have not resulted in the cable modem transmitting with sufficient power for reliable reception, the cable modem is listed as having a headroom problem. Subsequent requests for upstream bandwidth from all modems with headroom problems are analyzed to determine if the requested burst size is too large and will result in a headroom problem. If so, a calculation as to the maximum number of spreading codes that each modem with a headroom problem can simultaneously transmit on without a headroom problem. The requested burst is then broken down into smaller burst fragments, and appropriate upstream minislot assignments adequate to transmit the burst fragments are made and sent to the cable modem.

38. 发明申请

US20050122996A1 Establishment of multiple upstream docsis logical channels based upon performance 有权
标题翻译：基于性能建立多个上游文档逻辑信道
公开(公告)号：US20050122996A1
公开(公告)日：2005-06-09
申请号：US10729179
申请日：2003-12-06
申请人： Yehuda Azenkot , Selim Rakib
发明人： Yehuda Azenkot , Selim Rakib
IPC分类号： H04J3/14 , H04L12/24 , H04L12/28
CPC分类号： H04L12/2801 , H04L41/0816 , H04L41/083 , H04L41/0893 , H04L41/0896
摘要： A process for grouping cable modems by type/modulation profile and/or throughput ability into different logical groups. Each logical group is commanded to transmit on an upstream which has a burst profile set to effectively use the throughput ability of the cable modem. Some species monitor initial ranging bursts and separate CMs with inadequate power onto a lower throughput upstream. Some species monitor post registration data transmissions for various factors and subdivide groups into subgroups of overperformers and underperformers.
摘要翻译：通过类型/调制简档和/或吞吐能力将电缆调制解调器分组到不同逻辑组的过程。每个逻辑组被命令在具有突发配置文件集的上游上进行传输，以有效地利用电缆调制解调器的吞吐能力。一些物种监测初始测距突发，并将具有不足功率的CM分离到较低吞吐量上游。一些物种监测各种因素的后注册数据传输，并将分组划分为超跑者和表现不佳的亚组。

39. 发明授权

US08593992B2 System and method for throughput enhancement 有权
公开(公告)号：US08593992B2
公开(公告)日：2013-11-26
申请号：US13152279
申请日：2011-06-03
申请人： Yehuda Azenkot , Zvi Bernstein
发明人： Yehuda Azenkot , Zvi Bernstein
IPC分类号： H04L12/28
CPC分类号： H04L27/0012 , H04B3/02 , H04L43/08 , H04L43/0847 , H04L43/0888 , H04L47/28
摘要： A method in a first node of a network comprises computing a packet duration when using a first unicast profile with a first type preamble and a packet duration when using a second unicast profile with a second type preamble; comparing the computed packet durations so as to determine one from the first and second unicast profiles which yields a shorter duration; and sending the packet to a second node by using the determined unicast profile.

40. 发明申请

US20110293032A1 METHOD AND APPARATUS FOR MITIGATING THE RESIDUAL CFO EFFECT ON CHANNEL ESTIMATION FOR OFDM RECEIVERS 失效
标题翻译：减少用于OFDM接收机的信道估计的残余CFO效应的方法和装置
公开(公告)号：US20110293032A1
公开(公告)日：2011-12-01
申请号：US12909816
申请日：2010-10-21
申请人： Yehuda Azenkot , Zvi Bernstein
发明人： Yehuda Azenkot , Zvi Bernstein
IPC分类号： H04B15/00 , H03L7/08
CPC分类号： H03L7/0807 , H03L2207/50 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/024 , H04L25/03159 , H04L27/2613 , H04L27/266 , H04L27/2675 , H04L27/2695 , H04L2025/03414
摘要： A CFO tracking loop module comprises: a numerically-controlled oscillator (NCO) that calculates a phase output; a CFO phase error block that generates a corrected NCO phase output by subtracting half of residual CFO phase error from the NCO phase output; a multiplier that corrects pilot subcarrier's phase by multiplying complex values of the pilot subcarriers by a conjugated complex value of the corrected NCO phase output; a pilot processor that generates a phase error by averaging phases over pilot subcarriers; and a loop filter that filters phase error from the pilot processor and updates the NCO with the filtered phase error.
摘要翻译： CFO跟踪环模块包括：计算相位输出的数控振荡器（NCO）; CFO相位误差块，通过从NCO相输出中减去残留CFO相位误差的一半来产生校正的NCO相位输出; 乘法器，通过将导频子载波的复数乘以校正的NCO相位输出的共轭复数值来校正导频子载波相位; 导频处理器，通过导频副载波平均相位产生相位误差; 以及一个环路滤波器，用于对来自导频处理器的相位误差进行滤波，并用滤波相位误差更新NCO。

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