公开(公告)号：US07184393B1

公开(公告)日：2007-02-27

申请号：US10095327

申请日：2002-03-11

申请人： Manoneet Singh ,  Jerry Krinock ,  Thomas Michael Paff

发明人： Manoneet Singh ,  Jerry Krinock ,  Thomas Michael Paff

IPC分类号： H04J11/00

CPC分类号： H04W74/0833 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0078

摘要： A multiple access system for a network using multicarrier modulation. To contend for service a subscriber station selects an upcoming frame in whose contention window it will contend, selects a contention slot within the window, selects a contention channel corresponding to a subset of the carriers used by the network, and imposes a contention code differentially on the carriers in the contention channel.

摘要翻译： 用于使用多载波调制的网络的多址系统。 为了服务，用户台选择将要竞争的竞争窗口中的即将到来的帧，选择窗口内的争用时隙，选择与网络使用的载波子集相对应的争用信道，并将竞争码加密在 竞争渠道中的运营商。

公开(公告)号：US07450654B2

公开(公告)日：2008-11-11

申请号：US11464533

申请日：2006-08-15

申请人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

发明人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

IPC分类号： H04K1/10

CPC分类号： H04L27/2657 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414

摘要： Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.

摘要翻译： 用于OFDM同步和信道估计的方法和装置。 在时间实施例中，接收到的嵌入式系统导频符号在期望的索引位置被逆傅立叶变换，并且与用于提供信道脉冲响应的相关函数的导频符号的傅立叶逆变换的计算的复共轭相关联。 在频域实施例中，嵌入式系统导频符号用导频间隔推测的保护带符号增加，乘以计算的导频系统的缩放的复共轭，并且傅里叶变换为信道脉冲响应。 时间和频率在信道脉冲响应信息的反馈回路中同步。 信道脉冲响应被滤波，内插，然后进行傅里叶变换，以确定用于均衡的信道估计。

公开(公告)号：US20060291578A1

公开(公告)日：2006-12-28

申请号：US11464533

申请日：2006-08-15

申请人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

发明人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

IPC分类号： H04K1/10

CPC分类号： H04L27/2657 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414

摘要： Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.

摘要翻译： 用于OFDM同步和信道估计的方法和装置。 在时间实施例中，接收到的嵌入式系统导频符号在期望的索引位置被逆傅立叶变换，并且与用于提供信道脉冲响应的相关函数的导频符号的傅立叶逆变换的计算的复共轭相关联。 在频域实施例中，嵌入式系统导频符号用导频间隔推测的保护带符号增加，乘以计算的导频系统的缩放的复共轭，并且傅里叶变换为信道脉冲响应。 时间和频率在信道脉冲响应信息的反馈回路中同步。 信道脉冲响应被滤波，内插，然后进行傅里叶变换，以确定用于均衡的信道估计。

公开(公告)号：US07139320B1

公开(公告)日：2006-11-21

申请号：US09975667

申请日：2001-10-11

申请人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

发明人： Manoneet Singh ,  Arvind Lonkar ,  Jerry Krinock

IPC分类号： H04K1/10

CPC分类号： H04L27/2657 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414

摘要： Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.

摘要翻译： 用于OFDM同步和信道估计的方法和装置。 在时间实施例中，接收到的嵌入式系统导频符号在期望的索引位置被逆傅立叶变换，并且与用于提供信道脉冲响应的相关函数的导频符号的傅立叶逆变换的计算的复共轭相关联。 在频域实施例中，嵌入式系统导频符号用导频间隔推测的保护带符号增加，乘以计算的导频系统的缩放的复共轭，并且傅里叶变换为信道脉冲响应。 时间和频率在信道脉冲响应信息的反馈回路中同步。 信道脉冲响应被滤波，内插，然后进行傅里叶变换，以确定用于均衡的信道估计。

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。

公开(公告)号：US20050207508A1

公开(公告)日：2005-09-22

申请号：US10608679

申请日：2003-06-27

申请人： Manoneet Singh ,  Sirikiat Ariyavisitakul

发明人： Manoneet Singh ,  Sirikiat Ariyavisitakul

IPC分类号： H04B7/08 ,  H04L1/02

CPC分类号： H04B7/086 ,  H04B7/084 ,  H04B7/0845

摘要： A spatial diversity receiver and method for determining a multichannel combined symbol timing marker that identifies an energy concentration for a combination of channel delay spreads in order to reduce the complexity of equalization. The receiver includes two or more receiver chains having spatially diverse antennas; a multichannel combined timer; and a multichannel combined equalizer for receiving wireless signals through two or more signal channels. The multichannel combined timer combines energies corresponding to the channel impulse response coefficients for all the channels for determining a series of multichannel combined metrics having associated index cursors, and then determines the multichannel combined symbol timing marker from the index cursor for the largest of the metrics. The symbol timing marker synchronizes the received symbols issued to the equalizer jointly to the energy concentration for the delay spreads combined for all the channels.

摘要翻译： 一种空间分集接收机和方法，用于确定识别用于信道延迟扩展的组合的能量集中的多信道组合符号定时标记，以便降低均衡的复杂度。 接收机包括具有空间多样的天线的两个或多个接收器链; 多通道组合定时器; 以及用于通过两个或更多个信号信道接收无线信号的多通道组合均衡器。 多通道组合定时器组合对应于所有通道的信道脉冲响应系数的能量，用于确定具有相关联的指标光标的一系列多通道组合度量，然后从用于最大量度的索引光标确定多通道组合符号定时标记。 符号定时标记将发送到均衡器的接收符号与用于所有信道的延迟传播的能量集中联合。

公开(公告)号：US09184971B2

公开(公告)日：2015-11-10

申请号：US11739094

申请日：2007-04-23

申请人： Gregory Lerner ,  Nir Tal ,  Dan Wolberg ,  Manoneet Singh ,  Yehuda Azenkot

发明人： Gregory Lerner ,  Nir Tal ,  Dan Wolberg ,  Manoneet Singh ,  Yehuda Azenkot

IPC分类号： H04L27/00 ,  H04L27/26 ,  H04L7/04 ,  H04L7/08

CPC分类号： H04L27/2656 ,  H04L7/042 ,  H04L7/08 ,  H04L27/2657 ,  H04L27/2679 ,  H04L2027/0046 ,  H04L2027/0065

摘要： A novel and useful apparatus for and method of packet detection and carrier frequency offset estimation. The packet detection mechanism is robust to channels and sustains reasonable miss-detect (and false alarm) rates at low SNR values. The mechanism uses a modified combined cross correlation and delay and correlate scheme. A delay and correlate scheme is used in order to handle the effects of multipath while swapping integration and multiplication to increase cross-correlation factors resulting in improved sensitivity in low SNR conditions. Correlation is divided into multiple chains to generate a plurality of partial correlations to observe short patterns in the spread sequence resulting in improved performance in long multipath channels.

摘要翻译： 一种新颖有用的分组检测和载波频率偏移估计方法及方法。 分组检测机制对信道是鲁棒的，并且在低SNR值下维持合理的错误检测（和误报）速率。 该机制采用改进的组合互相关和延迟和相关方案。 使用延迟和相关方案来处理多路径的影响，同时交换积分和乘法以增加互相关因子，从而在低SNR条件下提高灵敏度。 相关性被分成多个链以产生多个部分相关性以观察扩展序列中的短模式，导致在长多径信道中的改进的性能。

公开(公告)号：US20090122926A1

公开(公告)日：2009-05-14

申请号：US11938916

申请日：2007-11-13

申请人： Yehuda AZENKOT ,  Manoneet Singh

发明人： Yehuda AZENKOT ,  Manoneet Singh

IPC分类号： H04L27/06

CPC分类号： H04L27/2647

摘要： Systems and methods for improving data throughput in an interference-rich wireless environment are described herein. Some illustrative embodiments include a method including receiving a modulated radio frequency (RF) signal including a message packet, identifying a preamble of the message packet generating a correlated preamble by combining the message packet preamble with a correlation sequence corresponding to an expected preamble, determining a characteristic of a correlated signal representing the correlated preamble, comparing the determined characteristic of the correlated signal to a first threshold value, and discarding the message packet if the determined characteristic of the correlated signal is below the first threshold value.

摘要翻译： 这里描述了用于在富干扰的无线环境中改善数据吞吐量的系统和方法。 一些说明性实施例包括一种方法，包括接收包括消息分组的调制射频（RF）信号，通过将消息分组前同步码与对应于预期前同步码的相关序列组合来识别生成相关前同步码的消息分组的前同步码， 表示所述相关前导码的相关信号的特征，将所确定的所述相关信号的特性与第一阈值进行比较，以及如果所确定的所述相关信号的特性低于所述第一阈值，则丢弃所述消息分组。

公开(公告)号：US20080043813A1

公开(公告)日：2008-02-21

申请号：US11731932

申请日：2007-04-02

申请人： Yehuda Azenkot ,  Manoneet Singh ,  William L. Abbott

发明人： Yehuda Azenkot ,  Manoneet Singh ,  William L. Abbott

IPC分类号： H04B1/713

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。

公开(公告)号：US08306161B2

公开(公告)日：2012-11-06

申请号：US13105330

申请日：2011-05-11

申请人： June Chul Roh ,  Anuj Batra ,  Manoneet Singh ,  Jaiganesh Balakrishnan

发明人： June Chul Roh ,  Anuj Batra ,  Manoneet Singh ,  Jaiganesh Balakrishnan

IPC分类号： H04L27/06

CPC分类号： H04L25/0216 ,  H04B17/327 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2656 ,  H04L27/2662 ,  H04L27/2675

摘要： A method in accordance with an embodiment of the invention includes producing a first signal match indication based on at least one match indication indicative of a match between at least one signal received in at least one band and a reference signal. The method also includes producing a first signal multipath combined signal based upon the first signal match indication, and detecting a first peak in the first multipath combined signal.

摘要翻译： 根据本发明的实施例的方法包括基于指示在至少一个频带中接收的至少一个信号与参考信号之间的匹配的至少一个匹配指示来产生第一信号匹配指示。 该方法还包括基于第一信号匹配指示产生第一信号多径组合信号，以及检测第一多路复合信号中的第一峰值。