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1. 发明授权

US07948961B2 Wireless proximity estimation 有权
标题翻译：无线邻近估计
公开(公告)号：US07948961B2
公开(公告)日：2011-05-24
申请号：US12011404
申请日：2008-01-25
申请人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen (Bernard) Shung , Chih-Yuan Hsieh , Kyeong Ryu , Prakash Kamath
发明人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen (Bernard) Shung , Chih-Yuan Hsieh , Kyeong Ryu , Prakash Kamath
IPC分类号： H04J3/00
CPC分类号： H04L63/08 , H04L43/0864 , H04L43/50 , H04L63/0492 , H04L63/10
摘要： A wireless content protection system includes a coordinator, a source device, and a sink device. The coordinator includes a scheduler. The source and sink devices each have a content protection manager. One of the content protection manager allocates and releases bandwidth via the coordinator for a test message and a response message for a round-trip time computation. The test message is transmitted in a source-to-sink channel time block. The response message is transmitted in a sink-to-source channel time block. The round-trip time is the period between the end of the source-to-sink channel time block and the beginning of the sink-to-source channel time block.
摘要翻译：无线内容保护系统包括协调器，源设备和宿设备。协调器包括一个调度程序。源和宿设备各具有内容保护管理器。内容保护管理器之一通过协调器分配和释放用于测试消息的带宽和用于往返时间计算的响应消息。测试消息在源到信道信道时间块中传输。响应消息在宿到源信道时间块中发送。往返时间是源到信道信道时间块的结束与信宿到源信道时间块的开始之间的周期。

2. 发明申请

US20080212559A1 Wireless proximity estimation 有权
标题翻译：无线邻近估计
公开(公告)号：US20080212559A1
公开(公告)日：2008-09-04
申请号：US12011404
申请日：2008-01-25
申请人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Bernard Shung , Chih-Yuan Hsieh , Kyeong Ryu , Prakash Kamath
发明人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Bernard Shung , Chih-Yuan Hsieh , Kyeong Ryu , Prakash Kamath
IPC分类号： H04J3/00
CPC分类号： H04L63/08 , H04L43/0864 , H04L43/50 , H04L63/0492 , H04L63/10
摘要： A wireless content protection system includes a coordinator, a source device, and a sink device. The coordinator includes a scheduler. The source and sink devices each have a content protection manager. One of the content protection manager allocates and releases bandwidth via the coordinator for a test message and a response message for a round-trip time computation. The test message is transmitted in a source-to-sink channel time block. The response message is transmitted in a sink-to-source channel time block. The round-trip time is the period between the end of the source-to-sink channel time block and the beginning of the sink-to-source channel time block.
摘要翻译：无线内容保护系统包括协调器，源设备和宿设备。协调器包括一个调度程序。源和宿设备各具有内容保护管理器。内容保护管理器之一通过协调器分配和释放用于测试消息的带宽和用于往返时间计算的响应消息。测试消息在源到信道信道时间块中传输。响应消息在宿到源信道时间块中发送。往返时间是源到信道信道时间块的结束与信宿到源信道时间块的开始之间的周期。

3. 发明授权

US09065682B2 Wireless HD MAC frame format 有权
标题翻译：无线高清MAC帧格式
公开(公告)号：US09065682B2
公开(公告)日：2015-06-23
申请号：US11981935
申请日：2007-10-31
申请人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Shung
发明人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Shung
IPC分类号： H04L12/64 , H04L29/06
CPC分类号： H04L12/6418 , H04L65/607 , H04L2012/6448
摘要： A media access controller (MAC) generates a composite packet having an optimized format for carrying audio, video, and data traffic. A header portion of the composite packet is encoded separately from a data portion of the composite packet. A physical device interface (PHY) is coupled to the MAC. The PHY encodes and decodes between a digital signal and a modulated analog signal. The PHY comprises a high rate physical layer circuit (HRP) and a low rate physical layer circuit (LRP). A radio frequency (RF) transmitter is coupled to the PHY to transmit data.
摘要翻译：媒体接入控制器（MAC）生成具有用于承载音频，视频和数据业务的优化格式的复合分组。复合分组的报头部分与复合分组的数据部分分开编码。物理设备接口（PHY）耦合到MAC。 PHY在数字信号和调制的模拟信号之间进行编码和解码。 PHY包括高速物理层电路（HRP）和低速物理层电路（LRP）。射频（RF）发射机耦合到PHY以传输数据。

4. 发明申请

US20080192726A1 Wireless HD MAC frame format 有权
标题翻译：无线高清MAC帧格式
公开(公告)号：US20080192726A1
公开(公告)日：2008-08-14
申请号：US11981935
申请日：2007-10-31
申请人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Shung
发明人： Kumar Mahesh , Karthik Krishnaswami , Karen Wang , Jeffrey M. Gilbert , Chuen-Shen Shung
IPC分类号： H04J3/24
CPC分类号： H04L12/6418 , H04L65/607 , H04L2012/6448
摘要： A media access controller (MAC) generates a composite packet having an optimized format for carrying audio, video, and data traffic. A header portion of the composite packet is encoded separately from a data portion of the composite packet. A physical device interface (PHY) is coupled to the MAC. The PHY encodes and decodes between a digital signal and a modulated analog signal. The PHY comprises a high rate physical layer circuit (HRP) and a low rate physical layer circuit (LRP). A radio frequency (RF) transmitter is coupled to the PHY to transmit data.
摘要翻译：媒体接入控制器（MAC）生成具有用于承载音频，视频和数据业务的优化格式的复合分组。复合分组的报头部分与复合分组的数据部分分开编码。物理设备接口（PHY）耦合到MAC。 PHY在数字信号和调制的模拟信号之间进行编码和解码。 PHY包括高速物理层电路（HRP）和低速物理层电路（LRP）。射频（RF）发射机耦合到PHY以传输数据。

5. 发明授权

US08457026B1 Enhanced wireless data rates using multiple beams 有权
标题翻译：使用多个波束增强的无线数据速率
公开(公告)号：US08457026B1
公开(公告)日：2013-06-04
申请号：US12699781
申请日：2010-02-03
申请人： Keang-Po Ricky Ho , Jianhan Liu , Guocong Song , Karim Nassiri Toussi , Jeffrey M. Gilbert
发明人： Keang-Po Ricky Ho , Jianhan Liu , Guocong Song , Karim Nassiri Toussi , Jeffrey M. Gilbert
IPC分类号： H04B7/00 , H01Q3/00
CPC分类号： H01Q3/30 , H04B7/0617 , H04B7/0619
摘要： Enhanced wireless speeds are obtained using multiple transmission beams. In one example, a transmitter has a signal processor to receive a plurality of data streams, a plurality of analog converters each coupled to the signal processor to receive the plurality of data streams from the signal processor and to modulate the data streams onto carrier waves, and a plurality of phase shifters each coupled to an analog converter to each receive a modulated stream. A first antenna is coupled to more than one of the plurality of phase shifters to receive the modulated data stream from each phase shifter and transmit it on its respective carrier wave, and a second antenna is coupled to receive at least one modulated data stream and transmit it on its respective carrier wave.
摘要翻译：使用多个发射波束获得增强的无线速度。在一个示例中，发射机具有用于接收多个数据流的信号处理器，多个模拟转换器，每个模拟转换器耦合到信号处理器以从信号处理器接收多个数据流并且将数据流调制到载波上，以及多个移相器，每个移相器耦合到模拟转换器以各自接收经调制的流。第一天线耦合到多个移相器中的多于一个移相器以接收来自每个移相器的调制数据流，并在其相应的载波上进行发送，并且第二天线被耦合以接收至少一个调制数据流并传输它在其各自的载波上。

6. 发明授权

US08270528B2 Packet detection, synchronization, and frequency offset estimation 有权
标题翻译：分组检测，同步和频率偏移估计
公开(公告)号：US08270528B2
公开(公告)日：2012-09-18
申请号：US12800815
申请日：2010-05-21
申请人： Chaohuang Zeng , Jeffrey M. Gilbert , Won-Joon Choi , Xiaoru Zhang
发明人： Chaohuang Zeng , Jeffrey M. Gilbert , Won-Joon Choi , Xiaoru Zhang
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L7/042 , H04L25/0226 , H04L2027/003
摘要： Techniques are disclosed for detecting a packet. One technique includes sampling a received signal to produce a sequence of samples wherein the sequence of samples includes a plurality of subsequences of samples; cross correlating the subsequences of samples with a known form of the subsequence to produce cross correlations; self correlating the cross correlations to produce a plurality of self correlations; summing the self correlations; and processing the sum of the self correlations.
摘要翻译：公开了用于检测分组的技术。一种技术包括对接收到的信号进行采样以产生样本序列，其中样本序列包括多个样本的子序列; 将样本的子序列与已知形式的子序列交叉相关以产生互相关; 自相关互相关产生多个自相关; 求和自相关; 并处理自相关的总和。

7. 发明授权

US08155712B2 Low power very high-data rate device 有权
标题翻译：低功耗非常高的数据速率设备
公开(公告)号：US08155712B2
公开(公告)日：2012-04-10
申请号：US11726874
申请日：2007-03-22
申请人： James P. K. Gilb , Jeffrey M. Gilbert , Sheung Li , Karim Nassiri-Toussi
发明人： James P. K. Gilb , Jeffrey M. Gilbert , Sheung Li , Karim Nassiri-Toussi
IPC分类号： H04B1/38
CPC分类号： H04B7/0691 , H01Q3/26 , H04B7/0617 , H04W52/287 , H04W52/42
摘要： A radio frequency (RF) transmitter has a plurality of digitally controlled phased array antennas coupled to and controlled by the processor to transmit data. The processor is to enable one or more antennas to be turned off during a use of the apparatus to reduce a power consumption of the apparatus.
摘要翻译：射频（RF）发射机具有耦合到处理器并由其处理器控制以发射数据的多个数字控制相控阵列天线。该处理器是在使用该设备期间使一个或多个天线能够被关闭以减少设备的功耗。

8. 发明授权

US08000227B2 Decision feedback channel estimation and pilot tracking for OFDM systems 有权
标题翻译： OFDM系统的决策反馈信道估计和导频跟踪
公开(公告)号：US08000227B2
公开(公告)日：2011-08-16
申请号：US12688733
申请日：2010-01-15
申请人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ning Zhang , Yi-Hsiu Wang , Tao-Fei Samuel Ng
发明人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ning Zhang , Yi-Hsiu Wang , Tao-Fei Samuel Ng
IPC分类号： H04J11/00
CPC分类号： H04L25/022 , H04L25/0236 , H04L27/2647 , H04L2025/03522
摘要： Current OFDM systems use a limited number of symbols and/or sub-channels to provide approximations for channel estimations and pilot tracking, i.e. phase estimations. For example, two training symbols in the preamble of a data packet are used to provide channel estimation. Four of the fifty-four sub-channels are reserved for providing phase estimation. However, noise and other imperfections can cause errors in both of these estimations, thereby degrading system performance.Advantageously, decision feedback mechanisms can be provided to significantly improve channel estimation and pilot tracking in OFDM systems. The decision feedback mechanisms can use data symbols in the data packet to improve channel estimation as well as data sub-channels to improve pilot tracking.
摘要翻译：当前OFDM系统使用有限数量的符号和/或子信道来提供用于信道估计和导频跟踪（即相位估计）的近似。例如，使用数据分组的前导码中的两个训练符号来提供信道估计。五十四个子通道中的四个保留用于提供相位估计。然而，噪声和其他缺陷可能会导致这两种估计中的错误，从而降低系统性能。有利地，可以提供决策反馈机制以显着地改善OFDM系统中的信道估计和导频跟踪。决策反馈机制可以使用数据分组中的数据符号来改进信道估计以及数据子信道，以改进导频跟踪。

9. 发明授权

US07940794B2 Dynamic channel bandwidth management 有权
标题翻译：动态频道带宽管理
公开(公告)号：US07940794B2
公开(公告)日：2011-05-10
申请号：US11193017
申请日：2005-07-29
申请人： Ning Zhang , Jeffrey M. Gilbert
发明人： Ning Zhang , Jeffrey M. Gilbert
IPC分类号： H04J3/16 , H04Q7/28 , H04B1/38
CPC分类号： H04W28/20 , H04K3/226 , H04K3/822 , H04K2203/18 , H04W76/20 , H04W88/06
摘要： To provide an extra wide bandwidth communication using standard channels, multiple non-overlapping channels can be used. To provide a 40 MHz communication, two non-overlapping 20 MHz channels, i.e. a control channel and an extension channel, can be used to provide an effective 40 MHz channel. Advantageously, a wireless device can dynamically detect 20/40 MHz signals on a packet-by-packet basis, thereby facilitating commercially viable 40 MHz communication. The wireless device can monitor traffic on the extension channel to facilitate accurate 20/40 MHz decision making. Protection, e.g. legacy preambles and RTS/CTS headers, can be provided on the control and extension channels.
摘要翻译：为了使用标准信道提供额外的宽带宽通信，可以使用多个非重叠信道。为了提供40MHz通信，可以使用两个不重叠的20MHz信道，即控制信道和扩展信道，以提供有效的40MHz信道。有利地，无线设备可以逐个分组地动态地检测20/40MHz信号，从而促进商业上可行的40MHz通信。无线设备可以监控扩展通道上的流量，以便于准确的20/40 MHz决策。保护，例如传统的前导码和RTS / CTS标头可以在控制和扩展通道上提供。

10. 发明授权

US07924932B2 Decoding system and method for digital communications 有权
标题翻译：数字通信解码系统和方法
公开(公告)号：US07924932B2
公开(公告)日：2011-04-12
申请号：US12615024
申请日：2009-11-09
申请人： John S. Thomson , Paul J. Husted , Ardavan Maleki Tehrani , Jeffrey M. Gilbert , William J. McFarland , Lars E. Thon , Yi-Hsiu Wang
发明人： John S. Thomson , Paul J. Husted , Ardavan Maleki Tehrani , Jeffrey M. Gilbert , William J. McFarland , Lars E. Thon , Yi-Hsiu Wang
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/067 , H03M13/25 , H03M13/3961 , H03M13/41 , H03M13/6325 , H03M13/6362 , H04K3/228 , H04L1/005 , H04L1/0054 , H04L27/38
摘要： A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between good and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.
摘要翻译：维特比解码系统将接收的QAM星座中的比特解释为多值参数，而不是二进制值参数。它使用这些多值参数来执行维特比算法，以提供优于硬判决解码的结果。系统使用非阶梯线性或弯曲传递函数来向位指定值，而不是将硬0-1函数应用于QAM数据。在另一方面，一种系统基于其估计的可靠性来区分数据比特，更多地强调使用各种技术中的任何一种来解码可靠比特比不可靠比特。通过区分好坏位和去强调或忽略不可靠位，系统可以显着减少不可纠正的错误和数据包丢失。

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