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20 条记录 (耗时 0.034 秒)

    Multiple transmit antenna interleaver design
    3.
    发明申请
    Multiple transmit antenna interleaver design 有权
    多发射天线交织器设计

    公开(公告)号：US20050265469A1

    公开(公告)日：2005-12-01

    申请号：US11137259

    申请日：2005-05-25

    申请人： Carlos Aldana ,  Amit Bagchi ,  Min Hoo

    发明人： Carlos Aldana ,  Amit Bagchi ,  Min Hoo

    IPC分类号： H04K1/10 ,  H04L1/00 ,  H04L27/26

    CPC分类号： H04B7/0613 ,  H04L1/0059 ,  H04L1/0071 ,  H04L27/2608

    摘要： An arrangement of interleavers allocates bits from an input symbol across sub-symbols transmitted via sub-carriers of multiple orthogonal frequency division multiplex (OFDM) carriers. The input bits are allocated in a fashion to provide separation across subcarriers, and rotation of sub-symbols across the OFDM carriers provides additional robustness in the present of signal path impairments.

    摘要翻译： 交织器的布置分配来自多个正交频分复用（OFDM）载波的子载波发送的子符号之间的输入符号的比特。 以一种方式分配输入比特以提供跨子载波的​​分离，并且跨OFDM载波的子符号的旋转在信号路径损伤的当前提供额外的鲁棒性。

    Signaling format for WLANS
    4.
    发明申请
    Signaling format for WLANS 有权
    WLANS的信令格式

    公开(公告)号：US20050181800A1

    公开(公告)日：2005-08-18

    申请号：US10973611

    申请日：2004-10-26

    申请人： Jason Trachewsky ,  George Kondylis ,  Amit Bagchi

    发明人： Jason Trachewsky ,  George Kondylis ,  Amit Bagchi

    IPC分类号： H04L5/14 ,  H04L12/28 ,  H04L12/56 ,  H04L27/00 ,  H04L27/26 ,  H04W24/00 ,  H04W84/12 ,  H04W99/00 ,  H04Q7/20

    CPC分类号： H04L5/1438 ,  H04W24/00 ,  H04W84/12

    摘要： A method for wireless communication begins by determining whether legacy devices are within a proximal region of the wireless communication. The method continues, when at least one legacy device is within the proximal region, formatting a frame to include: a legacy preamble; a signal field; an extended preamble; at least one additional signal field; at least one service field; an inter frame gap; and a data field.

    摘要翻译： 一种用于无线通信的方法是通过确定传统设备是否在无线通信的近端区域内开始。 当至少一个传统设备在近端区域内时，该方法继续，格式化帧以包括：传统前导码; 信号场; 扩展前言; 至少一个附加信号场; 至少一个服务领域; 帧间间隔; 和一个数据字段。

    Full head surrogate with live neurons for helmet testing and evaluation
    5.
    发明授权
    Full head surrogate with live neurons for helmet testing and evaluation 有权
    用头盔测试和评估的活神经元的全头替代

    公开(公告)号：US09395265B2

    公开(公告)日：2016-07-19

    申请号：US14576689

    申请日：2014-12-19

    申请人： Thomas O'Shaughnessy ,  Ryan McCulloch ,  Amit Bagchi ,  Kirth Simmonds

    发明人： Thomas O'Shaughnessy ,  Ryan McCulloch ,  Amit Bagchi ,  Kirth Simmonds

    IPC分类号： C12M1/34 ,  C12M3/00 ,  G01M7/08 ,  C12M1/12 ,  G01N33/50

    CPC分类号： G01M7/08 ,  C12M23/12 ,  C12M25/14 ,  C12M41/00 ,  C12M41/40 ,  G01L5/0052 ,  G01L5/14 ,  G01N33/5058

    摘要： A system for testing a helmet includes a simulated skull comprising a cranial cavity; a brain surrogate disposed inside the cranial cavity; and a cell pack comprising at least one culture well suitable for three-dimensional growth of live neurons therein, the cell pack comprising a retaining plate having at least one opening exposing a portion of a flexible membrane containing the at least one cell culture well, the exposed membrane portion being substantially flush with an exterior surface of the retaining plate, wherein the brain surrogate is configured to closely surround the cell pack inside the simulated skull. Also disclosed is a method of using the system.

    摘要翻译： 用于测试头盔的系统包括：颅骨，包括颅腔; 设置在颅腔内的脑替代物; 以及包含至少一种适合于其中的活神经元的三维生长的培养物的细胞包，所述细胞包含有保持板，所述保持板具有至少一个开口，所述至少一个开口暴露包含至少一个细胞培养物的柔性膜的一部分， 暴露的膜部分基本上与保持板的外表面齐平，其中脑替代物构造成紧密围绕模拟颅骨内的细胞包。 还公开了使用该系统的方法。

    Full Head Surrogate with Live Neurons for Helmet Testing and Evaluation
    6.
    发明申请
    Full Head Surrogate with Live Neurons for Helmet Testing and Evaluation 有权
    用头盔测试和评估的实时神经元的全头代理

    公开(公告)号：US20160178476A1

    公开(公告)日：2016-06-23

    申请号：US14576689

    申请日：2014-12-19

    申请人： Thomas O'Shaughnessy ,  Ryan McCulloch ,  Amit Bagchi ,  Kirth Simmonds

    发明人： Thomas O'Shaughnessy ,  Ryan McCulloch ,  Amit Bagchi ,  Kirth Simmonds

    IPC分类号： G01M7/08 ,  G01N33/50 ,  C12M1/12

    CPC分类号： G01M7/08 ,  C12M23/12 ,  C12M25/14 ,  C12M41/00 ,  C12M41/40 ,  G01L5/0052 ,  G01L5/14 ,  G01N33/5058

    摘要： A system for testing a helmet includes a simulated skull comprising a cranial cavity; a brain surrogate disposed inside the cranial cavity; and a cell pack comprising at least one culture well suitable for three-dimensional growth of live neurons therein, the cell pack comprising a retaining plate having at least one opening exposing a portion of a flexible membrane containing the at least one cell culture well, the exposed membrane portion being substantially flush with an exterior surface of the retaining plate, wherein the brain surrogate is configured to closely surround the cell pack inside the simulated skull. Also disclosed is a method of using the system.

    摘要翻译： 用于测试头盔的系统包括：颅骨，包括颅腔; 设置在颅腔内的脑替代物; 以及包含至少一种适合于其中的活神经元的三维生长的培养物的细胞包，所述细胞包含有保持板，所述保持板具有至少一个开口，所述至少一个开口暴露包含至少一个细胞培养物的柔性膜的一部分， 暴露的膜部分基本上与保持板的外表面齐平，其中脑替代物构造成紧密围绕模拟颅骨内的细胞包。 还公开了使用该系统的方法。

    Signaling format for wireless communications
    7.
    发明申请
    Signaling format for wireless communications 有权
    用于无线通信的信令格式

    公开(公告)号：US20050180524A1

    公开(公告)日：2005-08-18

    申请号：US11056155

    申请日：2005-02-14

    申请人： Christopher Hansen ,  Jason Trachewsky ,  Amit Bagchi ,  George Kondylis

    发明人： Christopher Hansen ,  Jason Trachewsky ,  Amit Bagchi ,  George Kondylis

    IPC分类号： H04L27/04

    CPC分类号： H04L1/0001

    摘要： Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.

    摘要翻译： 用于无线通信的方法，设备和系统通过确定传统设备是否在无线通信的近端区域内来生成信号。 当至少一个传统设备在近侧区域内时，帧被格式化以包括前导字段，信号字段和数据字段。 此外，未编码比特根据编码格式进行编码。 编码格式根据前导码和适用的子字段长度中的比特来确定。

    Received signal determination based upon frame classification
    8.
    发明申请
    Received signal determination based upon frame classification 有权
    基于帧分类的接收信号确定

    公开(公告)号：US20070110197A1

    公开(公告)日：2007-05-17

    申请号：US11542984

    申请日：2006-10-04

    申请人： Amit Bagchi ,  Rajendra Moorti

    发明人： Amit Bagchi ,  Rajendra Moorti

    IPC分类号： H04B1/10

    CPC分类号： H04B1/406

    摘要： A receiver includes digital logic for defining a plurality of signal paths for an ingoing digital signal to determine a frame classification. Frames are classified according to a combination of readings of a plurality of correlation block and relative signal (power) strengths. Power detection is specified for frequency bands of interest. The combination of readings and their corresponding pattern may be used to determine whether a frame is being transmitted in a lower bandwidth channel, an upper bandwidth channel or a large bandwidth channel that overlaps the lower and upper bandwidth channels. A transmission type (legacy, mixed mode, Greenfield) may subsequently be determined based upon the identity of the frame channel.

    摘要翻译： 接收机包括用于定义用于输入数字信号的多个信号路径以确定帧分类的数字逻辑。 帧根据多个相关块的读数和相对信号（功率）强度的组合进行分类。 为感兴趣的频段指定功率检测。 读数和它们对应的模式的组合可用于确定帧是否在与较低和较高带宽信道重叠的较低带宽信道，较高带宽信道或大带宽信道中传输。 随后可以基于帧信道的身份来确定传输类型（传统的，混合模式，绿地）。

    MIMO radio interfaces
    9.
    发明申请
    MIMO radio interfaces 有权
    MIMO无线接口

    公开(公告)号：US20070026837A1

    公开(公告)日：2007-02-01

    申请号：US11494102

    申请日：2006-07-27

    申请人： Amit Bagchi

    发明人： Amit Bagchi

    IPC分类号： H04B1/28

    CPC分类号： H04B1/30 ,  H03G3/3068

    摘要： A receiver front end includes a plurality of in-phase and quadrature phase receive processing blocks operable at first and second frequency bands and further includes a plurality of filtering and amplification blocks disposed within a corresponding ingoing signal path, a plurality of received signal strength indicator (RSSI) blocks coupled to receive an ingoing analog signal from a corresponding plurality of nodes disposed throughout the ingoing signal path, each of the plurality of RSSI blocks producing a signal strength indication, and wherein a baseband processor is operable to receive a selected signal strength indication and to produce at least one gain setting to at least one amplification block within the in-phase or quadrature phase receive processing blocks. In operation, the baseband processor receives a signal strength indication from each RSSI block to determine a total amount of gain and appropriate gain distribution within the receive signal path.

    摘要翻译： 接收器前端包括可在第一和第二频带操作的多个同相和正交相位接收处理块，并且还包括设置在对应的加入信号路径内的多个滤波和放大块，多个接收信号强度指示器 RSSI）块，其耦合以从穿过所述加入信号路径中的对应的多个节点接收加入模拟信号，所述多个RSSI块中的每一个产生信号强度指示，并且其中基带处理器可操作以接收所选择的信号强度指示 并且对同相或正交相位接收处理块内的至少一个放大块产生至少一个增益设置。 在操作中，基带处理器从每个RSSI块接收信号强度指示，以确定接收信号路径内的增益总量和适当的增益分布。

    Carrier detection for multiple receiver systems
    10.
    发明申请
    Carrier detection for multiple receiver systems 有权
    多个接收机系统的载波检测

    公开(公告)号：US20060198477A1

    公开(公告)日：2006-09-07

    申请号：US11132939

    申请日：2005-05-19

    申请人： R. Moorti ,  Rohit Gaikwad ,  Amit Bagchi

    发明人： R. Moorti ,  Rohit Gaikwad ,  Amit Bagchi

    IPC分类号： H04B7/10 ,  H04B7/02 ,  H04L27/04

    CPC分类号： H04L1/0631 ,  H04B7/10 ,  H04L1/0059 ,  H04L27/00

    摘要： The present invention provides a method for carrier detection associated with the receipt of MIMO RF packet communications. This involves receiving multiple MIMO RF packet communications with multiple receiver pathways, wherein the RF packet communications each comprise a preamble and data. The RF packet communications are sampled by a carrier detector before, during or after conversion to baseband. The carrier detectors are used to produce a set of carrier detection metrics for each reception pathway. These carrier detection metrics may be combined arithmetically with those of other reception pathways to produce a multi-reception pathway carrier detect. Alternatively, these carrier detection metrics can be processed to produce a logical decision or binary detection signal value associated with each reception pathway, which is then logically combined with the logical decisions of other reception pathways to produce a multi-reception pathway carrier detect.

    摘要翻译： 本发明提供了一种与接收MIMO RF分组通信相关联的载波检测方法。 这包括接收与多个接收机路径的多个MIMO RF分组通信，其中RF分组通信各自包括前导码和数据。 在转换到基带之前，期间或之后，载波检测器对RF分组通信进行采样。 载波检测器用于为每个接收路径产生一组载波检测度量。 这些载波检测度量可以与其他接收路径的载波检测度量进行算术计算，以产生多接收路径载波检测。 或者，可以处理这些载波检测度量以产生与每个接收路径相关联的逻辑判决或二进制检测信号值，然后逻辑判定或二进制检测信号值与其他接收路径的逻辑决策逻辑组合以产生多接收路径载波检测。