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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。
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公开(公告)号：US20050180524A1
公开(公告)日：2005-08-18
申请号：US11056155
申请日：2005-02-14
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。
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公开(公告)号：US08369388B2
公开(公告)日：2013-02-05
申请号：US12004406
申请日：2007-12-21
申请人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
发明人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
IPC分类号： H04B1/44
CPC分类号： H04B7/0413 , H01L2924/0002 , H01L2924/00
摘要： Embodiments of a wireless transceiver are provided. Embodiments can be used in multiple-input-multiple-output (MIMO) wireless transceivers. In an embodiment, radio control signal bundles are provided as direct parallel interconnects between digital signal processing modules and the radio module of the wireless transceiver to enable a precise low-latency control of radio functions. In another embodiment, a separate physical line is provided to control each radio setting of the radio module, thereby enabling simultaneous real-time control of any number of radio settings. In a further embodiment, the various digital and analog components of the wireless transceiver are integrated within a single chip of the same process technology.
摘要翻译： 提供了无线收发器的实施例。 实施例可以用于多输入多输出（MIMO）无线收发器。 在一个实施例中，无线电控制信号束被提供为数字信号处理模块和无线收发器的无线电模块之间的直接并行互连，以实现无线电功能的精确的低延迟控制。 在另一个实施例中，提供单独的物理线路以控制无线电模块的每个无线电设置，从而实现对任意数量的无线电设置的同时实时控制。 在另一个实施例中，无线收发器的各种数字和模拟组件被集成在相同处理技术的单个芯片内。
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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
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。
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5.发明授权公开(公告)号：US09395265B2
公开(公告)日：2016-07-19
申请号：US14576689
申请日：2014-12-19
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。
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6.发明申请公开(公告)号：US20160178476A1
公开(公告)日：2016-06-23
申请号：US14576689
申请日：2014-12-19
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。
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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）。
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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。
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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
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。
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公开(公告)号：US20050031061A1
公开(公告)日：2005-02-10
申请号：US10940137
申请日：2004-09-14
申请人： Eric Ojard , Amit Bagchi
发明人： Eric Ojard , Amit Bagchi
CPC分类号： H04L25/03006 , H04B1/1036 , H04B1/123 , H04L1/0001
摘要： A filter settings generation operation includes sampling colored noise present at the input of a receiver to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the input present at the receiver is filtered using the filter settings when the signal of interest is present to whiten colored noise that is present with the signal of interest. In modifying the spectral characterization, pluralities of spectral components of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. Particular modifications include amplifying spectral components, weighting spectral components based upon prior spectral components, and averaging spectral components with prior spectral components.
摘要翻译： 滤波器设置生成操作包括在接收器的输入处存在的彩色噪声采样以产生采样信号。 采样信号在感兴趣的频带上进行频谱表征，以产生采样信号的频谱表征。 该光谱特性可能不包括感兴趣的信号。 然后修改光谱表征以产生修改的光谱表征。 然后基于修改的光谱表征生成滤波器设置。 最后，当感兴趣的信号存在时，使用滤波器设置对存在于接收机处的输入进行滤波，以增加与感兴趣信号一起出现的彩色噪声。 在修改光谱表征时，光谱表征的多个光谱分量被独立地修改以产生经修改的光谱表征。 频谱表征的修改可以在频域和/或时域中执行。 具体的修改包括放大频谱分量，基于现有频谱分量对频谱分量进行加权，以及对具有先前频谱分量的频谱分量进行平均。
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