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11.发明授权公开(公告)号：US08228806B2
公开(公告)日：2012-07-24
申请号：US12563979
申请日：2009-09-21
申请人： Thomas Edward Pare, Jr. , Kiran Uln , Peter Loc
发明人： Thomas Edward Pare, Jr. , Kiran Uln , Peter Loc
CPC分类号： H04L27/0012 , H04L1/0091 , H04L27/2613
摘要： A method and system of communicating packets and detecting packets are disclosed. In a first aspect, the method and system comprise enabling the detection of a very high throughput (VHT) signal field. The VHT signal field is distinguishable from other signal fields, wherein the VHT signal field allows for a backward compatibility with other devices. In a second aspect, the method and system comprise initializing the device to be in receive mode and receiving at least one signal field symbol and detecting the presence of additional signal field symbols. The method and system further include distinguishing a very high throughput (VHT) signal field from other signal field symbols and decoding the VHT signal field parameters uniquely describing the VHT packet format.
摘要翻译： 公开了传送数据包和检测数据包的方法和系统。 在第一方面，该方法和系统包括能够检测非常高吞吐量（VHT）信号场。 VHT信号域与其他信号场区分开，其中VHT信号域允许与其它设备的向后兼容性。 在第二方面，所述方法和系统包括将设备初始化为处于接收模式并且接收至少一个信号字段符号并检测附加信号字段符号的存在。 该方法和系统还包括将非常高的吞吐量（VHT）信号字段与其他信号字段符号区分开来，并解码唯一描述VHT分组格式的VHT信号字段参数。
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12.发明授权Method and apparatus for adaptive reduced overhead transmit beamforming for wireless communication systems 有权用于无线通信系统的自适应减少开销发射波束成形的方法和装置公开(公告)号：US08040970B2
公开(公告)日：2011-10-18
申请号：US11949706
申请日：2007-12-03
IPC分类号： H04L27/00
CPC分类号： H04B7/0413
摘要： A multi input multi output (MIMO) transceiver having a channel estimation module being responsive to received samples including channel state information (CSI) and operative to generate time domain beamforming parameters, in accordance with an embodiment of the present invention. The multi input multi output (MIMO) transceiver further includes an adaptive beamforming parameters module coupled to receive said time domain beamforming parameters and operative to generate time domain adaptive beamforming parameters, said adaptive beamforming parameters module operative to process said time domain beamforming parameters to generate frequency domain adaptive beamforming parameters, a decoding module coupled to receive said frequency domain adaptive beamforming parameters and operative to generate data bits, a channel parameters module coupled to receive said data bits and operative to extract said time domain adaptive beamforming parameters, an encoding module coupled to receive said time domain adaptive beamforming parameters and operative to generate a data packet, said encoding module operative to encode said data packet to generate a modulated data stream, and a beamform matrices module coupled to receive said modulated data stream and operative to generate a beamformed data stream based on said frequency domain adaptive beamforming parameters, said MIMO transceiver operative to process said beamformed data stream to generate output signals and to transmit said output signals by forming beam patterns.
摘要翻译： 一种多输入多输出（MIMO）收发器，具有信道估计模块，响应于包括信道状态信息（CSI）的接收样本，并且可操作以产生时域波束成形参数，根据本发明的实施例。 所述多输入多输出（MIMO）收发器还包括自适应波束成形参数模块，其耦合以接收所述时域波束成形参数并且可操作以产生时域自适应波束成形参数，所述自适应波束成形参数模块可操作以处理所述时域波束成形参数以产生频率 域自适应波束成形参数，解码模块，被耦合以接收所述频域自适应波束形成参数并且可操作以产生数据比特，信道参数模块，被耦合以接收所述数据比特并且可操作以提取所述时域自适应波束成形参数，编码模块耦合到 接收所述时域自适应波束成形参数并且可操作以产生数据分组，所述编码模块可操作地编码所述数据分组以生成调制数据流，以及波束形矩阵模块，耦合以接收所述调制数据流并且可操作以产生bea 基于所述频域自适应波束形成参数的成形数据流，所述MIMO收发器可操作以处理所述波束形成的数据流以产生输出信号并通过形成波束图案来发送所述输出信号。
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公开(公告)号：US07995672B2
公开(公告)日：2011-08-09
申请号：US12632707
申请日：2009-12-07
IPC分类号： H04B7/02
CPC分类号： H04L5/0007 , H04B7/0617 , H04L25/0204 , H04L25/0224 , H04L25/0232 , H04L25/0242 , H04L25/03159 , H04L27/2626 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2027/0026 , H04L2027/0055 , H04L2027/0065
摘要： An embodiment of the present invention includes a transceiver for use in a multi-input-multi-output (MIMO) Orthogonal Frequency Domain Multiplexing (OFDM) wireless communication system. The transceiver decodes and remodulates certain signal fields and uses the same to update the coefficients of a frequency equalizer thereby improving channel estimation and extending training.
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14.发明授权Method and apparatus for calibration of an implicit beamforming wireless system 有权用于校准隐式波束形成无线系统的方法和装置公开(公告)号：US08797948B2
公开(公告)日：2014-08-05
申请号：US12692356
申请日：2010-01-22
IPC分类号： H04W4/00
CPC分类号： H04B7/0626 , H04B7/0632 , H04B17/12 , H04W16/28
摘要： A first embodiment is a method of calibrating an implicit beamforming wireless system wherein the implicit wireless system comprises a beamformer and a beamformee. The method comprises associating the beamformer with the beamformee, sending a sounding packet from the beamformer to the beamformee, receiving a sounding response at the beamformer wherein the sounding response contains explicit channel state information as estimated by beamformee, computing implicit channel state information at the beamformer based on transmissions from the beamformee, passing explicit and implicit channel state information into the beamformer, computing a set of compensation parameters and loading the set of compensation parameters into the beamformer thereby enabling the beamformer to implicitly beamform to a device that does not support explicit beamforming.
摘要翻译： 第一实施例是校准隐式波束成形无线系统的方法，其中隐式无线系统包括波束形成器和波束形成器。 该方法包括将波束形成器与波束形成器相关联，将波束形成器的探测分组发送到波束成形器，在波束形成器处接收探测响应，其中探测响应包含由波束形成器估计的显式信道状态信息，在波束形成器处计算隐式信道状态信息 基于来自波束形成器的传输，将显式和隐式信道状态信息传递到波束形成器中，计算一组补偿参数并将该组补偿参数加载到波束形成器中，从而使波束形成器能够隐式地波束形成不支持显式波束成形的设备 。
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公开(公告)号：US08081615B2
公开(公告)日：2011-12-20
申请号：US12471187
申请日：2009-05-22
IPC分类号： H04W4/00
CPC分类号： H04W4/20
摘要： The present invention relates generally to wireless transceivers, and more particularly but not exclusively to non 802.11 detection and avoidance methodologies for wireless devices including transceivers. In one or more implementations, a method for detecting non 802.11 operating in the unlicensed 5.25-5.35 and 5.47-10.725 GHz radio bands, using wireless devices, such as AP, are provided. An AP is used to automatically detect the presence of non 802.11 on all channels in these bands, alert all of its clients, and move to another channel that is known to be devoid of non 802.11 using one or more implementations.
摘要翻译： 本发明一般涉及无线收发器，更具体地但非排他地涉及用于包括收发器的无线设备的非802.11检测和回避方法。 在一个或多个实现中，提供了一种使用诸如AP之类的无线设备来检测未经授权的5.25-5.35和5.47-10.725GHz无线电频段中的非802.11操作的方法。 AP用于自动检测这些频带中所有信道上非802.11的存在，提醒其所有客户端，并使用一个或多个实现移动到已知无802.11的另一个信道。
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16.发明授权Nested preamble for multi input multi output orthogonal frequency division multiplexing 有权多输入多输出正交频分复用的嵌套前导码公开(公告)号：US07856068B1
公开(公告)日：2010-12-21
申请号：US11475606
申请日：2006-06-26
IPC分类号： H04B7/02
CPC分类号： H04L25/0242 , H04B7/0617 , H04L25/0232 , H04L27/2613 , H04L27/2657 , H04L2027/0026 , H04L2027/0055 , H04L2027/0065
摘要： A multi input multi output (MIMO) system for transmitting and receiving packets having a nested preamble format included in said packets and having poly-carrier long training sequence (LTS) and signal field (SIG) for training receivers, in accordance with an embodiment of the present invention. Said packets being transmitted using the modulation scheme of a wireless local area network (WLAN) standard, said nested preamble format for allowing said receivers to use one or more receiver antennas to interpret said LTS and said SIG to increase the efficiency of said MIMO system.
摘要翻译： 一种多输入多输出（MIMO）系统，用于发送和接收包括在所述分组中的具有嵌套前导码格式的分组，并且具有用于训练接收机的多载波长训练序列（LTS）和信号字段（SIG） 本发明。 所述分组使用无线局域网（WLAN）标准的调制方案发送，所述嵌套前导码格式允许所述接收机使用一个或多个接收机天线来解释所述LTS和所述SIG，以提高所述MIMO系统的效率。
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17.发明授权Method and apparatus for closed loop beamforming in wireless communication systems 有权无线通信系统中闭环波束成形的方法和装置公开(公告)号：US08687717B2
公开(公告)日：2014-04-01
申请号：US12500154
申请日：2009-07-09
申请人： Thomas Edward Pare, Jr. , John Wong
发明人： Thomas Edward Pare, Jr. , John Wong
IPC分类号： H04L27/28
CPC分类号： H04B7/0617 , H04B7/0632
摘要： Varying embodiments of the present invention describe a closed loop system for processing the beamforming information, qualifying the expected performance, activating and deactivating the beamforming system. A first embodiment is a method for closed loop beamforming in a wireless communication system, the system comprising a transmitter and a receiver, the method comprising initiating beamforming on a communication channel between the transmitter and the receiver, monitoring the communication channel, periodically determining a condition of the communication channel and controlling beamforming based on the condition of the communication channel.
摘要翻译： 本发明的不同实施例描述了一种用于处理波束形成信息的闭环系统，限定预期的性能，启动和停用波束形成系统。 第一实施例是在无线通信系统中闭环波束成形的方法，该系统包括发射机和接收机，该方法包括在发射机与接收机之间的通信信道上发起波束成形，监视通信信道，周期性地确定条件 的通信信道，并且基于通信信道的条件来控制波束成形。
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18.发明授权公开(公告)号：US07545891B1
公开(公告)日：2009-06-09
申请号：US11074921
申请日：2005-03-07
IPC分类号： H04L27/06
CPC分类号： H04L25/03159 , H04L5/0007 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03522
摘要： A modem system for transmitting and receiving signals having a frequency domain equalizer (FEQ) being responsive to a plurality of received data symbols for processing the same to generate one or more equalized data symbols, said modem system being responsive to a plurality of received baseband signals for processing the same to generate said plurality of received data symbols, said plurality of received data symbols for including one or more sets of pilot tones, said FEQ for processing said sets of pilot tones to generate one or more sets of equalized sets of pilot tones, in accordance with an embodiment of the present invention. The modem system further includes a frequency offset detection module being responsive to said sets of equalized pilot tones to generate one or more instantaneous carrier offsets, said modem system for processing said instantaneous carrier offsets to generate one or more frequency corrections for applying the same to said plurality of received baseband signals to remove carrier offsets therefrom, wherein the flexible architecture of said modem system allows for removal of said carrier offsets to improve reception of said plurality of received baseband signals.
摘要翻译： 一种用于发送和接收具有频域均衡器（FEQ）的信号的调制解调器系统，该频域均衡器响应于多个接收的数据符号进行处理以产生一个或多个均衡的数据符号，所述调制解调器系统响应于多个接收的基带信号 用于处理它们以产生所述多个接收数据符号，所述多个接收数据符号用于包括一组或多组导频音，所述FEQ用于处理所述导频音组以产生一组或多组均衡的导频音集 ，根据本发明的实施例。 调制解调器系统还包括频率偏移检测模块，响应于所述均衡导频音调集合以产生一个或多个瞬时载波偏移，所述调制解调器系统用于处理所述瞬时载波偏移以产生一个或多个频率校正，以将其应用于所述 多个接收的基带信号以从其中去除载波偏移，其中所述调制解调器系统的灵活架构允许去除所述载波偏移以改善所述多个接收的基带信号的接收。
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19.发明授权Symbol-based decision feedback equalizer (DFE) optimal equalization method and apparatus with maximum likelihood sequence estimation for wireless receivers under multipath channels 有权基于符号的决策反馈均衡器（DFE）最优均衡方法和在多径信道下的无线接收机的最大似然序列估计的装置公开(公告)号：US07266146B2
公开(公告)日：2007-09-04
申请号：US10402710
申请日：2003-03-28
IPC分类号： H03H7/40
CPC分类号： H04L25/03292 , H04L23/02 , H04L25/03267 , H04L2025/0342 , H04L2027/0038
摘要： A maximum likelihood sequence estimator (MLSE) equalizer device being included in an MLSE sub-receiver includes a feedforward circuit responsive to input data for processing the same to generate feedforward circuit output, said input data being generated from transmitted data being transmitted by wireless transmission, in accordance with an embodiment of the present invention. The MLSE equalizer device further includes a feedback circuit responsive to said input data for processing the same to generate feedback circuit output. The MLSE equalizer device further includes an equalizer training module responsive to said feedforward circuit output and said feedback circuit output for training said MLSE equalizer device by minimizing the difference between said feedforward circuit output and said feedback circuit output, said MLSE equalizer device being trained to generate equalized data, said MLSE sub-receiver for decoding said equalized data to generate decoded transmitted data by mitigating the effects of multi-path communication channel due to wireless transmission of said transmitted data.
摘要翻译： 包括在MLSE子接收机中的最大似然序列估计器（MLSE）均衡器装置包括响应于输入数据进行处理以产生前馈电路输出的前馈电路，所述输入数据是通过无线传输发送的传输数据产生的， 根据本发明的实施例。 MLSE均衡器装置还包括响应于所述输入数据的反馈电路，用于对其进行处理以产生反馈电路输出。 MLSE均衡器装置还包括响应于所述前馈电路输出的均衡器训练模块和所述反馈电路输出，用于通过最小化所述前馈电路输出和所述反馈电路输出之间的差来训练所述MLSE均衡器装置，所述MLSE均衡器装置经过训练以产生 所述MLSE子接收机用于解码所述均衡数据以通过减轻由于所述传输数据的无线传输而导致的多径通信信道的影响来生成解码的发送数据。
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