METHOD OF CHANNEL ACCESS CONTROL IN WIRELESS LOCAL AREA NETWORKS
    14.
    发明申请
    METHOD OF CHANNEL ACCESS CONTROL IN WIRELESS LOCAL AREA NETWORKS 审中-公开
    无线局域网通道接入控制方法

    公开(公告)号:US20160174253A1

    公开(公告)日:2016-06-16

    申请号:US14903596

    申请日:2014-07-13

    Abstract: A method to improve the area throughput of dense wireless local area networks (WLAN) by channel access control is proposed. The method allows an access point to obtain information of a plurality of stations within the wireless network. The access point classifies the plurality of stations into at least one group of stations and assigns a group identification (ID) according to the obtained information. The group ID and channel access control parameters are sent to the stations that are classified into the certain group. The stations in each of the group use the received channel access control parameters to communicate with the access point.

    Abstract translation: 提出了一种通过信道访问控制来提高密集无线局域网(WLAN)面积吞吐量的方法。 该方法允许接入点获得无线网络内的多个站的信息。 接入点将多个站分类为至少一组站,并根据获得的信息分配组标识(ID)。 组ID和通道访问控制参数被发送到分类到特定组的站。 每个组中的站使用接收到的信道访问控制参数与接入点进行通信。

    Method and apparatus for calibration for beamforming of multi-input-multi-output (MIMO) orthogonol frequency division multiplexing (OFDM) transceivers
    15.
    发明授权
    Method and apparatus for calibration for beamforming of multi-input-multi-output (MIMO) orthogonol frequency division multiplexing (OFDM) transceivers 有权
    用于多输入多输出(MIMO)正交频分复用(OFDM)收发器的波束成形的校准方法和装置

    公开(公告)号:US07986755B2

    公开(公告)日:2011-07-26

    申请号:US11840897

    申请日:2007-08-17

    Abstract: An embodiment of the present invention includes a calibration system employed in a multi-input-multi-output (MIMO) system for beamforming and receiving a plurality of streams. The system includes a first calibration circuit responsive to inphase (I) and quadrature (Q) pairs of stream and operative to calibrate each I and Q pair and a second calibration circuit responsive to the calibrated I and Q pairs for all streams, wherein the first and second calibration circuits perform calibration in the time domain.

    Abstract translation: 本发明的实施例包括用于波束成形和接收多个流的多输入多输出(MIMO)系统中的校准系统。 该系统包括响应于同相(I)和正交(Q)对流并且可操作地校准每个I和Q对的第一校准电路,以及响应于所有流的经校准的I和Q对的第二校准电路,其中第一 并且第二校准电路在时域中执行校准。

    METHOD AND APPARATUS FOR ADAPTIVE REDUCED OVERHEAD TRANSMIT BEAMFORMING FOR WIRELESS COMMUNICATION SYSTEMS
    16.
    发明申请
    METHOD AND APPARATUS FOR ADAPTIVE REDUCED OVERHEAD TRANSMIT BEAMFORMING FOR WIRELESS COMMUNICATION SYSTEMS 有权
    适用于无线通信系统的自适应减少传输波束的方法和装置

    公开(公告)号:US20090046768A1

    公开(公告)日:2009-02-19

    申请号:US11949706

    申请日:2007-12-03

    CPC classification number: H04B7/0413

    Abstract: 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.

    Abstract translation: 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。

    Method and Apparatus for Beamforming of Multi-Input-Multi-Output (MIMO) Orthogonol Frequency Division Multiplexing (OFDM) Transceivers
    17.
    发明申请
    Method and Apparatus for Beamforming of Multi-Input-Multi-Output (MIMO) Orthogonol Frequency Division Multiplexing (OFDM) Transceivers 有权
    用于多输入多输出(MIMO)正交波分复用(OFDM)收发器波束成形的方法和装置

    公开(公告)号:US20090046003A1

    公开(公告)日:2009-02-19

    申请号:US11840891

    申请日:2007-08-17

    CPC classification number: H04B17/0085 H04B7/0413 H04B7/0617 H04B17/21

    Abstract: An embodiment of the present invention includes a calibration system employed in a multi-input-multi-output (MIMO) system for beamforming and receiving a plurality of streams. The system includes a first calibration circuit responsive to inphase (I) and quadrature (Q) pairs of stream and operative to calibrate each I and Q pair and a second calibration circuit responsive to the calibrated I and Q pairs for all streams, wherein the first and second calibration circuits perform calibration in the time domain.

    Abstract translation: 本发明的实施例包括用于波束成形和接收多个流的多输入多输出(MIMO)系统中的校准系统。 该系统包括响应于同相(I)和正交(Q)对流并且可操作地校准每个I和Q对的第一校准电路,以及响应于所有流的经校准的I和Q对的第二校准电路,其中第一 并且第二校准电路在时域中执行校准。

    Joint time/frequency domain maximum ratio combining architectures for multi input multi output wireless receivers
    18.
    发明授权
    Joint time/frequency domain maximum ratio combining architectures for multi input multi output wireless receivers 有权
    多输入多输出无线接收器的联合时间/频域最大比组合架构

    公开(公告)号:US07486751B1

    公开(公告)日:2009-02-03

    申请号:US11048075

    申请日:2005-01-31

    Abstract: A multi input multi output (MIMO) receiver for receiving signals having a synchronization (SYNC) module being responsive to a plurality of received baseband signals for processing the same to generate maximum ratio combining (MRC) parameters, complementary code keying (CCK) modulated signals and orthogonal frequency division multiplexing (OFDM) modulated signals, said SYNC module for using said MRC parameters to process said OFDM modulated signals to generate a plurality of aligned OFDM signals in time domain, said MIMO receiver for processing said plurality of aligned OFDM signals to generate a plurality of subcarriers, in accordance with an embodiment of the present invention. The MIMO receiver further including a time domain CCK MRC module being responsive to said MRC parameters for processing said CCK modulated signals in time domain to generate aligned signals, said aligned signals being combined to generate an adjusted signal for demodulation. The MIMO receiver further including a frequency domain OFDM MRC module being responsive to said plurality of said subcarriers for combining the same in the frequency domain to generate an equalized response for demodulation, wherein said MIMO receiver for processing said CCK modulated signals in the time domain and said OFDM modulated signals in the frequency domain to improve the reception of said plurality of received baseband signals.

    Abstract translation: 一种多输入多输出(MIMO)接收机,用于接收具有同步(SYNC)模块的信号,该同步(SYNC)模块响应于多个接收的基带信号进行处理,以产生最大比率组合(MRC)参数,互补码键控(CCK)调制信号 和正交频分复用(OFDM)调制信号,所述SYNC模块用于使用所述MRC参数来处理所述OFDM调制信号以在时域中产生多个对准的OFDM信号,所述MIMO接收机用于处理所述多个对准的OFDM信号以产生 多个子载波,根据本发明的实施例。 所述MIMO接收机还包括响应于所述MRC参数的时域CCK MRC模块,用于在时域中处理所述CCK调制信号以生成对准的信号,所述对准的信号被组合以产生用于解调的经调整的信号。 MIMO接收机还包括响应于所述多个所述子载波的频域OFDM MRC模块,用于在频域中组合它们以产生用于解调的均衡响应,其中所述MIMO接收机用于在时域中处理所述CCK调制信号,以及 所述OFDM调制信号在频域中以改善所述多个接收的基带信号的接收。

    Efficient subcarrier equalization to enhance receiver performance
    19.
    发明授权
    Efficient subcarrier equalization to enhance receiver performance 有权
    高效的副载波均衡以增强接收机性能

    公开(公告)号:US07369626B1

    公开(公告)日:2008-05-06

    申请号:US10782351

    申请日:2004-02-18

    Abstract: A modem system for receiving and transmitting signals having a frequency domain equalizer (FEQ) block being responsive to a frequency channel response for processing the same to generate one or more initial FEQ coefficients (FEQ1), the modem system is responsive to an input signal for processing the same to generate frequency channel response, the input signal being generated from a transmitted signal, FEQ block using FEQ1 to generate an equalized Signal, modem system demodulating equalized Signal to generate a demodulated Signal symbol, in accordance with an embodiment of the present invention.

    Abstract translation: 一种调制解调器系统,用于接收和发送具有频域均衡器(FEQ)块的信号,所述频域均衡器(FEQ)块响应于频率响应来处理该频率响应以产生一个或多个初始FEQ系数(FEQ 1),所述调制解调器系统响应于输入信号 为了处理它以产生频道信号响应,根据传输信号产生的输入信号,使用FEQ1的FEQ块,以产生均衡的信号,调制解调器系统解调均衡信号以产生解调的信号符号,根据 本发明。

    Efficient method for multi-path resistant carrier and timing frequency offset detection
    20.
    发明授权
    Efficient method for multi-path resistant carrier and timing frequency offset detection 有权
    多路抗电荷载波和定时频偏检测的有效方法

    公开(公告)号:US07245677B1

    公开(公告)日:2007-07-17

    申请号:US10797299

    申请日:2004-03-09

    Abstract: A modem receiver for receiving signals having a frequency domain equalizer training module (FTM) being responsive to a frequency channel response for processing the same to generate one or more frequency domain equalizer (FEQ) coefficients, said modem receiver being responsive to an input signal for processing the same to generate said frequency channel response, said input signal being generated from transmission of a transmitted signal, said frequency channel response for including one or more pilot tones, said FEQ coefficients for including one or more pilot tone FEQ coefficients, in accordance with an embodiment of the present invention. The modem receiver further includes an offset weight determination (OWD) module being responsive to said pilot tone FEQ coefficients for processing the same to generate one or more carrier weights, said modem receiver for using said carrier weights to generate a carrier offset, said OWD module for using said pilot tone FEQ coefficients to generate one or more timing weights, said modem receiver for using said timing weights to generate a timing offset, said modem receiver for reducing the effects of faded pilot tones on determination of said timing offset and said carrier offset between said transmitted signal and said input signal.

    Abstract translation: 一种调制解调器接收机,用于接收具有频域均衡器训练模块(FTM)的信号,所述频域均衡器训练模块(FTM)响应于频道响应来处理该频域响应以产生一个或多个频域均衡器(FEQ)系数,所述调制解调器接收机响应于输入信号 对其进行处理以产生所述频道响应,所述输入信号是从发射信号的传输产生的,所述频道响应用于包括一个或多个导频音,所述FEQ系数用于包括一个或多个导频音FEQ系数,根据 本发明的一个实施例。 所述调制解调器接收机还包括偏移权重确定(OWD)模块,响应于所述导频音FEQ系数用于处理它们以产生一个或多个载波权重,所述调制解调器接收机用于使用所述载波权重来产生载波偏移量,所述OWD模块 用于使用所述导频音FEQ系数来产生一个或多个定时权重,所述调制解调器接收机用于使用所述定时权重来产生定时偏移量,所述调制解调器接收机用于在确定所述定时偏移和所述载波偏移时减少褪色导频音的影响 在所述发送信号和所述输入信号之间。

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