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公开(公告)号：US08223871B1
公开(公告)日：2012-07-17
申请号：US12059846
申请日：2008-03-31
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
摘要： A rake receiver having a plurality of rake fingers is adapted based on a plurality of received signals. The plurality of received signals correspond to a single signal transmitted by a single antenna transceiver and received by a multiple antenna transceiver that includes the rake receiver. Each of a plurality of groups of rake fingers corresponds to a single-input, multiple output (SIMO) channel estimate. One coefficient from each of the plurality of SIMO channel estimates is selected, and a transmit steering vector is calculated based on the selected coefficients. The transmit steering vector is applied to a signal to be transmitted by the multiple antenna transceiver to the single antenna transceiver.
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公开(公告)号：US08126098B2
公开(公告)日：2012-02-28
申请号：US11853421
申请日：2007-09-11
申请人： Zhiyu Yang , Hongyuan Zhang
发明人： Zhiyu Yang , Hongyuan Zhang
IPC分类号： H04B1/10
CPC分类号： H04B1/712 , H04B1/1081 , H04B1/7115 , H04B1/7117 , H04B7/0845 , H04W84/12
摘要： A wireless receiver includes M antennas that each receive a wireless signal. N rake receiver modules receive the wireless signals from the M antennas and combine multipath components of the wireless signals. A summing module receives outputs of the N rake receiver modules and combines the outputs to generate an output signal. M and N are integers greater than 1.
摘要翻译： 无线接收机包括每个接收无线信号的M个天线。 N个接收机模块从M个天线接收无线信号，并组合无线信号的多径分量。 求和模块接收N个接收机模块的输出，并组合输出以产生输出信号。 M和N是大于1的整数。
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公开(公告)号：US08254514B1
公开(公告)日：2012-08-28
申请号：US11951725
申请日：2007-12-06
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
IPC分类号： H04L7/04
CPC分类号： H04B1/7085 , H03M1/0836 , H03M1/1245 , H04B1/7113 , H04L7/042
摘要： An early-late gate based ADC timing approach is described for performing early-late gate timing recovery despite the presence of multipath signal distortion. Multipath conditions may severely distort Barker correlator magnitudes generated for taps within two taps of a determined bit synchronization time. Exemplary embodiments of the described approach may combine Barker correlator magnitudes for several receive chains to calculate the timing error correction corresponding to a difference of early and late taps. The approach may be used to increase the size and stability of Barker correlator magnitudes generated for taps far away from a determined bit synchronization time. Such embodiments allow early-late differences to be generated using combined Barker correlator magnitudes generated at taps that are two or more chips from a determined bit synchronization time, thereby avoiding multipath distortion that may distort Barker correlator magnitudes generated within two or more chips from the determined bit synchronization time.
摘要翻译： 描述了一种基于早期门的ADC定时方法，用于执行早期门限定时恢复，尽管存在多径信号失真。 多路径条件可能严重扭曲在确定的位同步时间的两个抽头之内为抽头产生的Barker相关器幅度。 所描述的方法的示例性实施例可以组合几个接收链的巴克相关器幅度，以计算对应于早期和晚期抽头的差异的定时误差校正。 该方法可以用于增加远离确定的位同步时间的抽头产生的巴克相关器幅度的大小和稳定性。 这样的实施例允许使用在来自确定的位同步时间的两个或更多个芯片的抽头处产生的组合巴克相关器幅值来产生早期差异，从而避免可能使来自所确定的两个或更多个芯片内产生的Barker相关器幅度失真的多径失真 位同步时间。
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公开(公告)号：US08224272B1
公开(公告)日：2012-07-17
申请号：US11999482
申请日：2007-12-05
申请人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
发明人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
CPC分类号： H04L27/0012 , H04B7/082 , H04L23/02 , H04L25/0262 , H04L27/2071
摘要： A wireless networking receiver with digital antenna switching selects an antenna with an 802.11b signal based on a signal metric, such as the highest signal quality or highest peak amplitude. In one embodiment, the receiver comprises a plurality of antennas that may each receive one of a plurality of RF signals conforming to the IEEE 802.11b standard. The receiver may have multiple antennas for use with the IEEE 802.11n standard, but may receive signals conforming to the 802.11b standard. The receiver also comprises a carrier sense circuit configured to calculate a signal metric for each of the signals and further configured to generate a selection signal signifying one of the signals, based on the signal metric. The receiver further comprises a multiplexer configured to output one of the signals, based on the selection signal. In another embodiment, a wireless networking receiver comprises signal receiving means, carrier sensing means for calculating and selecting a signal based on a signal metric, and multiplexer means to output the signal. A related method is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.
摘要翻译： 具有数字天线切换的无线网络接收机基于诸如最高信号质量或最高峰值幅度的信号度量来选择具有802.11b信号的天线。 在一个实施例中，接收机包括可以各自接收符合IEEE 802.11b标准的多个RF信号中的一个的多个天线。 接收机可以具有用于IEEE 802.11n标准的多个天线，但是可以接收符合802.11b标准的信号。 接收机还包括被配置为计算每个信号的信号度量的载波侦听电路，并进一步被配置为基于信号度量产生表示信号之一的选择信号。 接收机还包括多路复用器，配置为基于选择信号输出信号之一。 在另一个实施例中，无线联网接收机包括信号接收装置，用于基于信号度量计算和选择信号的载波检测装置，以及用于输出信号的多路复用装置。 还公开了相关方法。 提供了其它实施例，并且本文所述的每个实施例可以单独使用或彼此组合使用。
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公开(公告)号：US07899110B1
公开(公告)日：2011-03-01
申请号：US11957245
申请日：2007-12-14
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
CPC分类号： H04B1/7073 , H04B7/0865
摘要： A receiver with multiple antennas, such as an 802.11b receiver may generate a magnitude signal for each antenna and add the results to determine a peak signal point in a received frame to provide a bit synchronization signal to a rake receiver component. The receiver may include one or more threshold switches that only pass individual or combined magnitude signals when the magnitude signals are above a certain level. The received frame may be dividing into segments using a switching circuit and registers. A comparator may then evaluate the registers to determine the segment with the highest magnitude signal. In one embodiment, values for adjacent segments may be added to a current segment when determining the segment with the highest magnitude signal.
摘要翻译： 具有多个天线的接收机（例如802.11b接收机）可以为每个天线生成幅度信号，并且添加结果以确定接收帧中的峰值信号点，以向耙式接收机组件提供比特同步信号。 接收机可以包括一个或多个阈值开关，其在幅度信号高于某一水平时仅通过单个或组合的幅度信号。 接收到的帧可以使用切换电路分成多个段并进行寄存。 然后，比较器可以评估寄存器以确定具有最高幅度信号的段。 在一个实施例中，当确定具有最高幅度信号的段时，相邻段的值可被添加到当前段。
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公开(公告)号：US08483634B1
公开(公告)日：2013-07-09
申请号：US13549887
申请日：2012-07-16
申请人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
发明人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
CPC分类号： H04L27/0012 , H04B7/082 , H04L23/02 , H04L25/0262 , H04L27/2071
摘要： A wireless networking receiver with digital antenna switching selects an antenna with an 802.11b signal based on a signal metric, such as the highest signal quality or highest peak amplitude. In one embodiment, the receiver comprises a plurality of antennas that may each receive one of a plurality of RF signals conforming to the IEEE 802.11b standard. The receiver may have multiple antennas for use with the IEEE 802.11n standard, but may receive signals conforming to the 802.11b standard. The receiver also comprises a carrier sense circuit configured to calculate a signal metric for each of the signals and further configured to generate a selection signal signifying one of the signals, based on the signal metric. The receiver further comprises a multiplexer configured to output one of the signals, based on the selection signal.
摘要翻译： 具有数字天线切换的无线网络接收机基于诸如最高信号质量或最高峰值幅度的信号度量来选择具有802.11b信号的天线。 在一个实施例中，接收机包括可以各自接收符合IEEE 802.11b标准的多个RF信号中的一个的多个天线。 接收机可以具有用于IEEE 802.11n标准的多个天线，但是可以接收符合802.11b标准的信号。 接收机还包括被配置为计算每个信号的信号度量的载波侦听电路，并进一步被配置为基于信号度量产生表示信号之一的选择信号。 接收机还包括多路复用器，配置为基于选择信号输出信号之一。
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公开(公告)号：US08477893B2
公开(公告)日：2013-07-02
申请号：US13406105
申请日：2012-02-27
申请人： Zhiyu Yang , Hongyuan Zhang
发明人： Zhiyu Yang , Hongyuan Zhang
IPC分类号： H04B1/10
CPC分类号： H04B1/712 , H04B1/1081 , H04B1/7115 , H04B1/7117 , H04B7/0845 , H04W84/12
摘要： A receiver includes a select module, an enable module, and a receiver module. The select module is configured to detect (i) a number of antennas in the receiver, or (ii) a number of enabled receiver paths in the receiver. The select module is also configured to generate a receiver select signal and an adjustment signal based on (i) the number of antennas detected, or (ii) the number of enabled receiver paths detected. The enable module is configured to, based on the receiver select signal, (i) determine that at least one of the enabled receiver paths is an unnecessary receiver path, and (ii) disable the at least one of the enabled receiver paths. The receiver module is configured to, based on the adjustment signal, adjust a bandwidth of the receiver or coefficient values of the receiver.
摘要翻译： 接收机包括选择模块，使能模块和接收机模块。 选择模块被配置为检测（i）接收机中的多个天线，或者（ii）接收机中的多个使能的接收机路径。 选择模块还被配置为基于（i）检测到的天线的数量或（ii）检测到的使能的接收机路径的数量来生成接收机选择信号和调整信号。 使能模块被配置为基于接收机选择信号，（i）确定至少一个使能的接收机路径是不必要的接收机路径，以及（ii）禁用所启用的接收机路径中的至少一个。 接收器模块被配置为基于调整信号调整接收机的带宽或接收机的系数值。
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公开(公告)号：US08565335B1
公开(公告)日：2013-10-22
申请号：US13615544
申请日：2012-09-13
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
CPC分类号： H04B1/707 , H04B7/0617 , H04B7/086
摘要： Based on a plurality of signals received via a plurality of single-input, multiple-output (SIMO) channels, a plurality of sets of rake coefficients in a multiple-antenna transceiver are adapted. Each signal of the plurality of signals corresponds to a single signal transmitted by a single-antenna transceiver, and each set of the adapted sets of rake coefficients corresponds to an estimate of a respective one of the plurality of SIMO channels. According to at least one selection criterion, one coefficient from each set of the plurality of sets of rake coefficients is selected. A transmit steering vector is generated based on the selected coefficients, and the transmit steering vector is applied to a signal to be transmitted by the multiple-antenna transceiver to the single-antenna transceiver.
摘要翻译： 基于经由多个单输入多输出（SIMO）信道接收的多个信号，适配多天线收发器中的多组耙式系数。 多个信号中的每个信号对应于由单天线收发信机发送的单个信号，并且适应的耙参数集合的每一组对应于多个SIMO信道中的相应一个信道的估计。 根据至少一个选择标准，选择来自多组耙子系数的每一组的一个系数。 基于所选择的系数生成发射导向矢量，并将发射导向矢量应用于由多天线收发信机发送到单天线收发信机的信号。
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公开(公告)号：US08374273B1
公开(公告)日：2013-02-12
申请号：US12059846
申请日：2008-03-31
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
CPC分类号： H04B1/707 , H04B7/0617 , H04B7/086
摘要： A rake receiver having a plurality of rake fingers is adapted based on a plurality of received signals. The plurality of received signals correspond to a single signal transmitted by a single antenna transceiver and received by a multiple antenna transceiver that includes the rake receiver. Each of a plurality of groups of rake fingers corresponds to a single-input, multiple output (SIMO) channel estimate. One coefficient from each of the plurality of SIMO channel estimates is selected, and a transmit steering vector is calculated based on the selected coefficients. The transmit steering vector is applied to a signal to be transmitted by the multiple antenna transceiver to the single antenna transceiver.
摘要翻译： 具有多个耙指的耙式接收器基于多个接收信号而被适配。 多个接收信号对应于由单个天线收发器发射并由包括耙式接收机的多天线收发器接收的单个信号。 多组耙指中的每一组对应于单输入多输出（SIMO）信道估计。 选择来自多个SIMO信道估计中的每一个的一个系数，并且基于所选择的系数来计算发射导向矢量。 将发射导向矢量应用于由多天线收发信机发射到单天线收发信机的信号。
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公开(公告)号：US08369387B1
公开(公告)日：2013-02-05
申请号：US13031867
申请日：2011-02-22
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
CPC分类号： H04B1/7073 , H04B7/0865
摘要： A receiver with multiple antennas, such as an 802.11b receiver may generate a magnitude signal for each antenna and add the results to determine a peak signal point in a received frame to provide a bit synchronization signal to a rake receiver component. The receiver may include one or more threshold switches that only pass individual or combined magnitude signals when the magnitude signals are above a certain level. The received frame may be dividing into segments using a switching circuit and registers. A comparator may then evaluate the registers to determine the segment with the highest magnitude signal. In one embodiment, values for adjacent segments may be added to a current segment when determining the segment with the highest magnitude signal.
摘要翻译： 具有多个天线的接收机（例如802.11b接收机）可以为每个天线生成幅度信号，并且添加结果以确定接收帧中的峰值信号点，以向耙式接收机组件提供比特同步信号。 接收机可以包括一个或多个阈值开关，其在幅度信号高于某一水平时仅通过单个或组合的幅度信号。 接收到的帧可以使用切换电路分成多个段并进行寄存。 然后，比较器可以评估寄存器以确定具有最高幅度信号的段。 在一个实施例中，当确定具有最高幅度信号的段时，相邻段的值可被添加到当前段。
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