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公开(公告)号：US08270528B2
公开(公告)日：2012-09-18
申请号：US12800815
申请日：2010-05-21
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L7/042 , H04L25/0226 , H04L2027/003
摘要： Techniques are disclosed for detecting a packet. One technique includes sampling a received signal to produce a sequence of samples wherein the sequence of samples includes a plurality of subsequences of samples; cross correlating the subsequences of samples with a known form of the subsequence to produce cross correlations; self correlating the cross correlations to produce a plurality of self correlations; summing the self correlations; and processing the sum of the self correlations.
摘要翻译： 公开了用于检测分组的技术。 一种技术包括对接收到的信号进行采样以产生样本序列，其中样本序列包括多个样本的子序列; 将样本的子序列与已知形式的子序列交叉相关以产生互相关; 自相关互相关产生多个自相关; 求和自相关; 并处理自相关的总和。
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公开(公告)号：US07751520B1
公开(公告)日：2010-07-06
申请号：US10666723
申请日：2003-09-17
IPC分类号： H03D3/24
CPC分类号： H04L27/0014 , H04L7/042 , H04L25/0226 , H04L2027/003
摘要： Techniques are disclosed for detecting a packet. One technique includes sampling a received signal to produce a sequence of samples wherein the sequence of samples includes a plurality of subsequences of samples; cross correlating the subsequences of samples with a known form of the subsequence to produce cross correlations; self correlating the cross correlations to produce a plurality of self correlations; summing the self correlations; and processing the sum of the self correlations.
摘要翻译： 公开了用于检测分组的技术。 一种技术包括对接收到的信号进行采样以产生样本序列，其中样本序列包括多个样本的子序列; 将样本的子序列与已知形式的子序列交叉相关以产生互相关; 自相关互相关产生多个自相关; 求和自相关; 并处理自相关的总和。
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公开(公告)号：US20090311979A1
公开(公告)日：2009-12-17
申请号：US12172375
申请日：2008-07-14
申请人： Paul J. Husted , William W. Si , David J. Weber , Xiaoru Zhang
发明人： Paul J. Husted , William W. Si , David J. Weber , Xiaoru Zhang
IPC分类号： H04B1/02
CPC分类号： H03C5/00 , H04B2001/0491
摘要： A modulation system comprising a signal processing unit and a modulator. The signal processing unit may generate a low frequency modulator signal, a high frequency modulator signal, and a modulator amplitude control signal. The modulator may generate a modulated signal for transmission via a wireless network based, at least in part, on the low frequency modulator signal, the high frequency modulator signal, and the modulator amplitude control signal. The signal processing unit comprises a delay compensation unit for delaying the generation of the high frequency modulator signal and the modulator amplitude control signal based, at least in part, on signal generation and modulation path delays associated with the low frequency modulator signal to substantially align the modulator signals at the output of the modulation system.
摘要翻译： 一种包括信号处理单元和调制器的调制系统。 信号处理单元可以生成低频调制器信号，高频调制器信号和调制器幅度控制信号。 该调制器可以至少部分地基于低频调制器信号，高频调制器信号和调制器幅度控制信号，经由无线网络生成用于传输的调制信号。 信号处理单元包括延迟补偿单元，用于至少部分地基于与低频调制器信号相关联的信号产生和调制路径延迟来延迟高频调制器信号和调制器幅度控制信号的产生，以基本对准 调制器信号在调制系统的输出端。
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公开(公告)号：US20090311972A1
公开(公告)日：2009-12-17
申请号：US12172374
申请日：2008-07-14
申请人： Paul J. Husted , Soner Ozgur , Xiaoru Zhang
发明人： Paul J. Husted , Soner Ozgur , Xiaoru Zhang
CPC分类号： H03C5/00 , H04B2001/0491
摘要： A transceiver including a transmit modulator and a receiver. The modulator may accept a channel selection input, a first modulation input, a second modulation input, and an amplitude input. During transmit time slots, the modulator may generate a modulated output having a carrier frequency selected by the channel selection input. The carrier frequency may be frequency modulated by the first modulation inputs, phase modulated by the second modulation input, and amplitude modulated by the amplitude input. During receive time slots, the modulator may generate a carrier frequency selected by the channel selection input and offset by the first modulation input. The modulator may alternate between providing modulated transmit signals during transmit time slots and providing a local oscillator for the receiver during receive time slots.
摘要翻译： 包括发射调制器和接收机的收发器。 调制器可以接受信道选择输入，第一调制输入，第二调制输入和幅度输入。 在发送时隙期间，调制器可以生成具有由频道选择输入选择的载波频率的调制输出。 载波频率可以由第一调制输入进行频率调制，由第二调制输入进行相位调制，并由振幅输入进行幅度调制。 在接收时隙期间，调制器可以产生由信道选择输入选择的载波频率，并由第一调制输入偏移。 调制器可以在发送时隙期间在提供调制的发送信号之间交替，并且在接收时隙期间为接收机提供本地振荡器。
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公开(公告)号：US20080123761A1
公开(公告)日：2008-05-29
申请号：US11952040
申请日：2007-12-06
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
IPC分类号： H04L27/28
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译： 马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术通过取消或忽略杂散来工作。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。 信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。
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公开(公告)号：US07321631B1
公开(公告)日：2008-01-22
申请号：US11461347
申请日：2006-07-31
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译： 马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术通过取消或忽略杂散来工作。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。 信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。
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公开(公告)号：US07129884B1
公开(公告)日：2006-10-31
申请号：US10884785
申请日：2004-07-01
摘要： A radar detection technique in a WLAN device can include a short pulse detection technique and a long pulse detection technique that can be performed using multiple receive chains. Short pulse detection is particularly effective when the incoming signal includes one or a limited number of main pulses and some residual pulses. In contrast, long pulse detection is particularly effective when the incoming signal is longer, thereby allowing various characteristics of the incoming signal to be accurately measured.
摘要翻译： WLAN设备中的雷达检测技术可以包括可以使用多个接收链执行的短脉冲检测技术和长脉冲检测技术。 当输入信号包括一个或有限数量的主脉冲和一些残留脉冲时，短脉冲检测特别有效。 相比之下，当输入信号较长时，长脉冲检测特别有效，从而允许准确地测量输入信号的各种特性。
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公开(公告)号：US08184754B1
公开(公告)日：2012-05-22
申请号：US13081452
申请日：2011-04-06
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
IPC分类号： H04B1/00
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译： 马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术通过取消或忽略杂散来工作。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。 信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。
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公开(公告)号：US07835456B2
公开(公告)日：2010-11-16
申请号：US11952040
申请日：2007-12-06
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
IPC分类号： H04L27/28
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译： 马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术通过取消或忽略杂散来工作。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。 信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。
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公开(公告)号：US20050059366A1
公开(公告)日：2005-03-17
申请号：US10664792
申请日：2003-09-16
申请人： Won-Joon Choi , Jeffrey Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译： 马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。 可以使用各种技术来减轻杂散对接收信号的影响。 一般来说，这些技术通过取消或忽略杂散来工作。 例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。 维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。 信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。 使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。
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