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公开(公告)号：US09083448B2
公开(公告)日：2015-07-14
申请号：US12063655
申请日：2007-10-26
申请人： Zhanfeng Jia , David Jonathan Julian , Amal Ekbal
发明人： Zhanfeng Jia , David Jonathan Julian , Amal Ekbal
IPC分类号： H04J3/06 , H04B1/7183 , H04B1/7075
CPC分类号： H04B1/7183 , H04B1/7075
摘要： An apparatus and method for wireless communications configured to receive simultaneous transmissions from a plurality of wireless devices, with each of the transmissions having a reference signal, acquire the reference signals and, based on information obtained from the acquisition of the reference signals, select the transmission from one of the wireless devices for timing synchronization and decoding.
摘要翻译： 一种用于无线通信的设备和方法，被配置为从多个无线设备接收同时传输，其中每个传输具有参考信号，获取参考信号，并且基于从获取参考信号获得的信息，选择传输 从无线设备之一进行定时同步和解码。
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公开(公告)号：US20100045508A1
公开(公告)日：2010-02-25
申请号：US12402420
申请日：2009-03-11
申请人： Amal Ekbal , David Jonathan Julian , Zhanfeng Jia
发明人： Amal Ekbal , David Jonathan Julian , Zhanfeng Jia
IPC分类号： G01S13/08
CPC分类号： G01S13/765
摘要： Relatively short turnaround times are provided in conjunction with two-way ranging to, for example, facilitate accurate ranging measurements when the relative clock drift between ranging nodes (e.g., devices) is relatively high. In some aspects, relatively short turnaround times are achieved through the use of a symmetric channel that is defined to enable concurrent transmission of ranging messages between nodes. For example, a symmetric channel may be established by configuring the nodes to receive one or more pulses associated with a received ranging message in between pulse transmissions associated with a transmitted ranging message. In this way, one node may send a ranging timestamp shortly after the other nodes sends its ranging timestamp, thereby mitigating the impact of the clock drift on the ranging measurements. In some aspects the pulses may comprise ultra-wideband pulses. The techniques described herein may be employed to provide two-way ranging in, for example, low power and/or non-coherent wireless devices.
摘要翻译： 结合双向测距提供相对短的周转时间，例如，当测距节点（例如，设备）之间的相对时钟漂移相对较高时，便于进行准确的测距测量。 在一些方面，通过使用被定义为能够在节点之间并行传送测距消息的对称信道来实现相对短的周转时间。 例如，可以通过将节点配置为在与传送的测距消息相关联的脉冲传输之间接收与接收到的测距消息相关联的一个或多个脉冲来建立对称信道。 以这种方式，一个节点可以在其他节点发送其测距时间戳之后不久发送测距时间戳，从而减轻时钟漂移对测距测量的影响。 在一些方面，脉冲可以包括超宽带脉冲。 本文描述的技术可以用于在例如低功率和/或非相干无线设备中提供双向测距。
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公开(公告)号：US08698572B2
公开(公告)日：2014-04-15
申请号：US12967216
申请日：2010-12-14
申请人： Chong U. Lee , David Jonathan Julian , Amal Ekbal
发明人： Chong U. Lee , David Jonathan Julian , Amal Ekbal
CPC分类号： H03K5/131 , H03K2005/00104 , H03K2005/00156
摘要： A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple times so that the cumulative delay of the signal through the delay line (e.g., as indicated by a count) may be calculated over a period of time. The count is compared with an expected count and, based on this comparison, the delay of the delay line is adjusted as necessary. In some aspects the signal may comprise a digital signal. In some aspects a delay through a delay line may be calculated based on analysis of amplitude changes in a signal caused by a phase shift imparted on the signal by the delay line. In some aspects a delay line is incorporated into a transmitted reference system to generate and/or process transmitted reference signals.
摘要翻译： 校准可调延迟线以将延迟线的延迟保持在期望值或期望的值范围内。 在一些方面，信号通过延迟线多次，使得通过延迟线的信号的累积延迟（例如，由计数指示）可以在一段时间内被计算。 将计数与期望计数进行比较，并根据该比较，根据需要调整延迟线的延迟。 在一些方面，信号可以包括数字信号。 在一些方面，通过延迟线的延迟可以基于由由延迟线对信号施加的相移引起的信号中的幅度变化的分析来计算。 在一些方面，将延迟线并入到传输的参考系中以产生和/或处理传输的参考信号。
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公开(公告)号：US08385474B2
公开(公告)日：2013-02-26
申请号：US11859723
申请日：2007-09-21
申请人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
发明人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
IPC分类号： H04L27/00
摘要： Frequency of an oscillating signal is temporarily adjusted to adjust frequency and/or phase of an output signal. For example, the frequency of the oscillating signal may be adjusted for a very short period of time to adjust the phase of the output signal. In addition, the frequency of the oscillating signal may be temporarily adjusted in a repeated manner to adjust the effective frequency of the output signal. In some aspects the frequency of the oscillating signal is adjusted by reconfiguration of reactive circuits associated with an oscillator circuit.
摘要翻译： 暂时调整振荡信号的频率，调整输出信号的频率和/或相位。 例如，可以在非常短的时间段内调整振荡信号的频率以调整输出信号的相位。 此外，可以以重复的方式暂时调整振荡信号的频率以调节输出信号的有效频率。 在一些方面，振荡信号的频率通过与振荡器电路相关联的无功电路的重新配置来调节。
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公开(公告)号：US07965805B2
公开(公告)日：2011-06-21
申请号：US11859354
申请日：2007-09-21
申请人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
发明人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
IPC分类号： H04L7/00
摘要： Frequency and phase of an output signal is adjusted to track an input signal. A control signal is adjusted to control a frequency of an oscillating signal from which the output signal is derived. In some aspects the frequency of the oscillating signal is adjusted by reconfiguration of reactive circuits coupled to an oscillator circuit. Phase of the output signal may be adjusted based on comparison of the oscillating signal with an adjustable threshold. For example, the adjustable threshold may comprise an adjustable bias signal for a transistor circuit whereby the oscillating signal is provided as an input to the transistor circuit and the output of the transistor circuit provides the output signal.
摘要翻译： 调整输出信号的频率和相位以跟踪输入信号。 调整控制信号以控制从其导出输出信号的振荡信号的频率。 在一些方面，振荡信号的频率通过耦合到振荡器电路的无功电路的重新配置来调整。 可以基于振荡信号与可调阈值的比较来调整输出信号的相位。 例如，可调阈值可以包括用于晶体管电路的可调偏置信号，由此将振荡信号提供给晶体管电路的输入，并且晶体管电路的输出提供输出信号。
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公开(公告)号：US20090251208A1
公开(公告)日：2009-10-08
申请号：US12099686
申请日：2008-04-08
CPC分类号： H04L25/4902 , H04B1/71637 , H04B14/026
摘要： An apparatus and method for communications is disclosed. The apparatus includes a slicer configured to generate samples of a signal carrying information, and a demodulator having a digital integrator configured to integrate the samples, the demodulator being further configured to recover from the integrated samples data representative of the information carried by the signal.
摘要翻译： 公开了一种用于通信的装置和方法。 该装置包括：被配置为产生携带信息的信号的采样的限幅器，以及具有被配置为对采样进行积分的数字积分器的解调器，所述解调器还被配置为从所述积分样本中恢复表示由所述信号携带的信息的数据。
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公开(公告)号：US20090080568A1
公开(公告)日：2009-03-26
申请号：US11859335
申请日：2007-09-21
申请人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
发明人： Chong U. Lee , David Jonathan Julian , Amal Ekbal , Pavel Monat , Wei Xiong
IPC分类号： H03K7/06
CPC分类号： H03K7/06 , H03B5/366 , H03B2200/005
摘要： Phase of an output signal is based on comparison of an oscillating signal with an adjustable threshold. Here, adjustment of the threshold results in a corresponding adjustment of the phase of the output signal. For example, the adjustable threshold may comprise an adjustable bias signal for a transistor circuit whereby the oscillating signal is provided as an input to the transistor circuit and the output of the transistor circuit provides the output signal. In some aspects these phase adjustment techniques may be employed to provide one or more tunable multiphase clocks.
摘要翻译： 输出信号的相位基于振荡信号与可调阈值的比较。 这里，阈值的调整导致输出信号的相位的相应调整。 例如，可调阈值可以包括用于晶体管电路的可调偏置信号，由此将振荡信号提供给晶体管电路的输入，并且晶体管电路的输出提供输出信号。 在一些方面，可以采用这些相位调整技术来提供一个或多个可调多相时钟。
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公开(公告)号：US20080116941A1
公开(公告)日：2008-05-22
申请号：US11560780
申请日：2006-11-16
申请人： Amal Ekbal , Chong U. Lee , David Jonathan Julian , Wei Xiong
发明人： Amal Ekbal , Chong U. Lee , David Jonathan Julian , Wei Xiong
CPC分类号： H04B1/7183
摘要： A matched filter and peak detector identify peaks of a received signal. The peak detector may detect peaks during a fixed or adjustable time window. The peaks may be used as a preliminary decision (e.g., soft decision) for subsequent receiver decoding operations. The detector may be used to detect high bandwidth signals such as ultra-wide band signal pulses yet consume relatively minimal power.
摘要翻译： 匹配滤波器和峰值检测器识别接收信号的峰值。 峰值检测器可以在固定或可调整的时间窗口期间检测峰值。 峰可以用作随后的接收机解码操作的初步判定（例如，软判决）。 检测器可用于检测高带宽信号，例如超宽带信号脉冲，但消耗相对较小的功率。
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公开(公告)号：US20080111653A1
公开(公告)日：2008-05-15
申请号：US11560313
申请日：2006-11-15
申请人： Chong U. Lee , David Jonathan Julian , Amal Ekbal
发明人： Chong U. Lee , David Jonathan Julian , Amal Ekbal
IPC分类号： H03H2/00
CPC分类号： H03K5/131 , H03K2005/00104 , H03K2005/00156
摘要： A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple times so that the cumulative delay of the signal through the delay line (e.g., as indicated by a count) may be calculated over a period of time. The count is compared with an expected count and, based on this comparison, the delay of the delay line is adjusted as necessary. In some aspects the signal may comprise a digital signal. In some aspects a delay through a delay line may be calculated based on analysis of amplitude changes in a signal caused by a phase shift imparted on the signal by the delay line. In some aspects a delay line is incorporated into a transmitted reference system to generate and/or process transmitted reference signals.
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公开(公告)号：US07868689B2
公开(公告)日：2011-01-11
申请号：US12099686
申请日：2008-04-08
IPC分类号： H03K9/04
CPC分类号： H04L25/4902 , H04B1/71637 , H04B14/026
摘要： An apparatus and method for communications is disclosed. The apparatus includes a slicer configured to generate samples of a signal carrying information, and a demodulator having a digital integrator configured to integrate the samples, the demodulator being further configured to recover from the integrated samples data representative of the information carried by the signal.
摘要翻译： 公开了一种用于通信的装置和方法。 该装置包括：被配置为产生携带信息的信号的采样的限幅器，以及具有被配置为对采样进行积分的数字积分器的解调器，所述解调器还被配置为从所述积分样本中恢复表示由所述信号携带的信息的数据。
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