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公开(公告)号：US20100330940A1
公开(公告)日：2010-12-30
申请号：US12875735
申请日：2010-09-03
CPC分类号： H04B7/0608 , H01Q1/242 , H01Q3/24 , H01Q21/28 , H04B7/0805 , H04B7/0834 , H04B7/0848 , H04B7/086 , H04B7/0874 , H04B7/10
摘要： An apparatus and method are disclosed for achieving receiver diversity. A wireless unit includes a plurality of antennas, an antenna selector to select one or more antennas from the plurality of antennas, a processor with input data from an inertial sensor for monitoring the orientation of the wireless unit. Based on the input data, the processor commands the antenna selector to select one or more antennas. In some embodiments, the processor is a diversity processor. Based on the input data from the inertial sensor, the diversity processor computes the combination of the received signals. In another aspect, the wireless unit further includes a baseband processor to process the output of the diversity processor for a particular unit application.
摘要翻译： 公开了一种用于实现接收机分集的装置和方法。 无线单元包括多个天线，天线选择器，用于从多个天线中选择一个或多个天线;处理器，具有来自惯性传感器的输入数据，用于监视无线单元的方向。 基于输入数据，处理器命令天线选择器选择一个或多个天线。 在一些实施例中，处理器是分集处理器。 基于来自惯性传感器的输入数据，分集处理器计算接收信号的组合。 在另一方面，无线单元还包括用于处理特定单元应用的分集处理器的输出的基带处理器。
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公开(公告)号：US20100099375A1
公开(公告)日：2010-04-22
申请号：US12254769
申请日：2008-10-20
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
摘要： The subject matter disclosed herein relates to a receiver that is capable of processing signals which are transmitted according to one or more wireless communication protocols. Such a receiver may have sufficient resources to obtain acquisition information from a signal transmitted according to at least one of the wireless communication protocols during an acquisition period and for the purpose of obtaining an estimate of a location of the receiver.
摘要翻译： 本文公开的主题涉及能够处理根据一个或多个无线通信协议发送的信号的接收机。 这样的接收机可以具有足够的资源，以便在采集周期期间根据至少一个无线通信协议发送的信号获得获取信息，并且为了获得接收机的位置的估计的目的。
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公开(公告)号：US07580672B2
公开(公告)日：2009-08-25
申请号：US10637950
申请日：2003-08-07
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H04B7/15
CPC分类号： H04B7/155 , G01S2013/466 , H04B7/0671 , H04B7/10
摘要： A communication repeater for use in conjunction with a base transceiver subsystem (BTS) of a wireless communication system. The repeater expands the coverage area of the BTS and allows receivers to identify whether the source of a communication signal was directly from a BTS or was broadcast by a repeater. Identification of the signal source facilitates position determination, particularly in hybrid position determination systems. The repeater implements differential delay modulation of the transmitted signal. The repeater re-transmits the original BTS signal as well as a time delayed version of the signal. Additionally, the repeater introduces synthetic path diversity in the form of spatial diversity or polarity diversity to de-correlate the re-transmitted original signal from the time delayed signal. The repeater can broadcast the delayed signal with the same power as the re-transmitted original signal or can attenuate the delayed signal relative to the re-transmitted original signal.
摘要翻译： 一种与无线通信系统的基站收发器子系统（BTS）一起使用的通信中继器。 中继器扩展BTS的覆盖区域，并允许接收机识别通信信号的来源是直接来自BTS还是由中继器广播。 信号源的识别有助于位置确定，特别是在混合位置确定系统中。 中继器实现发射信号的差分延迟调制。 中继器重新发送原始BTS信号以及信号的时间延迟版本。 另外，中继器以空间分集或极性分集的形式引入合成路径分集，以将来自时间延迟信号的重传的原始信号去相关。 中继器可以以与重新发送的原始信号相同的功率来广播延迟的信号，或者可以相对于再发送的原始信号衰减延迟的信号。
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64.发明授权Method and apparatus for demodulating signals processed in a transmit diversity mode 有权用于解调以发射分集模式处理的信号的方法和装置公开(公告)号：US07184463B2
公开(公告)日：2007-02-27
申请号：US10651446
申请日：2003-08-28
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译： 用于在无线通信系统中处理接收信号的解调器架构。 解调器包括耦合到组合器的多个相关器。 每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。 每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。 使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。 组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。 可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。 在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。
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公开(公告)号：US06788663B2
公开(公告)日：2004-09-07
申请号：US10138704
申请日：2002-05-03
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H04B7216
CPC分类号： G01S19/05 , G01S19/07 , G01S19/256 , G01S19/41
摘要： A method of wireless communications according to one embodiment of the invention includes obtaining a first time base (e.g. obtaining a code phase) from a signal received from a ground transmitter (e.g. a CDMA base station). A predetermined offset based on at least a propagation delay of the received signal is applied to the first time base to obtain a second time base. For example, the second time base may be aligned to a time base of a positioning satellite system (e.g. the NAVSTAR GPS). A timing signal is generated that has a code phase based on the second time base.
摘要翻译： 根据本发明的一个实施例的无线通信的方法包括从从地面发射机（例如CDMA基站）接收的信号中获得第一时基（例如，获得码相位）。 基于至少接收信号的传播延迟的预定偏移被施加到第一时基以获得第二时基。 例如，第二时基可以对准定位卫星系统（例如，NAVSTAR GPS）的时基。 产生具有基于第二时基的码相位的定时信号。
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公开(公告)号：US06628702B1
公开(公告)日：2003-09-30
申请号：US09594466
申请日：2000-06-14
IPC分类号： H04B1500
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
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公开(公告)号：US06378099B1
公开(公告)日：2002-04-23
申请号：US09239561
申请日：1999-01-29
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H03M116
CPC分类号： H04L1/1829 , H04L1/1845
摘要： The present invention is a novel and improved method and apparatus for performing frame identification. In accordance with one embodiment of the invention, a received frame of data is processed by generating estimates of the received frame, measuring a correlation between said estimates and stored estimates of a previously improperly received frame, processing the received frame as a retransmitted frame when said correlation is greater than a first threshold, processing the received frame as a new frame when said correlation is less than a second threshold, wherein said second threshold is less than or equal to said first threshold.
摘要翻译： 本发明是用于执行帧识别的新颖且改进的方法和装置。 根据本发明的一个实施例，通过产生所接收的帧的估计来对接收的数据帧进行处理，测量所述估计与先前不正确接收的帧的存储的估计之间的相关性，当所述帧 相关性大于第一阈值，当所述相关性小于第二阈值时，将接收到的帧处理为新帧，其中所述第二阈值小于或等于所述第一阈值。
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