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公开(公告)号：WO02075349A3
公开(公告)日：2003-02-27
申请号：PCT/US0207695
申请日：2002-03-15
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED
CPC classification number: G01S19/05 , G01S19/256
Abstract: A system and method for providing timing information to a wireless device in a position determination system is disclosed. A wireless device includes a reference signal receiver, a signal processor, a wireless communications transceiver and a GPS receiver. The wireless device is adapted to receive a reference signal, extract a snippet of the received reference signal, determine a time o reception for he snippet and transmit the snippet and time of reception to a position determination entity as part of a request for GPS aiding information. The position determination entity includes a timing source, a GPS memory for storing GPS satellite information, a reference signal memory, a communications interface, a signal processor and a control processor. The position determination entity is adapted to continually receive and store a reference signal along with an associated time of reception, and receive the snippet and timestamp transmitted from the wireless device. The position determination entity is further adapted to match the signal snippet to a portion of the stored reference signal, determine a time offset between the timestamp and the time of reception of the matched portion of the stored reference signal, prepare aiding information for the wireless device, synchronize the aiding information to the wireless device using the time offset, and transmit the synchronized aiding information to the wireless device. The wireless device is further adapted to receive the aiding information, including timing information to assist the wireless device in acquiring the GPS signal.
Abstract translation: 公开了一种用于在位置确定系统中向无线设备提供定时信息的系统和方法。 无线设备包括参考信号接收器，信号处理器，无线通信收发器和GPS接收器。 无线设备适于接收参考信号，提取接收到的参考信号的片段，确定其片段的接收时间，并将该片断和接收时间发送到位置确定实体，作为GPS辅助信息请求的一部分 。 位置确定实体包括定时源，用于存储GPS卫星信息的GPS存储器，参考信号存储器，通信接口，信号处理器和控制处理器。 位置确定实体适于连续地接收和存储参考信号连同相关联的接收时间，并且接收从无线设备发送的片段和时间戳。 位置确定实体还适于将信号片段与存储的参考信号的一部分相匹配，确定所存储的参考信号的匹配部分的时间戳和接收时间之间的时间偏移，为无线装置准备辅助信息 使用时间偏移将辅助信息同步到无线设备，并将同步的辅助信息发送到无线设备。 无线设备还适于接收辅助信息，包括定时信息以帮助无线设备获取GPS信号。
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52.发明申请
公开(公告)号：WO0213411A3
公开(公告)日：2003-02-06
申请号：PCT/US0124848
申请日：2001-08-07
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED
CPC classification number: H04B7/2681 , H04B7/2693
Abstract: A method and apparatus for calibrating a Base Station and Mobile Station for use in systems that use round trip delay and systems that do not use round trip delay.
Abstract translation: 一种用于校准基站和移动台以用于使用往返延迟的系统以及不使用往返延迟的系统的方法和装置。
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公开(公告)号：WO0167621A3
公开(公告)日：2002-05-02
申请号：PCT/US0106740
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN JIAN
CPC classification number: H03G3/3042 , H03F2203/7239 , H03G1/0088
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
Abstract translation: 用于具有比传统发射机架构更好的性能的通信系统的发射机架构。 这些改进包括以下组合：控制信号的响应时间更快，线性度更好，干扰减少，功耗降低，电路复杂度降低，成本降低。 对于蜂窝应用，这些改进可以导致系统容量增加，电话尺寸更小，通话和待机时间增加，以及对产品的更多接受。 提供电路以加快控制信号的响应时间。 发送信号路径中的各种元件的控制回路被集成。 增益控制机制允许精确调整输出发射功率电平。 提供控制机制以在不需要时将功率放大器或全部发射信号路径断电。 控制发射信号路径中的各种元件的增益以减少输出发射功率的瞬变，并且还确保瞬变向下。
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54.发明申请
公开(公告)号：WO0167591A3
公开(公告)日：2002-03-07
申请号：PCT/US0106803
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS
CPC classification number: H03F3/24 , H03F2200/331 , H03G3/3036 , H03M3/374 , H03M3/50 , H03M7/3031
Abstract: An interface circuit for converting a digital signal to an analog signal. The interface circuit includes a time response adjustment circuit, a modulator, and a filter. The time response adjustment circuit receives the digital signal and generates an adjusted signal. The modulator couples to the time response adjustment circuit, receives the adjusted signal, and generates a modulator signal. The filter couples to the modulator, receives the modulator signal, and generates the analog signal. The analog signal has a time response that is modified by the time response adjustment circuit. In an embodiment, the time response adjustment circuit includes a gain element, a delay element, and a summer. The gain element receives and scales the digital signal by a scaling factor. The delay element receives and delays the digital signal by a time delay. The summer couples to the gain element and the delay element, sums the scaled signal from the gain element and the delayed signal from the delay element to generate the adjusted signal.
Abstract translation: 一种用于将数字信号转换为模拟信号的接口电路。 接口电路包括时间响应调整电路，调制器和滤波器。 时间响应调整电路接收数字信号并产生调整信号。 调制器耦合到时间响应调整电路，接收经调整的信号，并产生调制器信号。 滤波器耦合到调制器，接收调制器信号，并产生模拟信号。 模拟信号具有由时间响应调整电路修改的时间响应。 在一个实施例中，时间响应调整电路包括增益元件，延迟元件和加法器。 增益元件以缩放因子接收和缩放数字信号。 延迟元件接收并延迟数字信号延时。 加法器与增益元件和延迟元件耦合，将来自增益元件的定标信号和来自延迟元件的延迟信号相加，以产生调整后的信号。
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