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    IMPROVED TIME TRACKING LOOP
    31.
    发明专利
    IMPROVED TIME TRACKING LOOP 未知

    公开(公告)号：CA2473610A1

    公开(公告)日：2003-07-31

    申请号：CA2473610

    申请日：2002-01-18

    Applicant: QUALCOMM INC

    Inventor： BLESSENT LUCA

    IPC: H04B1/707

    Abstract: A signal receiver uses overlapping sample accumulations in order to acquire and track a received spread spectrum signal with increased speed and accuracy. Sample accumulations are formed by grouping together a predetermined number of consecutive samples. Overlapping sample accumulations may then be created by overlapping a predetermined portion of adjacent sample accumulations. After the overlapping sample accumulations have been created they are transmitted to a timing discriminator in order to determine a timing error indicative of the difference between the timing of the received spread spectrum signal and the signal receiver timing. The timing discriminator compares early and late overlapping accumulation signals in order to determine an updated timing error. The receiver timing is thereafter adjusted according to the timing error. By overlapping the accumulations of samples, adjustments to the system timing may be made more rapidly than if disjoint samples are used.

    Pilot filtering in the presence of phase discontinuities in cdma receiver
    32.
    发明专利
    Pilot filtering in the presence of phase discontinuities in cdma receiver 未知

    公开(公告)号：AU2607500A

    公开(公告)日：2000-08-01

    申请号：AU2607500

    申请日：2000-01-11

    Applicant: QUALCOMM INC

    Inventor： AGRAWAL AVNEESH ,  BENDER PAUL E ,  BLESSENT LUCA ,  BUTLER BRIAN K ,  MOTIWALA QUAEED

    IPC: H04B1/707 ,  H04B7/26 ,  H04L7/00

    Abstract: Techniques for coherent demodulation in the presence of phase discontinuities is described. In the exemplary embodiment, times when phase discontinuities occur are known apriori by a receiver in which demodulation is being performed. In an alternate embodiment, the discontinuity location is signaled to the receiver in advance by the transmitter which generates the signals being demodulated. A pilot signal is prepared for optimal coherent demodulation by the use of two filters: one capable of withstanding the effects of phase discontinuity; a second providing superior filtering performance than the first so long as phase discontinuities are not present. Both filters are simultaneously operated. However, the superior performing filter is selected for use in demodulation whenever possible.

    IMPROVED TIME TRACKING LOOP
    35.
    发明专利
    IMPROVED TIME TRACKING LOOP 未知

    公开(公告)号：CA2473610C

    公开(公告)日：2010-11-23

    申请号：CA2473610

    申请日：2002-01-18

    Applicant: QUALCOMM INC

    Inventor： BLESSENT LUCA

    IPC: H04B1/707

    Abstract: A signal receiver uses overlapping sample accumulations in order to acquire and track a received spread spectrum signal with increased speed and accuracy. Sample accumulations are formed by grouping together a predetermined number of consecutive samples. Overlapping sample accumulations may then be created by overlapping a predetermined portion of adjacent sample accumulations. After the overlapping sample accumulations have been created they are transmitted to a timing discriminator in order to determine a timing error indicative of the difference between the timing of the received spread spectrum signal and the signal receiver timing. The timing discriminator compares early and late overlapping accumulation signals in order to determine an updated timing error. The receiver timing is thereafter adjusted according to the timing error. By overlapping the accumulations of samples, adjustments to the system timing may be made more rapidly than if disjoint samples are used.

    36.
    发明专利
    未知

    公开(公告)号：AT394891T

    公开(公告)日：2008-05-15

    申请号：AT04778166

    申请日：2004-07-12

    Applicant: QUALCOMM INC

    Inventor： CHEN TAO ,  ACHOUR BAAZIZ ,  BUTLER BRIAN ,  TIEDEMANN EDWARD ,  ZHANG HAITAO ,  SAINTS KEITH ,  BLESSENT LUCA ,  WEI YONGBIN

    IPC: H04W72/14 ,  H04B7/005 ,  H04L12/18 ,  H04W4/06 ,  H04W52/08 ,  H04W52/32 ,  H04W52/54

    Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

    METODO Y SISTEMA PARA MEDIR UNA RELACION TERMICA CARACTERISTICA EN UNA RED DE COMUNICACION.
    37.
    发明专利
    METODO Y SISTEMA PARA MEDIR UNA RELACION TERMICA CARACTERISTICA EN UNA RED DE COMUNICACION. 未知

    公开(公告)号：MX2007002484A

    公开(公告)日：2007-05-11

    申请号：MX2007002484

    申请日：2005-08-31

    Applicant: QUALCOMM INC

    Inventor： ABRISHAMKAR FARROKH ,  BLESSENT LUCA ,  CHEN JIANGXIN

    IPC: H04B3/14 ,  H04W24/02 ,  H04W52/34

    Abstract: Un sistema para medir una relacion termica (RoT) caracteristica en una red de comunicacion incluye controlar una estacion de transmision para mantener su potencia de transmision a un nivel sustancialmente constante durante un primer intervalo de tiempo, y medir un primer nivel de potencia recibido. La estacion transmisora es entonces controlada para ajustar su potencia de transmision en una cantidad seleccionable durante un segundo intervalo de tiempo, y se mide un segundo nivel de potencia recibido. El primer y segundo niveles de potencia recibidos son entonces procesados para determinar la RoT caracteristica.

    38.
    发明专利
    未知

    公开(公告)号：BRPI0407767A

    公开(公告)日：2006-04-18

    申请号：BRPI0407767

    申请日：2004-02-24

    Applicant: QUALCOMM INC

    Inventor： SIMIC EMILIJA M ,  PATRICK CHRISTOPHER ,  ROWITCH DOUGLAS ,  BLESSENT LUCA ,  RICK ROLAND

    IPC: G01S1/00 ,  G01S5/02 ,  G01S5/10 ,  G01S5/14 ,  G01S19/06 ,  G01S19/25 ,  H04B7/26 ,  H04W64/00 ,  H04Q7/38

    Abstract: A forward link repeater delay watermarking (FLRDWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link signal with a (unique or non-unique) time delay modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the time delay watermark on the forward link signal to determine repeater information that aids the network position determination entity or mobile station position location system in determining position location using AFLT and/or A-GPS systems. A forward link time delay watermarking system can be implemented to achieve low impact on FL and AFLT performance, favorable detection and identification probabilities, and short time-to-detect/identify.

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