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163 records (took 0.026 seconds)

    91.
    发明专利
    未知

    公开(公告)号：DE1041728T1

    公开(公告)日：2001-06-07

    申请号：DE00114940

    申请日：1995-12-22

    Applicant: INTERDIGITAL TECH CORP

    Inventor： LOMP GARY R

    IPC: G06F17/10 ,  H03G3/30 ,  H04B20060101 ,  H04B1/04 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04J13/16 ,  H04W52/22 ,  H04W52/36 ,  H04W52/52 ,  H04W84/00

    Abstract: The present invention discloses a communication station for communicating with a second station in a cellular-communication network using spread spectrum modulation wherein the second station transmits power commands to the communication station based on a received power level from the communication station, the communication station comprising: a transmitter having an adjustable transmitter power level for transmitting spread-spectrum signals; means for sequentially receiving power commands from a second station with which communication is being conducted; means for comparing a sequence of at least two of the received power commands to determine if the received commands in the sequence match; and means for adjusting the transmitter power level at a same rate as the reception of the power commands; wherein if the command sequence matches the transmitter power level is adjusted by a different amount than if the command sequence does not match. A method for adjusting a transmitter power level is also disclosed.

    92.
    发明专利
    未知

    公开(公告)号：ES2154620T1

    公开(公告)日：2001-04-16

    申请号：ES00114939

    申请日：1995-12-22

    Applicant: INTERDIGITAL TECH CORP

    Inventor： LOMP GARY R

    IPC: G06F17/10 ,  H03G3/30 ,  H04B20060101 ,  H04B1/04 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04J13/16 ,  H04W52/22 ,  H04W52/36 ,  H04W52/52 ,  H04W84/00

    Abstract: The present invention discloses a communication station for communicating with a second station in a cellular-communication network using spread spectrum modulation wherein the second station transmits power commands to the communication station based on a received power level from the communication station, the communication station comprising: a transmitter having an adjustable transmitter power level for transmitting spread-spectrum signals; means for sequentially receiving power commands from a second station with which communication is being conducted; means for comparing a sequence of at least two of the received power commands to determine if the received commands in the sequence match; and means for adjusting the transmitter power level at a same rate as the reception of the power commands; wherein if the command sequence matches the transmitter power level is adjusted by a different amount than if the command sequence does not match. A method for adjusting a transmitter power level is also disclosed.

    Communication station with multiple antennas
    93.
    发明专利
    Communication station with multiple antennas 未知

    公开(公告)号：AU7595198A

    公开(公告)日：1999-05-24

    申请号：AU7595198

    申请日：1998-05-26

    Applicant: INTERDIGITAL TECH CORP

    Inventor： LOMP GARY R ,  KAZERKEVICH LEONID ,  POLAN JEFFREY S ,  MESECHER DAVID K

    IPC: H04B1/06 ,  H04B7/005 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00 ,  H04W52/52

    Abstract: A communication station includes an antenna system having multiple antennas and delay units for receiving a transmitted signal and outputting a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by a modem, which compensates for the known distortion in a manner which provides improved signal gain. The improved signal gain permits a reduction in transmit power and, accordingly, increased capacity of the communication station. Where the antenna system is to be remotely located from related signal processing equipment, separate units for the RF receiver/transmitter and the other signal processing equipment are provided so that the RF receiver/transmitter may also be remotely located along with the antenna system.

    COMMUNICATION STATION WITH MULTIPLE ANTENNAS
    94.
    发明专利
    COMMUNICATION STATION WITH MULTIPLE ANTENNAS 未知

    公开(公告)号：CA2273029A1

    公开(公告)日：1999-05-14

    申请号：CA2273029

    申请日：1998-05-26

    Applicant: INTERDIGITAL TECH CORP

    Inventor： MESECHER DAVID K ,  POLAN JEFFREY S ,  KAZAKEVICH LEONID ,  LOMP GARY R

    IPC: H04B1/06 ,  H04B7/005 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00 ,  H04W52/52

    Abstract: The present invention relates to communications for communication systems. The communication includes an antenna system which is coupled to an RF receiver/transmitter which in turn is coupled to other signal processing equipment including at least one modem for processing individual CDMA communications. Preferably the antenna system includes multiple antennas and delay units and outputs a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by the modem. The modem compensates for the known distortion in a manner which provides improved signal gain. The improved signal gain permits a reduction in transmit power and, accordingly, increased capacity of the CDMA system. Where the antenna system is to be remotely located from the signal processing equipment, separate units for the RF receiver/transmitter and the other signal processing equipment are provided so that the RF receiver/transmitter may also be remotely located along with the antenna system. Preferably a connecting cable of at least 20 feet is provided which supplies RF signals and DC power to the RF receiver/transmitter from the other signal processing equipment.

    METHOD AND SUBSCRIBER UNIT FOR PERFORMING AN ACCESS PROCEDURE
    98.
    发明专利
    METHOD AND SUBSCRIBER UNIT FOR PERFORMING AN ACCESS PROCEDURE 未知

    公开(公告)号：CA2676866C

    公开(公告)日：2013-08-13

    申请号：CA2676866

    申请日：1997-06-23

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M ,  LOMP GARY R

    IPC: H04W52/10 ,  H04B1/707 ,  H04B7/216 ,  H04J13/16 ,  H04L7/00 ,  H04W52/36 ,  H04W52/50 ,  H04W52/60 ,  H04W74/08

    Abstract: A communication method for use with a code division multiple access (CDMA) subscriber unit is disclosed. The method includes generating a first code wherein the first code has a first length and generating a second code wherein the second code has a second length greater than the first length and a period which is aligned with the length of the first code. A first radio frequency signal is transmitted from an antenna of the CDMA subscriber unit wherein the first radio frequency signal carries the first code at a first power level, at least a portion of the second code, and data. In an absence of an acknowledgement signal received by the CDMA subscriber unit, a power level of the first code is set to a second power level wherein the second power level is greater than the first power level.

    Unidad de abonado y método para controlar la potencia de transmisión durante el establecimiento de un canal en un sistema de comunicación de AMDC
    100.
    发明专利
    Unidad de abonado y método para controlar la potencia de transmisión durante el establecimiento de un canal en un sistema de comunicación de AMDC 未知

    公开(公告)号：ES2386279T3

    公开(公告)日：2012-08-16

    申请号：ES07009969

    申请日：1997-06-23

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH ,  LOMP GARY R ,  HAIM JOHN W

    IPC: H04W52/50 ,  H04B1/707 ,  H04B7/216 ,  H04J13/16 ,  H04L7/00 ,  H04W52/36 ,  H04W52/60

    Abstract: Unidad de abonado (16) para controlar la potencia de transmisión durante el establecimiento de un canal en unsistema de comunicación de acceso múltiple por división de código (10) utilizando la transmisión de un códigocorto, que tiene un periodo mucho más corto que un código de expansión convencional, se actualizaperiódicamente y no lleva datos, durante el aumento de potencia inicial para limitar la superación de potencia y lasinteñerencias y permitir la sincronización rápida con una estación base (14), la unidad de abonado comprendiendo:medios (90; 158) para transmitir el código corto a una estación base (14) a un nivel de potencia de transmisión quees menor que un nivel de potencia requerido para la detección por la estación base; medios (160) para aumentarrápidamente dicha potencia de transmisión y transmitir repetidamente el código corto hasta que el código corto esdetectado por la estación base, y medios (176) para dejar de aumentar la potencia de transmisión del código cortoal recibir una indicación de la estación base.

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