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    62.
    发明专利
    未知

    公开(公告)号：NO20052886D0

    公开(公告)日：2005-06-14

    申请号：NO20052886

    申请日：2005-06-14

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  DEMIR ALPASLAN ,  OZLUTURK FAITH

    IPC: H04B7/005 ,  H04B7/08 ,  H04B

    Abstract: A wireless transmit/receive unit (WTRU) has multiple receivers with an interface to combine received signals to provide enhanced reception. A control unit selectively controls the powering of the receivers to limit power consumption based on selected parameters.

    65.
    发明专利
    未知

    公开(公告)号：NO20051933L

    公开(公告)日：2005-04-20

    申请号：NO20051933

    申请日：2005-04-20

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  CHITRAPU PRABHAKAR R ,  HUNKELER TERESA JOANNE ,  REDDY GAUTAM G ,  CHANDRA ARTY

    IPC: G01S5/00 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/02 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/04 ,  H04W88/06 ,  H04Q7/20

    Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on Quality of Service criteria.

    EXAMINER
    66.
    发明专利
    EXAMINER 未知

    公开(公告)号：CA2528455A1

    公开(公告)日：2005-01-06

    申请号：CA2528455

    申请日：2004-05-05

    Applicant: INTERDIGITAL TECH CORP

    Inventor： DEMIR ALPASLAN ,  HAQUE TANBIR ,  KAZAKEVICH LEONID

    IPC: H04L25/66 ,  H03G3/30 ,  H04B1/16 ,  H04L25/10

    Abstract: A communication system including an amplifier (105), a receiver (110), an analog to digital converter (ADC 115) and an insertion phase variation compensation module (120). The amplifier receives a communication signal (150). If the amplifier is enabled, the amplifier amplifies the communicatio n signal and outputs the amplified communication signal to the receiver. If th e amplifier is disabled, the amplifier passes the communication signal to the receiver without amplifying it. The receiver outputs an analog complex signa l to the ADC. The ADC outputs a digital complex signal to the insertion phase variation compensation module which counteracts the effects of a phase offse t intermittently introduced into the communication signal when the amplifier i s enabled or disabled.

    MULTI-MODE RADIO WITH INTERFERENCE CANCELLATION CIRCUIT
    67.
    发明专利
    MULTI-MODE RADIO WITH INTERFERENCE CANCELLATION CIRCUIT 未知

    公开(公告)号：CA2527146A1

    公开(公告)日：2004-12-29

    申请号：CA2527146

    申请日：2004-05-21

    Applicant: INTERDIGITAL TECH CORP

    Inventor： AXNESS TIMOTHY A ,  KAZAKEVICH LEONID

    IPC: H04Q7/32 ,  H04B1/00 ,  H04B1/10 ,  H04B1/44 ,  H04B1/713 ,  H04Q20060101 ,  H04Q7/38

    Abstract: A multi-mode wireless transmit/receive unit (WTRU) includes at least one antenna, first and second communication mode receivers and a first communication mode transmitter. The first and second receivers simultaneousl y receive signals from the antenna. The first transmitter generates and sends a first type of signal to the antenna while, at the same time, the second receiver receives a second type of signal from the antenna. In a preferred embodiment, the WTRU further includes a vector multiplier configured to redu ce or eliminate interference of signals received by the second receiver, the interference being caused by the first transmitter. The vector multiplier adjusts the phase and amplitude of noise (i.e., spurious in-band noise) measured by the second receiver. The WTRU may further include a second communication mode transmitter configured to generate and send a second type of signal to the antenna.

    68.
    发明专利
    未知

    公开(公告)号：NO20045558L

    公开(公告)日：2004-12-20

    申请号：NO20045558

    申请日：2004-12-20

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  YANG RUI

    IPC: H03M1/18 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H03G7/06 ,  H03M1/12 ,  H04B17/40 ,  H04B17/02

    Abstract: An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.

    POLARIZACION DINAMICA PARA AMPLIFICADORES DE POTENCIA DE RF.
    69.
    发明专利
    POLARIZACION DINAMICA PARA AMPLIFICADORES DE POTENCIA DE RF. 未知

    公开(公告)号：ES2220766T3

    公开(公告)日：2004-12-16

    申请号：ES01926458

    申请日：2001-03-28

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  CABROL PATRICK

    IPC: H03F3/24 ,  H03F1/02 ,  H03F1/06 ,  H03F1/30 ,  H03G3/30 ,  H04B7/005

    Abstract: Un sistema que comprende un amplificador de potencia de RF (12) que amplifica una señal de comunicaciones, que tiene una primera entrada de señal para recibir la señal de comunicaciones, una salida de señal y una entrada de polarización, el cual comprende: un detector (14) para recibir la mencionada señal de comunicaciones y eliminar componentes de modulación de la mencionada señal de comunicaciones para proporcionar una señal de salida del detector; una segunda entrada de señal (22) para proporcionar una señal TPC de control de potencia de transmisión; un convertidor (16), acoplado al mencionado detector y la mencionada segunda entrada de señal, siendo el mencionado convertidor para tratar la mencionadas señal TPC y la mencionada señal de salida del detector para generar una señal de corriente; y un circuito espejo de corriente (18) para recibir la mencionada señal de corriente y la realimentación desde la mencionada salida de la señal, y para comparar la mencionada señal de corriente conla mencionada realimentación, para producir una señal de polarización; por lo que la mencionada entrada de polarización recibe la mencionada señal de polarización y ajusta dinámicamente el punto de polarización del mencionado amplificador.

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