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    53.
    发明专利
    未知

    公开(公告)号：AT212488T

    公开(公告)日：2002-02-15

    申请号：AT99914923

    申请日：1999-03-17

    Applicant: INTERDIGITAL TECH CORP

    Inventor： POLAN JEFFREY ,  DICK STEPHEN G ,  KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  REGIS ROBERT T ,  TURNER RICHARD

    IPC: H04B7/26 ,  H04W88/08 ,  H04Q7/36

    Abstract: The present invention provides a base station architecture that is modular in configuration, lowering the initial cost of implementing a new CDMA telecommunication system for a defined geographical region while allowing for future capacity. The scalable architecture is assembled from a digital base station unit that is configured to support a plurality of simultaneous wireless calls connecting to a conventional public switched telephone network. For initial startup, two base station units are deployed for redundancy in case of a single failure. Additional base station units may be added when the need arises for extra traffic capacity. If sectorization is required, the base station units may be directionally oriented. Coupled to and remote from each base station unit are two amplified antenna modules that contain an omni-directional or an external directional antenna, a high power RF amplifier for transmitted frequencies and a low noise amplifier for received frequencies. A separate power supply module capable of supporting two base station units provides continued service in the event of a mains power outage.

    54.
    发明专利
    未知

    公开(公告)号：NO20014538D0

    公开(公告)日：2001-09-18

    申请号：NO20014538

    申请日：2001-09-18

    Applicant: INTERDIGITAL TECH CORP

    Inventor： ZEIRA ARIELA ,  OZLUTURK FATIH M ,  SHIN SUNG-HYUK

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04J3/00 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/18 ,  H04W52/20 ,  H04W52/22 ,  H04W52/24 ,  H04W52/50 ,  H04W52/54

    Abstract: Outer loop/weighted open loop power control controls transmission power levels in a spread spectrum time division duplex communication station. A first communication station (110) transmits a communication to a second communication station including target adjustment information generated at the first station on the basis of measured error rates of communications from the second station to the first station. The second station receives the communication and measures its received power level. Based on in part the received communication's power level and the communication's transmission power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the second station to the first station is based on in part weighting the path loss estimate in response to the estimate's quality and based on the receive target adjusted by the target adjustment information transmitted from the first station.

    56.
    发明专利
    未知

    公开(公告)号：NO20011878D0

    公开(公告)日：2001-04-11

    申请号：NO20011878

    申请日：2001-04-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M

    IPC: H04B1/10 ,  H04B1/7097 ,  H04B1/7107 ,  H04B

    Abstract: An apparatus for code division multiple access (CDMA) wireless communication comprising a receiver configured to receive a CDMA signal that includes a desired traffic signal and a second signal, the desired traffic signal being spread with a desired traffic spreading code and the second signal being spread with a second spreading code; means for generating a second signal cancellation component including means for generating a second signal strength by despreading the CDMA signal based on the second spreading code; means for generating a second signal cancellation factor by selectively combining the second signal spreading code and the desired traffic spreading code; and means for combining the second signal strength and the second signal cancellation factor to generate the second signal cancellation component; means for generating a despread desired traffic signal by despreading the CDMA signal based on the desired traffic spreading code; and means for combining the despread desired traffic signal and the second signal cancellation component to cancel second signal noise from the despread desired traffic signal.

    ADAPTIVE RF AMPLIFIER PRELIMITER
    57.
    发明专利
    ADAPTIVE RF AMPLIFIER PRELIMITER 未知

    公开(公告)号：CA2382024A1

    公开(公告)日：2001-03-08

    申请号：CA2382024

    申请日：2000-08-23

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KIERNAN BRIAN ,  OZLUTURK FATIH M

    IPC: H03G3/20 ,  H03G11/04 ,  H04B1/04 ,  H04B1/707 ,  H04B7/005 ,  H04B7/216 ,  H04W52/22 ,  H04W52/34

    Abstract: The invention reduces transient peaks in signals transmitted in CDMA communication systems. A plurality of spread spectrum data signals are combined into a combined signal having fluctuating power level corresponding to the combination of the data signals. The combined signal is modulated to produce an RF signal for transmission. The average power of the combined signal is measured over a selected time period. The combined signal power level is adaptively limited to a calculated power level based at least in pa rt on the measured power.

    58.
    发明专利
    未知

    公开(公告)号：BR9910412A

    公开(公告)日：2001-01-09

    申请号：BR9910412

    申请日：1999-01-27

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M ,  MESECHER DAVID K ,  JACQUES ALEXANDER M

    IPC: H04L27/02 ,  H04B1/707 ,  H04B1/7073 ,  H04B1/7075 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7115

    Abstract: The present invention relates to a receiver for receiving at least one of a plurality of channels in a communication system, the receiver comprising: an adaptive matched filter (79) for receiving communication signals and producing a filtered signal by using a weighting signal; a rake receiver (101) for receiving communication signals and a pseudo-noise signal (931) generated for a selected channel and producing a filter weighting signal; means for defining the filter weighting signal with a correction signal (119), said correction signal to produce the weighting signal used by said adaptive matched filter; a channel despreader (85) for said selected channel coupled to said adaptive matched filter output for despreading said filtered signal using the pseudo-noise signal generated for said selected channel to produce a despread channel signal (95) of said selected channel; a pilot channel despreader (87) for a pilot channel coupled to said adaptive matched filter output for despreading said filtered signal using a pseudo-noise signal generated for said pilot channel to produce a despread pilot signal (135) of said pilot channel; a hard decision processor (121) in association with a complex conjugate processor (123) for receiving the despread channel signal of said selected channel and producing said correction signal; and means (157) for producing a phase correction signal (183) utilizing at least said despread pilot signal, said phase correction signal being applied to produce phase-corrected channel signals.

    59.
    发明专利
    未知

    公开(公告)号：DE966802T1

    公开(公告)日：2000-10-05

    申请号：DE98910006

    申请日：1998-02-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M

    IPC: H04B7/26 ,  H04B7/005 ,  H04B7/24

    Abstract: A system which dynamically adjusts the power of signals transmitted from a wireless base station over global channels to minimize spillover to other communication cells monitors the total transmit power of the base station and dynamically adjusts the global channel transmit power as a function of the total transmit power of the base station as measured at the base station.

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