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    52.
    发明专利
    未知

    公开(公告)号：AT240611T

    公开(公告)日：2003-05-15

    申请号：AT97931346

    申请日：1997-06-24

    Applicant: INTERDIGITAL TECH CORP

    Inventor： REGIS ROBERT T

    IPC: G06F17/10 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7093 ,  H04B7/216

    Abstract: The present invention provides a multichannel digital filter for filtering a plurality of signals transmitted via a plurality of channels in a code division multiple access (CDMA) communication system, the multichannel digital filter comprising: a plurality of filter inputs, one for each of the plurality of channels; a filter output for generating a single filter output for the plurality of filter inputs from the plurality of channels; a plurality of look-up tables (LUTs), each LUT comprising a plurality of memory addresses, for storing respective ones of precomputed weighted sums for all possible combinations of the plurality of filter inputs, whereby each LUT outputs a weighted sum of the plurality of filter inputs in accordance with the filter inputs from the plurality of channels; and a plurality of registers and a plurality of adders alternately arranged in series, whereby each adder adds outputs of the LUT and the value stored in each register in each operation cycle and each register buffers the output of each adder temporarily until the next operation cycle.

    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY
    58.
    发明专利
    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY 未知

    公开(公告)号：HK1033620A1

    公开(公告)日：2001-09-07

    申请号：HK01103835

    申请日：2001-06-04

    Applicant: INTERDIGITAL TECH CORP

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

    IPC: H04B7/26 ,  H04W88/08 ,  H04B ,  H04Q

    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.

    Modular base station with variable communication capacity
    59.
    发明专利
    Modular base station with variable communication capacity 未知

    公开(公告)号：AU3356199A

    公开(公告)日：1999-10-11

    申请号：AU3356199

    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.

    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY
    60.
    发明专利
    MODULAR BASE STATION WITH VARIABLE COMMUNICATION CAPACITY 未知

    公开(公告)号：CA2324083A1

    公开(公告)日：1999-09-23

    申请号：CA2324083

    申请日：1999-03-17

    Applicant: INTERDIGITAL TECH CORP

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

    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 omnidirectional 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.

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