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    32.
    发明专利
    未知

    公开(公告)号：ID27486A

    公开(公告)日：2001-04-12

    申请号：ID990695

    申请日：1997-12-19

    Applicant: QUALCOMM INC

    Inventor： ODENWALDER JOSEPH P ,  TIEDEMANN EDWARD G JR ,  ANTONIO FRANKLIN P ,  YU-CHEUN JOU

    IPC: H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04L20060101 ,  H04L1/00

    Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set (90) and a quadrature-phase channel set (92). The in-phase channel set (90) is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel (92) set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

    Method and apparatus for cross polarized isolation in a communication system
    34.
    发明专利
    Method and apparatus for cross polarized isolation in a communication system 未知

    公开(公告)号：AU2022400A

    公开(公告)日：2000-05-29

    申请号：AU2022400

    申请日：1999-11-09

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  SCHIFF LEONARD N ,  AMES WILLIAM G

    IPC: H04J11/00 ,  H04B7/06 ,  H04B7/10 ,  H04B7/185 ,  H04J3/00

    Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.

    Predistortion technique for high power amplifiers
    36.
    发明专利
    Predistortion technique for high power amplifiers 未知

    公开(公告)号：AU4718199A

    公开(公告)日：2000-01-17

    申请号：AU4718199

    申请日：1999-06-24

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  HAMDY WALID ,  KASTURI NITIN ,  RIDDLE CHRISTOPHER ,  OSES DAVID PUIG

    IPC: H03F1/32

    Abstract: A predistortion technique for high power amplifiers includes an adaptive predistortion algorithm that operates independently of data samples to write a set of complex gain values, or predistortion parameters, to a lookup table. The algorithm may be processor-driven. The gain values are taken from the lookup table and multiplied by a complex digital baseband waveform. The gain values may first be subjected to interpolation. The downconverted output of the amplifier is measured to gauge the efficacy of the predistortion. Based on the effect of the predistortion upon the ratio of in-band power to out-of-band power, decisions are made on the set of predistortion parameters for the next iteration of the algorithm. The algorithm runs continuously, perturbing parameters and adapting the predistortion functions accordingly in an effort to continually reflect instantaneous amplitude-modulation and phase-modulation relationships that may change over time with temperature variation or component aging.

    37.
    发明专利
    未知

    公开(公告)号：BR9610551A

    公开(公告)日：1999-12-21

    申请号：BR9610551

    申请日：1996-08-29

    Applicant: QUALCOMM INC

    Inventor： WEAVER LINDSAY A JR ,  ANTONIO FRANKLIN P ,  DEAN RICHARD F

    IPC: H04L5/16 ,  H04B7/005 ,  H04B7/15 ,  H04B7/26 ,  H04J3/08 ,  H04W16/26 ,  H04W52/40 ,  H04W52/46

    Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.

    CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM
    38.
    发明专利
    CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM 未知

    公开(公告)号：SK280276B6

    公开(公告)日：1999-10-08

    申请号：SK57193

    申请日：1991-12-06

    Applicant: QUALCOMM INC

    Inventor： GILHOUSEN KLEIN S ,  ANTONIO FRANKLIN P

    IPC: H04B7/26 ,  H01Q21/29 ,  H04B7/02 ,  H04B7/06 ,  H04B7/08 ,  H04J13/00 ,  H04L1/02 ,  H04W36/18 ,  H04W88/08

    Abstract: In a code division multiple access (CDMA) communication system in which system users communicate information signals with other system users through an antenna system using CDMA communication signals. The system comprises a base station (10) and said antenna system (26) for a wireless communication between individual users present in the area covered by the antenna system. A distributor (D) couples the base station (10) and antennas of the antenna system (26, 26'), said system having a plurality of antennas (28A, 28B,...28I) that are spaced apart so as to cover a desired communication spectrum with fields (40A, 40B,...40N) of available receiving and transmitting electromagnetic field intensity. Individual antennas (28A, 28B,...28I) are coupled on the communication signals distributor (D) to the base station (10) via delay means (30A, 30B,...30I) which provide to each of said antennas each delay being different from one another.

    Linear coverage area antenna system for a cdma communication system
    39.
    发明专利
    Linear coverage area antenna system for a cdma communication system 未知

    公开(公告)号：HK1010954A1

    公开(公告)日：1999-07-02

    申请号：HK98110018

    申请日：1998-08-19

    Applicant: QUALCOMM INC

    Inventor： DEAN RICHARD F ,  ANTONIO FRANKLIN P

    IPC: H04B20060101 ,  H04B5/00 ,  H01Q13/22 ,  H01Q21/29 ,  H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04J13/02 ,  H04W36/18 ,  H04W88/08

    Abstract: A linear coverage area antenna system for use within a CDMA communication system is disclosed herein. In a preferred implementation, two linear coverage area antenna structures (210', 212') are positioned in parallel and coupled to a base station (200'). Within the base station (200'), a transmitter (220') generates remote user directed spread spectrum signals, these signals being provided to the first and second linear coverage area antenna structures (210', 212') through an antenna interface. The antenna interface includes a time delay element (292) for introducing a predetermined time delay between components of the remote user directed spread spectrum signals transmitted by the first and second linear coverage area antenna structures (210', 212'), respectively. The base station (220') also further includes at least a first demodulation element (510A) for demodulating an aggregate spread spectrum signal comprised of a plurality of system user directed spread spectrum signals received by the first linear coverage area antenna structure (210') and a second demodulation element (515A) for demodulating a second aggregate spread spectrum signal comprised of a plurality of system user directed spread spectrum signals received by the second linear coverage area antenna structure (212').

    40.
    发明专利
    未知

    公开(公告)号：FI982221A

    公开(公告)日：1998-12-16

    申请号：FI982221

    申请日：1998-10-13

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  GILHOUSEN KLEIN S

    IPC: H04J3/00 ,  H04B1/04 ,  H04B7/26 ,  H04B15/00 ,  H04B15/02 ,  H04B

    Abstract: A system and method for reducing radio frequency interference arising in connection with pulsed transmission over time division multiplexed communication channels. In a first embodiment, a subscriber station is nominally assigned all of the slots of each frame of a first transmit channel. By transmitting RF energy substantially continuously, the subscriber station reduces interference arising from pulsed transmission. In a second embodiment, a subscriber station is nominally assigned one or more slots of each frame of a primary channel for conventional transmission of useful information, and is also instructed to continuously transmit RF energy over an auxiliary channel at times other than during the assigned primary channel slots. In this way, interference generated in the vicinity of the subscriber station is reduced due to the substantially continuous transmission of RF energy by the subscriber station. More than one subscriber station may simultaneously utilize the auxiliary channel during reduced interference mode operation.

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