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    METHOD AND SYSTEM FOR REDUCING TRANSMITTER OVERLOADING IN TRANSMISSION SCANNING RECEIVER
    2.
    发明专利
    METHOD AND SYSTEM FOR REDUCING TRANSMITTER OVERLOADING IN TRANSMISSION SCANNING RECEIVER 失效

    公开(公告)号：JP2000013311A

    公开(公告)日：2000-01-14

    申请号：JP13231099

    申请日：1999-05-13

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： PAGANO CARMINE JAMES ,  RUCKI JOHN STANLEY ,  WEN JACK CHI-CHIEH ,  ZAPPALA CHRISTOPHER F

    IPC: H04B1/40 ,  H04B1/00 ,  H04B1/10 ,  H04B1/12 ,  H04B1/38 ,  H04B1/50 ,  H04B7/00 ,  H04B7/005 ,  H04B7/155 ,  H04B7/26 ,  H04Q7/30

    Abstract: PROBLEM TO BE SOLVED: To reduce transmitter overloading in a transmission scanning receiver by decreasing a transmitter signal that is sent from an overloaded transmitter and received by the transmission scanning receiver. SOLUTION: A part of a transmitter signal obtained from a transmission path 12 and sent on a coupling path 11 is adjusted, injected to a transmission scanning path 16 of a transmission scanning receiver 17, sent from a transmitter 26 and synthesized with the transmitter signal received by the transmission scanning receiver 17. A delay element 24 on the coupling path 11 is sent from the transmitter 26 and used to adjust a delay in the coupling path 11 so as to correspond to a delay of the transmitter signal received by the transmission scanning receiver 17. An amplitude and phase adjustment device 34 on the coupling path 11 adjusts the amplitude and the phase of the transmitter signal on the coupling path 11 to reduce the transmitter signal on the transmission scanning path 16. The measurement of the transmitter signal on the transmission scanning path is used to adjust the phase/amplitude of the signal on the coupling path 11 and to reduce a signal level.

    5.
    发明专利
    未知

    公开(公告)号：BR9902539A

    公开(公告)日：2000-03-14

    申请号：BR9902539

    申请日：1999-07-06

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ALLPRESS ALAN STEPHEN ,  ARUNACHALAM SRIDHAR ,  MARDANI REZA ,  PAGANO CARMINE JAMES ,  SHAN TIEJAN ,  TARALLO JOSEPH ANTHONY

    IPC: H04B1/26 ,  H04B1/40 ,  H04B7/204 ,  H04B7/24 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30

    Abstract: A technique for receiving and transmitting wireless telecommunications through use of a generic architecture is disclosed. The present invention mitigates the complexity of different transceiver operations by allowing a generic architecture to be used in a variety of situations with different channels and different telecommunications standards. An illustrative embodiment of the present invention comprises: receiving uplink analog RF signals at a base station; converting the uplink analog wide-band RF signals into IF uplink digital signals at an analog-to-digital converter; converting the IF uplink digital signals into a number of uplink channels; and demodulating selected narrow-band uplink channels from the total number of narrow-band uplink channels.

    Method and apparatus to reduce transmitter overload of a transmit scanning eceiver
    6.
    发明专利
    Method and apparatus to reduce transmitter overload of a transmit scanning eceiver 未知

    公开(公告)号：AU2804799A

    公开(公告)日：1999-11-25

    申请号：AU2804799

    申请日：1999-05-10

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： PAGANO CARMINE JAMES ,  ZAPPALA CHRISTOPHER F ,  WEN JACK CHI-CHIEH ,  RUCKI JOHN STANLEY

    IPC: H04B1/40 ,  H04B1/00 ,  H04B1/10 ,  H04B1/12 ,  H04B1/38 ,  H04B1/50 ,  H04B7/00 ,  H04B7/005 ,  H04B7/155 ,  H04B7/26 ,  H04Q7/30

    Abstract: A communication system reduces the transmitter (13) overloading a transmit scanning receiver (17) by reducing transmitter signals transmitted from an overloading transmitter and received by the transmit scanning receiver. A sample of a transmitter signal to be transmitted is obtained (in 10a) from the transmitter before transmission. After the transmitter signal is transmitted and received by the transmit scanning receiver, the sample is used to reduce the transmitter signal at the transmit scanning receiver. To do so, the sample is delayed (24), adjusted (34) and combined (36) with the transmitter signal. In certain embodiments, a portion of a transmitter signal is obtained from a transmit path of a transmitter prior to transmission and put on a coupled path. The transmitter signal on the coupled path is adjusted and injected into a transmit scanning path of the transmit scanning receiver to combine with a transmitter signal which was transmitted by the transmitter and received at the transmit scanning receiver. A delay element in the coupled path is used to adjust the delay on the coupled path to correspond to the delay experienced by the transmitter signal which was transmitted by the transmitter and then received by the transmit scanning receiver. Amplitude and phase adjusters on the coupled path amplitude and phase adjust the transmitter signal on the coupled path to reduce the transmitter signal on the transmit scanning path. To improve the reduction of the transmitter signal on the transmit scanning path, measurements of at least the transmitter signal on the transmit scanning path can be made, and the measurements can be used to adjust the phase and/or amplitude of the transmitter signals on the coupled path to reduce the level of the transmitter signal on the transmit scanning path. Furthermore, successive cancellation stages (10n) comprising parallel coupled paths can be implemented to provide more suppression of the transmitter signal on the transmit scanning path.

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