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    32.
    发明专利
    未知

    公开(公告)号：FI112746B

    公开(公告)日：2003-12-31

    申请号：FI953407

    申请日：1995-07-12

    Applicant: MOTOROLA INC

    Inventor： BRUCKERT EUGENE ,  SONNENTAG RICHARD

    IPC: H04J13/02 ,  H04B7/26 ,  H04J3/06 ,  H04J11/00 ,  H04L7/02 ,  H04Q7/20 ,  H04W88/18 ,  H04B7/01 ,  H04J13/06

    Abstract: A coherent reverse channel, a per-chip spreading function, orthogonal spreading functions and a time alignment of all traffic channels are implemented such that the main signal of each channel arrives at a base-station within a fraction of a chip of one another in accordance with the invention. With this, the orthogonality among all channels is maintained, and, when demodulated, all channels except the channel of interest provides a cross-correlation of substantially zero with respect to the remaining signals.

    34.
    发明专利
    未知

    公开(公告)号：DE69227350T2

    公开(公告)日：1999-05-06

    申请号：DE69227350

    申请日：1992-02-24

    Applicant: MOTOROLA INC

    Inventor： BRUCKERT EUGENE ,  FALCONER DAVID

    IPC: H04B1/707 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18

    Abstract: A method and apparatus is provided for transmitting spread spectrum signals. The transmitter (242) receives data symbols (214). Subsequently, the transmitter (242) splits (244) each particular set of two received data symbols (214) into a first and second array of data symbols (252, 254) according to either of two algorithms. The first algorithm includes providing both data symbols (214) of the particular set to the first and second array of data symbols (252, 254) and the second algorithm includes providing one of the data symbols (214) of the particular set to the first array of data symbols (252) and the other of the data symbols (214) of the particular set to the second array of data symbols (254). Subsequently, the transmitter (242) determines particular channels to transmit the first and second array of data symbols (252, 254) by spreading (232, 234) the first and second array of data symbols (252, 254) with a predetermined length Walsh code (216). The transmitter (242) accommodates a variable number of data channels by selecting a particular algorithm from a group consisting essentially of a first algorithm and a second algorithm and setting the predetermined length Walsh code (216) in response to the particular algorithm selected.

    35.
    发明专利
    未知

    公开(公告)号：FR2746236A1

    公开(公告)日：1997-09-19

    申请号：FR9702533

    申请日：1997-03-04

    Applicant: MOTOROLA INC

    Inventor： BRUCKERT EUGENE ,  LING FUYUN

    IPC: H04B1/712 ,  H04L1/06 ,  H04B7/216 ,  H04B1/16 ,  H04L12/28

    Abstract: A method (300) for adaptively adjusting weighting coefficients (188, 190, 192) in a code division multiple access (CDMA) radio receiver (100). A representation (172) of a desired RF signal (166) is received (108, 124, 127). A plurality of pilot signals (178, 182, 186) are generated responsive to the representation (172) of a desired RF signal (166). Each of a plurality of weighting coefficients (188, 190, 192) is determined responsive to more than one of the plurality of pilot signals (178, 182, 186).

    36.
    发明专利
    未知

    公开(公告)号：FR2746233A1

    公开(公告)日：1997-09-19

    申请号：FR9702531

    申请日：1997-03-04

    Applicant: MOTOROLA INC

    Inventor： BRUCKERT EUGENE ,  LING FUYUN

    IPC: H04B1/712 ,  H04L1/06 ,  H04B1/16 ,  H04B7/216 ,  H04L12/28

    Abstract: A method (250) determines weighting coefficients (188, 190, 192) in a code division multiple access (CDMA) radio receiver (100). A representation (172) of a desired RF signal (166) is received (108, 124, 127). A plurality of data signals (176, 180, 184) are generated responsive to the representation (172) of a desired RF signal (166). A plurality of pilot signals (178, 182, 186) are generated responsive to the first representation (172) of a desired RF signal (166). A total received signal power (174) is measured (128). A plurality of weighting coefficients (188, 190, 192) are determined responsive to the plurality of data signals (176, 180, 184), the plurality of pilot signals (178, 182, 186) and the total received signal power (174).

    38.
    发明专利
    未知

    公开(公告)号：BR9305563A

    公开(公告)日：1995-12-26

    申请号：BR9305563

    申请日：1993-06-14

    Applicant: MOTOROLA INC

    Inventor： BRUCKERT EUGENE

    IPC: H04B1/10 ,  H04B1/7107 ,  H04B7/216 ,  H04J13/00

    Abstract: A spread-spectrum noise canceller (182) is provided. A received phase and a received amplitude for a first (216) and a second (236) component of a received spread-spectrum signal (200) is determined. The second component (236) is structurally similar to [a replica of] the first component (216), but differs by being received at a different time, being transmitted along a different path, or having a different phase [which was received at a different time]. In addition, the spread-spectrum signal (200) includes a first and a second known signal. A portion of a spread-spectrum noise signal in the received signal (200) is canceled by generating an estimated signal (270) by spreading (260) the second known signal at the second component received phase (204) with the first known signal at the first component received phase (224) and adjusting a gain (268) of an integrated form of the spread second known signal as a function of the received amplitudes of the first (216) and the second (236) components. Subsequently, the second known signal is processed out of the received spread-spectrum signal (200) by subtracting (166) the estimated signal (270) from a demodulated form (216, 236) of the received spread-spectrum signal (200).

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