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    CHANNEL ESTIMATING METHOD
    1.
    发明专利
    CHANNEL ESTIMATING METHOD 失效

    公开(公告)号：JP2000349695A

    公开(公告)日：2000-12-15

    申请号：JP2000123005

    申请日：2000-04-24

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BUEHRER MICHAEL R ,  LIU SHANG-CHIEH ,  NICOLOSO STEVEN PETER

    IPC: H04B1/707 ,  H04B3/10 ,  H04B7/005 ,  H04L25/02 ,  H04L27/01 ,  H04J13/00

    Abstract: PROBLEM TO BE SOLVED: To provide a method for estimating a channel about the wireless communication by generating the initial channel estimated value via a pilot signal contained in a receiving signal, generating the estimated value of a relative data signal from the initial channel estimated value and then generating the new channel estimated value from the estimated data signal. SOLUTION: An initial channel estimator 10 estimates a physical channel distortion via a pilot signal of a received signal and generates the initial channel estimated value. A data estimator 12 estimates the data from the initial channel estimated value according to a prescribed expression and then sets the count value C at 0 to the estimated data. If the count value C set to the estimated value is smaller than the prescribed threshold, the estimator 12 sends the estimated data and the relative count value C to an updated channel estimator 14. The estimator 14 generates the updated channel estimated value from the received estimated data.

    2.
    发明专利
    未知

    公开(公告)号：BR0002785A

    公开(公告)日：2001-01-30

    申请号：BR0002785

    申请日：2000-06-21

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BUEHRER R MICHAEL ,  HAHM MARK DAVID ,  LIU SHANG-CHIEH ,  NICOLOSO STEVEN PETER

    IPC: H04J13/04 ,  H04B1/10 ,  H04B1/12 ,  H04B7/04 ,  H04B7/155 ,  H04B7/24 ,  H04Q7/30

    Abstract: The base station system includes a cancellation processor connected to a plurality of conventional signal processors. Under the control of a controller, the signal processors acquire user signals in signals received by the base station antennas. The controller controls the cancellation processor to perform cancellation operations with respect to the acquired user signals. The cancellation processor includes first-nth filter stages. Each filter stage operates in the same manner. A filter stage obtains, in parallel, the acquired user signals from signals supplied thereto by estimating symbols in the acquired user signals under the control of the controller. The cancellation processor also includes a cancellation stage associated with each filter stage. Each cancellation stage cancels, in parallel, the obtained user signals output from the associated filter stage from the signals received by the base station antennas. The resulting residual signals output from a cancellation stage are supplied to the next filter stage, and the signals supplied to the first filter stage are the signals received by the base station antennas. A cancellation stage cancels the obtained user signals received thereby from the received signals at a substantially same time with respect to the received signals.

    5.
    发明专利
    未知

    公开(公告)号：BR0004837A

    公开(公告)日：2001-01-23

    申请号：BR0004837

    申请日：2000-04-10

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BUEHRER R MICHAEL ,  LIU SHANG-CHIEH ,  NICOLOSO STEVEN PETER ,  UPTEGROVE DIRCK

    IPC: H04L27/01 ,  H04B7/005 ,  H04L25/02 ,  H04Q7/38

    Abstract: A frequency offset estimator (10) generates a frequency offset estimation, which is used by a frequency offset compensator (12) to compensate for the effect in the received signal and generate compensated received symbols in known and unknown signal components, used by a channel estimator (14) to generate an estimation of channel distortion. The distortion estimation is used by a compensator (16) to compensate for channel distortion in the compensated received symbols of unknown signal components and a window size generator (18) adaptively generates a window size based on the linear regression coefficient for the channel estimator (14).

    Base station system including parallel interference cancellation processor
    6.
    发明专利
    Base station system including parallel interference cancellation processor 未知

    公开(公告)号：AU4266200A

    公开(公告)日：2001-01-04

    申请号：AU4266200

    申请日：2000-06-26

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BUEHRER R MICHAEL ,  HAHM MARK DAVID ,  LIU SHANG-CHIEH ,  NICOLOSO STEVEN PETER

    IPC: H04J13/04 ,  H04B1/10 ,  H04B1/12 ,  H04B7/04 ,  H04B7/155 ,  H04B7/24 ,  H04Q7/30 ,  H04L1/20

    Abstract: The base station system includes a cancellation processor connected to a plurality of conventional signal processors. Under the control of a controller, the signal processors acquire user signals in signals received by the base station antennas. The controller controls the cancellation processor to perform cancellation operations with respect to the acquired user signals. The cancellation processor includes first-nth filter stages. Each filter stage operates in the same manner. A filter stage obtains, in parallel, the acquired user signals from signals supplied thereto by estimating symbols in the acquired user signals under the control of the controller. The cancellation processor also includes a cancellation stage associated with each filter stage. Each cancellation stage cancels, in parallel, the obtained user signals output from the associated filter stage from the signals received by the base station antennas. The resulting residual signals output from a cancellation stage are supplied to the next filter stage, and the signals supplied to the first filter stage are the signals received by the base station antennas. A cancellation stage cancels the obtained user signals received thereby from the received signals at a substantially same time with respect to the received signals.

    BASE STATION SYSTEM INCLUDING PARALLEL INTERFERENCE CANCELLATION PROCESSOR
    7.
    发明专利
    BASE STATION SYSTEM INCLUDING PARALLEL INTERFERENCE CANCELLATION PROCESSOR 未知

    公开(公告)号：CA2311906A1

    公开(公告)日：2000-12-29

    申请号：CA2311906

    申请日：2000-06-16

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： HAHM MARK DAVID ,  LIU SHANG-CHIEH ,  BUEHRER R MICHAEL ,  NICOLOSO STEVEN PETER

    IPC: H04J13/04 ,  H04B1/10 ,  H04B1/12 ,  H04B7/04 ,  H04B7/155 ,  H04B7/24 ,  H04Q7/30 ,  H04Q7/36

    Abstract: The base station system includes a cancellation processor connected to a plurality of conventional signal processors. Under the control of a controller, the signal processors acquire user signals in signals received by the base station antennas. The controller controls the cancellation processor to perform cancellation operations with respect to the acquired user signals. The cancellation processor includes first-nth filter stages. Each filter stage operates in the same manner. A filter stage obtains, in parallel, the acquired user signals from signals supplied thereto by estimating symbols in the acquired user signals under the control of the controller. The cancellation processor also includes a cancellation stage associated with each filter stage. Each cancellation stage cancels, in parallel, the obtained user signals output from the associated filter stage from the signals received by the base station antennas. The resulting residual signals output from a cancellation stage are supplied to the next filter stage, and the signals supplied to the first filter stage are the signals received by the base station antennas. A cancellation stage cancels the obtained user signals received thereby from the received signals at a substantially same time with respect to the received signals.

    8.
    发明专利
    未知

    公开(公告)号：BR0002749A

    公开(公告)日：2000-12-19

    申请号：BR0002749

    申请日：2000-04-12

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BUEHRER R MICHAEL ,  LIU SHANG-CHIEH ,  NICOLOSO STEVEN PETER

    IPC: H04B1/707 ,  H04B3/10 ,  H04B7/005 ,  H04L25/02 ,  H04L27/01 ,  H04B7/216

    Abstract: An initial channel estimator initially estimates distortion in the physical channel, step 20, using the pilot signal in the received signal and determines an estimate, step 25, which is sent with an associated count value to an update channel estimator, step 35, where an updated channel estimate is incremented, step 45 and the estimation data are re-estimated using an update channel estimator, step 50. Steps 35-50 are repeated until the count value exceeds a predetermined threshold and estimated data are then output as the output signal.

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