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23 records (took 0.02 seconds)

    1.
    发明专利
    未知

    公开(公告)号：FI952262A0

    公开(公告)日：1995-05-10

    申请号：FI952262

    申请日：1995-05-10

    Applicant: MOTOROLA INC

    Inventor： BORTH DAVID E ,  HAUG JOHN R ,  RASKY PHILLIP D ,  CHIASSON GREGORY M

    IPC: G06F11/10 ,  H03M13/23 ,  H03M13/27 ,  H04B7/26 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06 ,  H04W88/06 ,  H04B ,  H04L

    Abstract: A dual mode radio communication unit (102, 104) for a digital communication system is provided having an error controller including an error detection encoder (111) and a forward error correction encoder (112) which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm (261) or an error correction algorithm (202). In addition, the corresponding communication unit includes a mode selector (141) for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.

    2.
    发明专利
    未知

    公开(公告)号：MX9307019A

    公开(公告)日：1994-06-30

    申请号：MX9307019

    申请日：1993-11-10

    Applicant: MOTOROLA INC

    Inventor： CHIASSON GREGORY M ,  BORTH DAVID E ,  HAUG JOHN R ,  RASKI PHILLIP D

    IPC: H03M13/33 ,  H04B1/40 ,  H04L1/00 ,  H04L7/04 ,  H04B7/00

    Abstract: A dual mode radio communication unit for a digital communication system is provided having an error controller including an error detection encoder and a forward error correction encoder which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm or an error correction algorithm. In addition, the corresponding communication unit includes a mode selector for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.

    Method and Apparatus for Synchronizing a Received Signal in a Digital Radio Communication System
    3.
    发明专利
    Method and Apparatus for Synchronizing a Received Signal in a Digital Radio Communication System 未知

    公开(公告)号：CA2103497A1

    公开(公告)日：1994-06-08

    申请号：CA2103497

    申请日：1993-11-19

    Applicant: MOTOROLA INC

    Inventor： RASKY PHILLIP D ,  KEPLER JAMES F ,  CHIASSON GREGORY M

    IPC: H04B1/7156 ,  H04L7/04 ,  H04B7/26

    Abstract: A method and apparatus is provided for synchronizing a received communication signal. A synchronization signal is derived from a received signal having a plurality of synchronization words. Each synchronization word has a predetermined number of synchronization symbols. The synchronization signal is filtered. The filtering is characterized by spacing each filter tap to correspond to synchronization word length increments. Synchronization information is generated which is based on a comparison of the filtered synchronization signal to a threshold. Finally, the synchronization information is output based on a confidence derision derived from the synchronization information.

    METHOD OF SIGNAL WEIGHT PARAMETER ASSESSMENT IN A RECEIVER BY DIVERSITY METHOD, AND APPARATUS FOR MAKING THE SAME
    4.
    发明专利
    METHOD OF SIGNAL WEIGHT PARAMETER ASSESSMENT IN A RECEIVER BY DIVERSITY METHOD, AND APPARATUS FOR MAKING THE SAME 未知

    公开(公告)号：CZ249193A3

    公开(公告)日：1994-03-16

    申请号：CZ249193

    申请日：1993-01-25

    Applicant: MOTOROLA INC

    Inventor： RASKY PHILLIP D ,  CHIASSON GREGORY M

    IPC: H04B7/08 ,  H04L1/06 ,  H04J1/14

    Abstract: A diversity receiver (300) has improved diversity weighting parameter estimation. The receiver receives different versions of a signal (101) having encoded data, combines the versions and decodes the data contained within the combination. The decoded data output is then re-encoded using a similar technique as that at a transmitter which transmitted the signal (101). The re-encoded data is then used to calculate a diversity weighting parameter which is used to modify a stored replica each version. The modified versions are then combined and decoded to yield a more accurate estimate of the information contained within the signal (101) at diversity receiver (300).

    8.
    发明专利
    未知

    公开(公告)号：FI935155A

    公开(公告)日：1993-11-19

    申请号：FI935155

    申请日：1993-11-19

    Applicant: MOTOROLA INC

    Inventor： RASKY PHILLIP D ,  CHIASSON GREGORY M

    IPC: H04B7/08 ,  H04L1/06

    Abstract: A diversity receiver (300) has improved diversity weighting parameter estimation. The receiver receives different versions of a signal (101) having encoded data, combines the versions and decodes the data contained within the combination. The decoded data output is then re-encoded using a similar technique as that at a transmitter which transmitted the signal (101). The re-encoded data is then used to calculate a diversity weighting parameter which is used to modify a stored replica each version. The modified versions are then combined and decoded to yield a more accurate estimate of the information contained within the signal (101) at diversity receiver (300).

    10.
    发明专利
    未知

    公开(公告)号：MX9301511A

    公开(公告)日：1993-09-01

    申请号：MX9301511

    申请日：1993-03-18

    Applicant: MOTOROLA INC

    Inventor： RASKY PHILLIP D ,  CHIASSON GREGORY M

    IPC: H04B7/08 ,  H04L1/06 ,  G11C17/00

    Abstract: A diversity receiver (300) has improved diversity weighting parameter estimation. The receiver receives different versions of a signal (101) having encoded data, combines the versions and decodes the data contained within the combination. The decoded data output is then re-encoded using a similar technique as that at a transmitter which transmitted the signal (101). The re-encoded data is then used to calculate a diversity weighting parameter which is used to modify a stored replica each version. The modified versions are then combined and decoded to yield a more accurate estimate of the information contained within the signal (101) at diversity receiver (300).

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