-
公开(公告)号：ES2095261T3
公开(公告)日：1997-02-16
申请号：ES90916969
申请日：1990-09-24
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , BORTH DAVID EDWARD , RASKY PHILLIP DAVID
Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.
-
公开(公告)号：AU689588B2
公开(公告)日：1998-04-02
申请号：AU2457597
申请日：1997-04-11
Applicant: MOTOROLA INC
Inventor： BAUM KEVIN , KELTON JAMES ROBERT , RASKY PHILLIP DAVID
IPC: H04J3/06
Abstract: The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization. A plurality of multicarrier subscriber units receive a forward link signal and transmit a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusts a timing reference for transmitting signals to facilitate reverse link timing synchronization.
-
公开(公告)号：AU6729490A
公开(公告)日：1991-05-16
申请号：AU6729490
申请日：1990-09-24
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , BORTH DAVID EDWARD , RASKY PHILLIP DAVID
Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.
-
公开(公告)号：CA2223793C
公开(公告)日：2002-03-26
申请号：CA2223793
申请日：1997-04-11
Applicant: MOTOROLA INC
Inventor： BAUM KEVIN L , RASKY PHILLIP DAVID , KELTON JAMES ROBERT
Abstract: The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization. A plurality of multicarrier subscriber units receive a forward link signal and transmit a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusts a timing reference for transmitting signals to facilitate reverse link timing synchronization.
-
公开(公告)号：CA2223793A1
公开(公告)日：1997-11-06
申请号：CA2223793
申请日：1997-04-11
Applicant: MOTOROLA INC
Inventor： KELTON JAMES ROBERT , BAUM KEVIN L , RASKY PHILLIP DAVID
Abstract: The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization. A plurality of multicarrier subscriber units receive a forward link signal and transmit a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusts a timing reference for transmitting signals to facilitate reverse link timing synchronization.
-
Patent Agency Ranking6.发明专利
公开(公告)号：CA2087520A1
公开(公告)日：1993-01-03
申请号：CA2087520
申请日：1992-05-07
Applicant: MOTOROLA INC
Inventor： BORTH DAVID EDWARD , WINTER ERIC HELMUT , RASKY PHILLIP DAVID , BAUM KEVIN LYNN , MUELLER BRUCE DALE
IPC: H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22 , H04B1/10 , H04L1/20
Abstract: A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.
-
公开(公告)号：DK0495006T3
公开(公告)日：1996-12-23
申请号：DK90916969
申请日：1990-09-24
Applicant: MOTOROLA INC
Inventor： BORTH DAVID EDWARD , LABEDZ GERALD PAUL , RASKY PHILLIP DAVID
Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.
-
公开(公告)号：MX171792B
公开(公告)日：1993-11-15
申请号：MX2277090
申请日：1990-10-10
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , BORTH DAVID EDWARD , RASKY PHILLIP DAVID
Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.
-
9.发明公开MULTICARRIER REVERSE LINK TIMING SYNCHRONIZATION SYSTEM, DEVICE AND METHOD 失效设备，方法和系统对于多载波RUCK通道时间同步
公开(公告)号：EP0840964A4
公开(公告)日：2002-02-13
申请号：EP97920360
申请日：1997-04-11
Applicant: MOTOROLA INC
Inventor： BAUM KEVIN , KELTON JAMES ROBERT , RASKY PHILLIP DAVID
CPC classification number: H04W56/0005 , H04J3/0682
Abstract: The present invention provides a communication system (100), device (200), and method of reverse link symbol timing synchronization of transmitted signals to facilitate reverse link timing synchronization. A base unit (204) transmits a forward link signal (160) and determines a timing offset for signals received on a reverse link synchronization channel (150). A plurality of multicarrier subscriber units (202) receive a forward link signal (160) and transmits a reverse link symbol timing synchronization burst on a reverse link channel (160).
-
10.发明专利
公开(公告)号：CA2087520C
公开(公告)日：1998-12-22
申请号：CA2087520
申请日：1992-05-07
Applicant: MOTOROLA INC
Inventor： MUELLER BRUCE DALE , BAUM KEVIN LYNN , BORTH DAVID EDWARD , WINTER ERIC HELMUT , RASKY PHILLIP DAVID
IPC: H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22 , H04B1/10 , H04L1/20
Abstract: A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.02 seconds)
