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公开(公告)号：FI831066L
公开(公告)日：1983-03-29
申请号：FI831066
申请日：1983-03-29
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL
IPC: H03B20060101 , H03B19/00 , H04L27/30 , H03B
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公开(公告)号：ES2097734T3
公开(公告)日：1997-04-16
申请号：ES88106385
申请日：1988-04-21
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL
Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.
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公开(公告)号：DE3855764D1
公开(公告)日：1997-03-06
申请号：DE3855764
申请日：1988-04-21
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL
Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.
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公开(公告)号：HK19497A
公开(公告)日：1997-02-20
申请号：HK19497
申请日：1997-02-20
Applicant: MOTOROLA INC
Inventor： BORTH DAVID EDWARD , WANG CHIH-FEI , RABE DUANE C , LABEDZ GERALD PAUL
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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.
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Patent Agency Ranking
公开(公告)号：DE69024533T2
公开(公告)日：1996-08-01
申请号：DE69024533
申请日：1990-05-25
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , RABE DUANE C
Abstract: There is provided a method of rapid Received Signal Strength Indication (RSSI) of a time-dispersed signal having echoes (D, Fig. 1C) (where the time dispersal represents a significant fraction or more of the transmitted symbol interval). It comprises a sliding correlation (304) of a received signal against a known sequence or via channel sounding to obtain the time-dispersal function of the communications channel upon which the signal is transmitted (306/307) and a summation of the squares of the quadrature components of the energies at relative maxima of the correlations (306/307) (correlation peaks determined with reference to a threshold level (305)) to integrate the energy defined by the correlation function to determine the energy present among the time-dispersed echoes utilizing the time-dispersal function. Thus, the energy present in the time-dispersed echoes is related to the received signal strength, the RSSI comprises a scalar of the energy present and the scalar comprises a function of the receiver's gain, RSSI determinations during any given interval are less dependent upon the ambulatory velocity of the receiver, and RSSI determinations of equivalent accuracy are obtained more rapidly or more accurate RSSI determinations are obtained per unit time.
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公开(公告)号：DE69024533D1
公开(公告)日：1996-02-15
申请号：DE69024533
申请日：1990-05-25
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , RABE DUANE C
Abstract: There is provided a method of rapid Received Signal Strength Indication (RSSI) of a time-dispersed signal having echoes (D, Fig. 1C) (where the time dispersal represents a significant fraction or more of the transmitted symbol interval). It comprises a sliding correlation (304) of a received signal against a known sequence or via channel sounding to obtain the time-dispersal function of the communications channel upon which the signal is transmitted (306/307) and a summation of the squares of the quadrature components of the energies at relative maxima of the correlations (306/307) (correlation peaks determined with reference to a threshold level (305)) to integrate the energy defined by the correlation function to determine the energy present among the time-dispersed echoes utilizing the time-dispersal function. Thus, the energy present in the time-dispersed echoes is related to the received signal strength, the RSSI comprises a scalar of the energy present and the scalar comprises a function of the receiver's gain, RSSI determinations during any given interval are less dependent upon the ambulatory velocity of the receiver, and RSSI determinations of equivalent accuracy are obtained more rapidly or more accurate RSSI determinations are obtained per unit time.
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公开(公告)号：FI94693B
公开(公告)日：1995-06-30
申请号：FI885253
申请日：1988-11-14
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL
Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.
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公开(公告)号：DE3851208T2
公开(公告)日：1995-03-09
申请号：DE3851208
申请日：1988-10-17
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL , BORTH DAVID EDWARD
Abstract: The method and apparatus for rapid phase acquisition and random radio channel phase error compensation for a TDMA QPSK receiver is disclosed. Received quadrature signals having a known synchronizing sequence transmitted on one of the vectors is correlated to a local replica of the sequence. The output correlation detection signals are held for the duration of the TDMA timeslot and multiplied by the received quadrature signals to produce two pairs of products. The mutually exclusive product pairs are summed to recover data having the random phase error compensated.
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公开(公告)号：NO175695B
公开(公告)日：1994-08-08
申请号：NO885763
申请日：1988-12-27
Applicant: MOTOROLA INC
Inventor： LABEDZ GERALD PAUL
Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.
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