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公开(公告)号：WO2010053684A4
公开(公告)日：2010-09-30
申请号：PCT/US2009061230
申请日：2009-10-20
Applicant: MOTOROLA INC , VOOK FREDERICK W , BURIS NICHOLAS E , MUELLER BRUCE D
Inventor： VOOK FREDERICK W , BURIS NICHOLAS E , MUELLER BRUCE D
CPC classification number: H04B17/21
Abstract: A method and a system for calibrating at least one antenna (1,1-1,3. 1,j). At least a first antenna (1,4) within a first antenna array (102) can be selected as a primary reference antenna. At least one antenna (4,3) that is not within the first antenna array can be selected as a secondary reference antenna. At least a first signal propagation characteristic (122) can be measured based on at least one signal wirelessly communicated between the primary reference antenna and the secondary reference antenna. At least a second signal propagation characteristic (118) can be measured based on at least one signal wirelessly communicated between the secondary reference antenna and at least a second antenna (1,2) within the first antenna array. At least a first calibration coefficient can be determined for the second antenna.
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公开(公告)号：WO2010053684A3
公开(公告)日：2010-07-29
申请号：PCT/US2009061230
申请日：2009-10-20
Applicant: MOTOROLA INC , VOOK FREDERICK W , BURIS NICHOLAS E , MUELLER BRUCE D
Inventor： VOOK FREDERICK W , BURIS NICHOLAS E , MUELLER BRUCE D
CPC classification number: H04B17/21
Abstract: A method and a system for calibrating at least one antenna (1,1-1,3. 1,j). At least a first antenna (1,4) within a first antenna array (102) can be selected as a primary reference antenna. At least one antenna (4,3) that is not within the first antenna array can be selected as a secondary reference antenna. At least a first signal propagation characteristic (122) can be measured based on at least one signal wirelessly communicated between the primary reference antenna and the secondary reference antenna. At least a second signal propagation characteristic (118) can be measured based on at least one signal wirelessly communicated between the secondary reference antenna and at least a second antenna (1,2) within the first antenna array. At least a first calibration coefficient can be determined for the second antenna.
Abstract translation: 一种用于校准至少一个天线（1,1-1,3.1，j）的方法和系统。 可以选择第一天线阵列（102）内的至少第一天线（1,4）作为主参考天线。 可以选择不在第一天线阵列内的至少一个天线（4,3）作为辅助参考天线。 至少第一信号传播特性（122）可以基于在主参考天线和次参考天线之间无线传送的至少一个信号来测量。 至少第二信号传播特性（118）可以基于在第二天线阵列内的辅助参考天线与至少第二天线（1,2）之间无线传送的至少一个信号来测量。 可以为第二天线确定至少第一校准系数。
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公开(公告)号：CA2088721C
公开(公告)日：1999-02-23
申请号：CA2088721
申请日：1993-02-03
Applicant: MOTOROLA INC
Inventor： MUELLER BRUCE D , BAUM KEVIN L
Abstract: The adaptive bidirectional equalization process of the present invention first determines the point of lowest signal quality for the time slot being processed. Detection is then performed on the time slot in both directions until the processing meets at the point of lowest signal quality. This process reduces the bit error rate as compared to performing standard equalization on the time slot.
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公开(公告)号：CA2118720C
公开(公告)日：1998-09-15
申请号：CA2118720
申请日：1993-06-18
Applicant: MOTOROLA INC
Inventor： BAUM KEVIN L , MUELLER BRUCE D
Abstract: The process of the present invention computes the update (403) to the least mean square channel estimator taps. The update coefficient for each tap is computed independently based on the power of each tap (402) relative to the main tap power.
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公开(公告)号：CA2103392C
公开(公告)日：1998-08-11
申请号：CA2103392
申请日：1993-11-18
Applicant: MOTOROLA INC
Inventor： KAZECKI HENRY L , GOODE STEVEN H , DENNIS DONALD W , BAKER JAMES C , BAUM KEVIN L , MUELLER BRUCE D
Abstract: In a communications device, two coherent detection algorithms (102 and 103), one of which has a decision feedback equalizer (103), and a detector selection algorithm (104) are used to dynamically select a detector depending on whether delay spread distortion is present. First the correlation of the detector without the equalizer (102) is measured. If this correlation is greater than a predetermined threshold, the data from that detector (102) is used by the communications device. If the correlation is less than the threshold, the correlation of the detector with the equalizer (103) is measured. If this is less than the correlation of the detector without the equalizer (102), the data from the detector without the equalizer (102) is used, otherwise the data is taken from the equalizer (103). In any case, if the detector without the equalizer is used, the detector with the equalizer is turned off.
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Patent Agency Ranking
公开(公告)号：GB2313026A
公开(公告)日：1997-11-12
申请号：GB9713890
申请日：1996-11-01
Applicant: MOTOROLA INC
Inventor： CORRIGAN RICHARD JAMES , MUELLER BRUCE D , BURKE TIMOTHY MARK
Abstract: A method and apparatus in a communications system (100) for providing communications units (134) access therein in which the communications system (100) includes a cable distribution network (106) with a base communications unit (102) and a number of downstream communications units (134) all connected thereto. A plurality of channels are used to transmit data between the base communications unit (102 and the downstream communications units (134). A first set of channels are used primarily for access in the communications system (100) and a second set of channels are used for transmitting data within the communications system (100) after access has been gained. A mechanism is provided for handling collisions in transmissions between the downstream communications units (134) to the base communications unit (102) in attempting to gain access to the communications system (100)
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公开(公告)号：AU7720196A
公开(公告)日：1997-06-19
申请号：AU7720196
申请日：1996-11-01
Applicant: MOTOROLA INC
Inventor： CORRIGAN RICHARD JAMES , MUELLER BRUCE D , BURKE TIMOTHY M
IPC: H04H20/78 , H04H60/94 , H04H60/97 , H04L7/04 , H04L12/28 , H04N7/173 , H04N7/10 , H04N7/14 , H04H1/00 , H04J3/24 , H04J3/06 , H04J14/08
Abstract: A method and apparatus in a communications system (100) for providing communications units (134) access to the communications system (100). The communications. system (100) includes a cable distribution network (106) with an base communications unit (102) and a number of downstream communications units (134) all connected to the cable distribution network (106). A plurality of channels are used to transmit data between the base communications unit (102) and the downstream communications units (134). A first set of channels are used primarily for access the communications system (100) and a second set of channels are used for transmitting data within the communications system (100) after access to the communications system (100) has been gained. The base communications unit (102) sends a first type of data transmission including an identification of access channels used for requesting access to the communications system (100). The base communications unit (102) assigns channels within the second set of channels response to receiving a request for access to the communications system (100) on the first set of channels. A mechanism also is provided for handling collisions in transmissions between the downstream communications units (134) to the base communications unit (102) in attempting to gain access to the communications system (100).
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公开(公告)号：DE19612715A1
公开(公告)日：1996-10-10
申请号：DE19612715
申请日：1996-03-29
Applicant: MOTOROLA INC
Inventor： NOWACK JOSEPH M , MUELLER BRUCE D
Abstract: The decoder has a probability circuit (432) which generates branch metrics using bit-wise probabilities representing frame to frame correlation relationships. The branch metrics pass to a trellis decoder (434) which outputs decoded data bits as a function of the bit-wise probabilities for at least predetermined bit positions. The decoder uses squared Euclidean distance circuitry in the branch metric generator. Communication can be in computers, radio, radio/cellular/cordless or landline telephone while the transmission medium can be twisted wire, coaxial cable or optical fibre.
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公开(公告)号：GB2299491A
公开(公告)日：1996-10-02
申请号：GB9606236
申请日：1996-03-25
Applicant: MOTOROLA INC
Inventor： NOWACK JOSEPH , MUELLER BRUCE D
Abstract: A decoder circuit includes a probability circuit which generates branch metrics using bit-wise probabilities representing frame-to-frame correlation relationships. The branch metrics are input to a decoder which outputs decoded data bits as a function of the bit-wise probabilities for at least predetermined bit positions.
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公开(公告)号：DE4292274C2
公开(公告)日：1999-05-27
申请号：DE4292274
申请日：1992-05-08
Applicant: MOTOROLA INC
Inventor： BAUM KEVIN L , MUELLER BRUCE D
IPC: H03L7/02 , H03H21/00 , H03J7/04 , H03L7/06 , H04B1/10 , H04B3/06 , H04L27/22 , H03L7/085 , H03L7/107 , H04L27/06
Abstract: The process of the present invention generates an optimum automatic frequence control signal in an apparatus that has a plurality of adaptive algorithms, each adaptive algorithm having a reference signal with an associated frequency dither. The process starts by comparing the performance of each of the plurality of adaptive algorithms. This difference is input to a comparator (6) where it is compared to zero. This delta signal then modifies the numerically controlled oscillator frequency (8). After several iterations, the frequency offset is reduced to substantially zero.
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