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公开(公告)号：JP2006050672A
公开(公告)日：2006-02-16
申请号：JP2005292916
申请日：2005-10-05
Applicant: Motorola Inc , モトローラ・インコーポレイテッドMotorola Incorporated
Inventor： BIRCHLER MARK A , JASPER STEVEN C , WILSON TIMOTHY J
CPC classification number: H04B17/20
Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for determining signal usability, based on RF channel interference detection. SOLUTION: A receiver receives a stream of altered information symbols to generate an altered stream. The receiver determines fading signal representation from the altered stream, generates a determined fading signal, and determines the information symbol representation in a symbol stream from the altered stream, to generate the determined information symbol. The receiver determines the desired portion of the altered stream based on the determined information symbol and the determined fading signal, and determines an non-desired portion of the altered stream, based on the altered stream's desired portion and the altered stream. The receiver provides an indicator for the altered information symbol usability, based on the determined fading signal and the nondesired portions of the altered stream. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种基于RF信道干扰检测来确定信号可用性的方法和装置。
解决方案：接收器接收改变的信息符号流以生成改变的流。 接收机从改变的流确定衰落信号表示，产生确定的衰落信号，并且从改变的流确定符号流中的信息符号表示，以产生确定的信息符号。 接收机基于确定的信息符号和确定的衰落信号来确定改变的流的期望部分，并且基于改变的流的期望部分和改变的流来确定改变的流的不期望部分。 接收机基于确定的衰落信号和改变的流的不需要部分，为改变的信息符号可用性提供指示符。 版权所有（C）2006，JPO＆NCIPI
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2.发明专利
公开(公告)号：CA2140026A1
公开(公告)日：1994-12-08
申请号：CA2140026
申请日：1994-05-20
Applicant: MOTOROLA INC
Inventor： BIRCHLER MARK A , JASPER STEVEN C , WILSON TIMOTHY J
Abstract: A receiver may reduce the effects of distortion when determining signal usability in the following manner. Upon receiving a signal, the receiver separates a desired component, an undesired component, and a distortion component, wherein the desired component includes the signal that was originally transmitted and the undesired component includes interference and noise. Having isolated the distortion component, it can be mitigated such that the usability of the signal received can be determined based on a ratio between the desired and undesired components.
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公开(公告)号：CA1318358C
公开(公告)日：1993-05-25
申请号：CA616314
申请日：1992-02-19
Applicant: MOTOROLA INC
Inventor： JANC ROBERT V , JASPER STEVEN C , LONGLEY LESTER A , LAMBERT KATHERINE H , TURNEY WILLIAM J , LILLIE ROSS J
Abstract: DIGITAL RADIO FREQUENCY RECEIVER A digital radio receiver is described. The digital receiver (100) of the present invention contemplates a digital radio receiver which operates on a received analog signal which has been converter to a digital form after preselection at the output of the antenna. The digital receiver (100) of the present invention comprises a preselector (106), a high-speed analog-to-digital (A/D) converter (108), a digitally implemented intermediate-frequency (IF) selectivity section (110) having an output signal at substantially baseband frequencies, and digital signal processor (DSP)circuit (120) performing demodulation and audio filtering. The radio architecture of the present invention is programmably adaptable to virtually every known modulation scheme and is particularly suitable for implementation on integrated circuits.
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公开(公告)号：CA2098011A1
公开(公告)日：1993-04-29
申请号：CA2098011
申请日：1992-08-14
Applicant: MOTOROLA INC
Inventor： JASPER STEVEN C , BIRCHLER MARK A , SOLOMON JAMES D
Abstract: A quad 16 QAM transmission and reception methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses. Depending upon the embodiment, each 16 QAM pulse can include a time domain pilot reference, or an estimated pilot reference for that pulse can be determined either by reference to pilot references in other pulses sharing the same packet, or by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.
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公开(公告)号：CA1304786C
公开(公告)日：1992-07-07
申请号：CA517169
申请日：1986-08-29
Applicant: MOTOROLA INC
Inventor： JANC ROBERT V , JASPER STEVEN C , LONGLEY LESTER A , LAMBERT KATHERINE H , TURNEY WILLIAM J , LILLIE ROSS J
IPC: H03H17/02 , H03D1/22 , H03D3/00 , H04B1/26 , H04B14/04 , H03D1/24 , H04L7/00 , H04L23/02 , H04B1/10
Abstract: DIGITAL RADIO FREQUENCY RECEIVER A digital radio receiver is described. The digital receiver (100) of the present invention contemplates a digital radio receiver which operates on a received analog signal which has been converted to a digital form after preselection at the output of the antenna. The digital receiver (100) of the present invention comprises a preselector (106), a high-speed analog-to-digital (A/D) converter (108), a digitally implemented intermediate-frequency (IF) selectivity section (110) having an output signal at substantially baseband frequencies, and digital signal processor (DSP)circuit (120) performing demodulation and audio filtering. The radio architecture of the present invention is programmably adaptable to virtually every known modulation scheme and is particularly suitable for implementation on integrated circuits.
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Patent Agency Ranking
公开(公告)号：CA2097586A1
公开(公告)日：1992-06-20
申请号：CA2097586
申请日：1991-12-16
Applicant: MOTOROLA INC
Inventor： WILSON ALAN L , CUDAK MARK C , HIBEN BRADLEY M , ZIOLKO ERIC F , JASPER STEVEN C
Abstract: A transceiver compatible with both wide channel constant envelope 4 level FSK FM modulation and narrow channel pi /4 differential QPSK linear modulation allows compatible interaction between modified constant envelope and non-constant envelope transmitters. All Nyquist filtering occurs in the transmitters, and none in the receiver.
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公开(公告)号：CA1165840A
公开(公告)日：1984-04-17
申请号：CA391489
申请日：1981-12-04
Applicant: MOTOROLA INC
Inventor： JASPER STEVEN C , JANC ROBERT V , ROBINS DAVID S , RETZER MICHAEL H
Abstract: An apparatus and method for determining the period and frequency of a signal interfering with a desired Loran C signal are provided. A sample of the interfering signal is generated at a time corresponding to the peak of the autocorrelation function of the interfering signal with respect to the predetermined pulse tracking reference point of the Loran C signal. Indicia of the period and frequency of the interferer is obtained from the timing of the sample generated at the autocorrelation function peak.
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公开(公告)号：GB2440296A
公开(公告)日：2008-01-23
申请号：GB0721495
申请日：2006-03-31
Applicant: MOTOROLA INC , JASPER STEVEN C , CORKE ROBERT J , FRANK COLIN D , MAKHLOUF ISAM R
Inventor： JASPER STEVEN C , CORKE ROBERT J , FRANK COLIN D , MAKHLOUF ISAM R
Abstract: A system that includes a receiver (100) that is configured for: selecting (210) a set of demodulator output samples and a corresponding set of reference symbols; generating (220) a set of raw channel estimates based on the set of demodulator output samples and the corresponding set of reference symbols; subdividing (230) the set of raw channel estimates into a plurality of subsets; assigning and applying (240) a corresponding reference symbol magnitude quantization scheme to each subset; determining (250) a set of filter coefficients that is based on the quantization schemes applied to the subsets of raw channel estimates; and combining (260) the set of raw channel estimates with the set of filter coefficients to generate a channel estimate.
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公开(公告)号：PL173935B1
公开(公告)日：1998-05-29
申请号：PL31176494
申请日：1994-05-11
Applicant: MOTOROLA INC
Inventor： BIRCHLER MARK A , JASPER STEVEN C , WILSON TIMOTHY J
Abstract: A receiver that receives a stream of information symbols may detect the usability of the stream of information symbols received as follows. Upon receiving the stream of information symbols, the receiver separates the stream of information symbols into a desired portion and an undesired portion wherein the desired portion is the originally transmitted stream of information symbols and the undesired portion is interference and noise. From the undesired portion and the desired portion, the usability can be determined based on a ratio of the two portions.
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公开(公告)号：BR9205509A
公开(公告)日：1994-04-05
申请号：BR9205509
申请日：1992-08-14
Applicant: MOTOROLA INC
Inventor： JASPER STEVEN C , BIRCHLER MARK A , SOLOMON JAMES D
Abstract: A quad 16 QAM transmission and reception methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses. Depending upon the embodiment, each 16 QAM pulse can include a time domain pilot reference, or an estimated pilot reference for that pulse can be determined either by reference to pilot references in other pulses sharing the same packet, or by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.
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