MX167064B - Aparato y metodo de control de frecuencia para un receptor digital de radio - Google Patents

Aparato y metodo de control de frecuencia para un receptor digital de radio

Info

Publication number
MX167064B
MX167064B MX019875A MX1987590A MX167064B MX 167064 B MX167064 B MX 167064B MX 019875 A MX019875 A MX 019875A MX 1987590 A MX1987590 A MX 1987590A MX 167064 B MX167064 B MX 167064B
Authority
MX
Mexico
Prior art keywords
frequency
burst
radio receiver
correction
application
Prior art date
Application number
MX019875A
Other languages
English (en)
Inventor
David E Borth
James F Kepler
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of MX167064B publication Critical patent/MX167064B/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0057—Closed loops quadrature phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors

Abstract

La presente invención se refiere a un aparato para el control de frecuencia, para un sistema de comunicaciones de radio, de modo de ráfaga, que emplea una señal de corrección de frecuencia, transmitida como una ráfaga, para habilitar la corrección de las diferencias en frecuencia entre la frecuencia del portador de radio de una ráfaga de comunicación subsecuente, y la frecuencia de recepción por un receptor de radio, el aparato para controlar la frecuencia se caracteriza por; un elemento, que incluye un oscilador de frecuencia variable, para recibir una ráfaga de corrección de frecuencia y para procesar una ráfaga de comunicación, que tiene una diferencia de frecuencia entre el oscilador de frecuencia variable y la frecuencia del portador de radio de la ráfaga de comunicación; y un elemento, acoplado al elemento que recibe la ráfaga de señal de corrección de frecuencia, para generar un valor de señal de control singular y para aplicar este valor de señal de control singular al oscilador de frecuencia variable, para corregir la diferencia en frecuencia.
MX019875A 1989-03-31 1990-03-13 Aparato y metodo de control de frecuencia para un receptor digital de radio MX167064B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/331,557 US4887050A (en) 1989-03-31 1989-03-31 Frequency control apparatus and method for a digital radio receiver

Publications (1)

Publication Number Publication Date
MX167064B true MX167064B (es) 1993-03-01

Family

ID=23294456

Family Applications (1)

Application Number Title Priority Date Filing Date
MX019875A MX167064B (es) 1989-03-31 1990-03-13 Aparato y metodo de control de frecuencia para un receptor digital de radio

Country Status (15)

Country Link
US (1) US4887050A (es)
EP (1) EP0389974B1 (es)
JP (1) JP3275178B2 (es)
CN (1) CN1016034B (es)
AR (1) AR244924A1 (es)
AT (1) ATE154481T1 (es)
AU (1) AU5161190A (es)
CA (1) CA2009468C (es)
DE (1) DE69030892T2 (es)
DK (2) DK0389974T3 (es)
FI (1) FI905571A0 (es)
IE (1) IE62289B1 (es)
MX (1) MX167064B (es)
NO (1) NO905055L (es)
WO (1) WO1990012457A1 (es)

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JP2659060B2 (ja) * 1994-07-06 1997-09-30 日本電気株式会社 周波数誤差検出方法
US5557643A (en) * 1995-04-07 1996-09-17 Hughes Electronics Automatic frequency control system for GMSK-modulated signals
JP2755210B2 (ja) * 1995-04-11 1998-05-20 日本電気株式会社 周波数自動制御回路
CN1055495C (zh) * 1995-05-05 2000-08-16 何秀岭 婴儿胎脂清洗剂的制作方法
JPH09162936A (ja) * 1995-12-11 1997-06-20 Nec Corp 周波数オフセット補正機能付き通信装置
CN1049451C (zh) * 1996-01-18 2000-02-16 华南理工大学 一种高效机场跑道清洗剂的制备方法
JPH09219693A (ja) * 1996-02-09 1997-08-19 Mitsubishi Electric Corp デジタル放送受信機
US5745848A (en) * 1996-03-04 1998-04-28 Motorola, Inc. Method and apparatus for eliminating interference caused by spurious signals in a communication device
KR100193837B1 (ko) * 1996-08-24 1999-06-15 윤종용 시분할다윈접속 디지탈 이동통신 시스템의 주파수 교정 버스트 검출방법
FR2760926B1 (fr) * 1997-03-13 1999-04-16 Alsthom Cge Alcatel Dispositif de supression des sauts parasites de composante continue pour recepteur radio de type frequence intermediaire zero et procede de suppression correspondant
US6072841A (en) * 1997-07-01 2000-06-06 Hughes Electronics Corporation Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels
EP0940958A1 (en) * 1998-03-03 1999-09-08 Sony International (Europe) GmbH Method and device for digitally demodulating a frequency modulated signal
FR2792794B1 (fr) * 1999-04-23 2002-10-31 Telediffusion Fse Procede de depliement d'un signal de phase, systeme de depliement de phase lineaire et dispositif de recuperation de porteuse
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US6370205B1 (en) * 1999-07-02 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for performing DC-offset compensation in a radio receiver
JP4123320B2 (ja) * 1999-09-17 2008-07-23 ソニー株式会社 受信機およびそのｉｃ
RU2005101209A (ru) * 2002-06-20 2005-08-27 Квэлкомм Инкорпорейтед (US) Смещения по постоянному току в системах связи
US8559559B2 (en) * 2002-06-20 2013-10-15 Qualcomm, Incorporated Method and apparatus for compensating DC offsets in communication systems
SG111094A1 (en) * 2002-12-05 2005-05-30 Oki Techno Ct Singapore Pte Digital receiver
JP4154591B2 (ja) * 2003-04-25 2008-09-24 日本電気株式会社 周波数オフセットの検出処理システム及びそれを用いた周波数オフセットの検出処理方法
DE10348846B4 (de) * 2003-10-21 2010-07-08 Infineon Technologies Ag Verfahren zur Schätzung eines Frequenzversatzes eines modulierten Bandpass-Signals
US7215724B2 (en) * 2003-11-12 2007-05-08 Benq Corporation Signal demodulation in a mobile receiver
US7688256B2 (en) * 2004-06-24 2010-03-30 Bae Systems Plc Velocity extraction
CN101039125B (zh) * 2006-03-16 2013-03-13 湖北众友科技实业股份有限公司 用于td-scdma终端测试的频率偏差测量的方法和装置
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Also Published As

Publication number Publication date
AR244924A1 (es) 1993-11-30
CA2009468A1 (en) 1990-09-30
NO905055D0 (no) 1990-11-22
JP3275178B2 (ja) 2002-04-15
US4887050A (en) 1989-12-12
DE69030892T2 (de) 1998-01-02
FI905571A0 (fi) 1990-11-09
DK281790D0 (da) 1990-11-27
EP0389974A1 (en) 1990-10-03
ATE154481T1 (de) 1997-06-15
NO905055L (no) 1990-11-22
IE900871L (en) 1990-09-30
IE62289B1 (en) 1995-01-25
DE69030892D1 (de) 1997-07-17
CN1016034B (zh) 1992-03-25
CA2009468C (en) 1994-02-01
JPH02288447A (ja) 1990-11-28
DK0389974T3 (da) 1997-12-29
EP0389974B1 (en) 1997-06-11
CN1046074A (zh) 1990-10-10
AU5161190A (en) 1990-11-05
DK281790A (da) 1990-11-27
WO1990012457A1 (en) 1990-10-18

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