NO993129L - Symbollåsedetektor - Google Patents

Symbollåsedetektor

Info

Publication number
NO993129L
NO993129L NO993129A NO993129A NO993129L NO 993129 L NO993129 L NO 993129L NO 993129 A NO993129 A NO 993129A NO 993129 A NO993129 A NO 993129A NO 993129 L NO993129 L NO 993129L
Authority
NO
Norway
Prior art keywords
symbol lock
detector
sampling
offset
lock detector
Prior art date
Application number
NO993129A
Other languages
English (en)
Norwegian (no)
Other versions
NO993129D0 (no
Inventor
Dan L Westfall
Original Assignee
Gte Government Syst
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 Gte Government Syst filed Critical Gte Government Syst
Publication of NO993129D0 publication Critical patent/NO993129D0/no
Publication of NO993129L publication Critical patent/NO993129L/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • 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
    • H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
    • 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
    • H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Burglar Alarm Systems (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Fire Alarms (AREA)
NO993129A 1996-12-24 1999-06-23 Symbollåsedetektor NO993129L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77258796A 1996-12-24 1996-12-24
PCT/US1997/024195 WO1998028703A2 (fr) 1996-12-24 1997-12-24 Detecteur de verrouillage de symboles

Publications (2)

Publication Number Publication Date
NO993129D0 NO993129D0 (no) 1999-06-23
NO993129L true NO993129L (no) 1999-08-16

Family

ID=25095565

Family Applications (1)

Application Number Title Priority Date Filing Date
NO993129A NO993129L (no) 1996-12-24 1999-06-23 Symbollåsedetektor

Country Status (9)

Country Link
US (1) US6091787A (fr)
EP (1) EP0953242A2 (fr)
JP (1) JP2001507197A (fr)
KR (1) KR20000057637A (fr)
AU (1) AU739051B2 (fr)
CA (1) CA2274718A1 (fr)
IL (1) IL130266A0 (fr)
NO (1) NO993129L (fr)
WO (1) WO1998028703A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6549594B1 (en) * 1999-05-28 2003-04-15 Nortel Networks Timing phase recovery method and apparatus
TWI294236B (en) * 2005-06-16 2008-03-01 Realtek Semiconductor Corp Method and apparatus for correcting symbol timing

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940694A (en) * 1971-10-29 1976-02-24 Sperry Rand Corporation Apparatus and method for reducing multiplicative gain variation distortions in data recording and transmission channels
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
FR2542536B1 (fr) * 1983-03-07 1985-07-12 Trt Telecom Radio Electr Dispositif de recuperation de la porteuse d'un signal d'entree module par sauts d'amplitude et par sauts de phase
US4555790A (en) * 1983-06-30 1985-11-26 Betts William L Digital modem having a monitor for signal-to-noise ratio
US4615038A (en) * 1984-06-06 1986-09-30 At&T Information Systems Inc. Equalization of modulated data signals utilizing tentative and final decisions and replication of non-linear channel distortion
US4679227A (en) * 1985-05-20 1987-07-07 Telebit Corporation Ensemble modem structure for imperfect transmission media
US4827431A (en) * 1987-01-20 1989-05-02 General Datacomm, Inc. Methods and systems for the simultaneous quantitative measurement of phase and amplitude jitter impairments and signal to noise ratio in a qam data communication channel
GB2204202B (en) * 1987-04-28 1991-11-27 Racal Communications Equip Radio transmitters
US4805191A (en) * 1987-11-25 1989-02-14 Motorola, Inc. Modem with improved timing recovery using equalized data
US4980897A (en) * 1988-08-12 1990-12-25 Telebit Corporation Multi-channel trellis encoder/decoder
US4995057A (en) * 1988-11-02 1991-02-19 At&T Bell Laboratories Technique for achieving the theoretical coding gain of digital signals incorporating error correction
FR2642243B1 (fr) * 1989-01-24 1991-04-19 Labo Electronique Physique Circuit de predistorsion adaptative
FR2644638B1 (fr) * 1989-03-14 1991-05-31 Labo Electronique Physique
FR2652969A1 (fr) * 1989-10-06 1991-04-12 Philips Electronique Lab Dispositif de predistorsion pour systeme de transmission numerique.
FR2652965A1 (fr) * 1989-10-06 1991-04-12 Philips Electronique Lab Dispositif de predistorsion pour systeme de transmission numerique.
AU627953B2 (en) * 1989-11-15 1992-09-03 Digital Equipment Corporation Integrated communications link having dynamically allocatable bandwidth and a protocol for transmission or allocation information over the link
US5276908A (en) * 1990-10-25 1994-01-04 Northern Telecom Limited Call set-up and spectrum sharing in radio communication on systems with dynamic channel allocation
US5249200A (en) * 1991-07-30 1993-09-28 Codex Corporation Device and method for combining precoding with symbol-rate spectral shaping
US5295138A (en) * 1992-04-21 1994-03-15 Northwest Starscon Limited Partnership Apparatus and method for optimal frequency planning in frequency division multiplexing transmissions
US5285474A (en) * 1992-06-12 1994-02-08 The Board Of Trustees Of The Leland Stanford, Junior University Method for equalizing a multicarrier signal in a multicarrier communication system
JP3166321B2 (ja) * 1992-07-01 2001-05-14 日本電気株式会社 変調信号送信システム
US5548809A (en) * 1992-07-15 1996-08-20 Southwestern Bell Technology Resources, Inc. Spectrum sharing communications system and system for monitoring available spectrum
US5394392A (en) * 1992-12-14 1995-02-28 At&T Corp. Method for transferring information using modems
US5479447A (en) * 1993-05-03 1995-12-26 The Board Of Trustees Of The Leland Stanford, Junior University Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
FR2717646B1 (fr) * 1994-03-16 1996-04-26 Alcatel Telspace Dispositif numérique de récupération large bande d'une porteuse.
US5519731A (en) * 1994-04-14 1996-05-21 Amati Communications Corporation ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise
US5621767A (en) * 1994-09-30 1997-04-15 Hughes Electronics Method and device for locking on a carrier signal by dividing frequency band into segments for segment signal quality determination and selecting better signal quality segment
US5606577A (en) * 1995-01-26 1997-02-25 Motorola Inc. Method and apparatus for a DMT transmitter having a data for matter coupled directly to a constellation encoder
US5519356A (en) * 1995-02-13 1996-05-21 National Semiconductor Corporation Methods and apparatuses for fast decision directed carrier recovery with wide locking range
US5751766A (en) * 1995-04-27 1998-05-12 Applied Signal Technology, Inc. Non-invasive digital communications test system
US5726978A (en) * 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
FR2739239B1 (fr) * 1995-09-27 1997-11-14 Alcatel Telspace Dispositif de correction d'un defaut de quadrature d'un modulateur en quadrature et/ou d'un demodulateur d'un signal a pluralite d'etats de phase, emetteur et recepteur correspondants
US5710766A (en) * 1995-12-26 1998-01-20 Motorola, Inc. Method and apparatus for sharing a common bandwidth between two protocols in a radio communication system
US5694440A (en) * 1996-01-02 1997-12-02 Motorola, Inc. Data synchronizer lock detector and method of operation thereof
US5732333A (en) * 1996-02-14 1998-03-24 Glenayre Electronics, Inc. Linear transmitter using predistortion

Also Published As

Publication number Publication date
AU5623898A (en) 1998-07-17
IL130266A0 (en) 2000-06-01
EP0953242A2 (fr) 1999-11-03
WO1998028703A2 (fr) 1998-07-02
US6091787A (en) 2000-07-18
WO1998028703A3 (fr) 1998-09-17
NO993129D0 (no) 1999-06-23
JP2001507197A (ja) 2001-05-29
CA2274718A1 (fr) 1998-07-02
KR20000057637A (ko) 2000-09-25
AU739051B2 (en) 2001-10-04

Similar Documents

Publication Publication Date Title
US4599732A (en) Technique for acquiring timing and frequency synchronization for modem utilizing known (non-data) symbols as part of their normal transmitted data format
US6389088B1 (en) Synchronization and tracking in a digital communication system
US6023489A (en) Method and apparatus for code synchronization in a global positioning system receiver
TW393839B (en) A transmission system for digital audio broadcasting
HK1042193A1 (en) Method and apparatus for reverse link overload detection
CA2358931A1 (fr) Synchronisation de signaux ofdm
AU559003B2 (en) Communication over noisy lines
BR9913041A (pt) Processos para determinar um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital e uma localização de tempo de um sinal recebido e identificação de uma sequência de walsh-hadamard, para comunicar uma identidade de um grupo de códigos de embaralhamento de sinais para um sinal transmitido em um sistema de comunicação digital, sistema de transmissão de rádio digital, gerador de sinais em um transmissor de rádio e aparelho para uso na determinação de um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital
CA2002883A1 (fr) Correlateur differentiel pour systeme de communication a spectre etale
JPS6135035A (ja) 直列シ−ケンス拡張スペクトル信号処理を用いたコ−ド分割マルチプレクサ
NO990064L (no) FremgangsmÕte og apparat for kompensering av d.c. forskyvninger i et samplet signal
US5081652A (en) Offset correction
NO993729L (no) Doppler-peileapparat og fremgangsmÕte for lokalisering ved bruk av Doppler-peileapparat
GB2267630A (en) System for determining absolute phase of differentially-encoded phase-modulated signal
AU739342B2 (en) Phaselock threshold correction
AU6298999A (en) Synchronization method and apparatus employing partial sequence correlation
NO993129L (no) Symbollåsedetektor
US5093846A (en) Signal acquisition using modulation by a preselected code group
NO20004361L (no) Mottaker for signaler som er split-C/A-kodet
EP0157692A2 (fr) Mutiplexeur par codage utilisant un traitement d'un signal à spectre étalé au moyen d'une séquence directe
NZ501101A (en) Modulation detection method and apparatus
AU6446100A (en) Method for selecting modulation detector in receiver, and receiver
EP1310059A4 (fr) Systeme global de cryptage
CA2262882A1 (fr) Indicateur d'asservissement en frequence destine a un signal a onde pilote, demodule par une boucle d'asservissement en phase et en frequence
AU668230B2 (en) Frequency error detecting device capable of correctly detecting a frequency error between a carrier frequency and a standard frequency

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application