MY120849A - Methods and apparatuses for synchronization and modulation type detection. - Google Patents

Methods and apparatuses for synchronization and modulation type detection.

Info

Publication number
MY120849A
MY120849A MYPI20002892A MYPI20002892A MY120849A MY 120849 A MY120849 A MY 120849A MY PI20002892 A MYPI20002892 A MY PI20002892A MY PI20002892 A MYPI20002892 A MY PI20002892A MY 120849 A MY120849 A MY 120849A
Authority
MY
Malaysia
Prior art keywords
modulation
type
transmitter
receiver
communication system
Prior art date
Application number
MYPI20002892A
Inventor
Lindoff Bengt
Khullar Anders
Stenstrom Niklas
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of MY120849A publication Critical patent/MY120849A/en

Links

Classifications

    • 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
    • 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03401—PSK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

IN A COMMUNICATION SYSTEM INCLUDING A TRANSMITTER AND A RECEIVER, THE RECEIVER IS SYNCHRONIZED WITH THE TRANSMITTER, AND A MODULATION TYPE IN A SIGNAL TRANSMITTED BY THE TRANSMITTER AND RECEIVED BY THE RECEIVER IS DETECTED. A FIRST PORTION OF THE RECEIVED SIGNAL IS CORRELATED WITH ONE OR MORE SIGNALS REPRESENTING MODULATION TYPES USED BY THE COMMUNICATION SYSTEM TO DETECT THE TYPE OF MODULATION BEING USED IN THE RECEIVED SIGNAL. SYNCHRONIZATION IS ESTABLISHED BETWEEN THE TRANSMITTER AND THE RECEIVER. THE FIRST PORTION MAY BE CORRELATED WITH EACH OF ONE OR MORE DIFFERENT SIGNALS REPRESENTING VARIOUS MODULATION TYPES USED IN THE COMMUNICATION SYSTEM TO DETECT THE TYPE OF MODULATION USED. ALTERNATELY, THE FIRST PORTION OF THE RECEIVED SIGNAL MAY BE DEROTATED BY DIFFERENT AMOUNTS TO PRODUCE A PLURALITY OF DEROTATED SIGNALS THAT ARE CORRELATED WITH THE SIGNAL REPRESENTING MODULATION USED BY THE COMMUNICATION SYSTEM IN ORDER TO DETECT THE TYPE OF MODULATION USED.IF THE CORRELATION DOES NOT RESULT IN A DETERMINATION OF THE MODULATION TYPE, EITHER A PREDETERMINED MODULATION TYPE IS SELECTED AS THE MODULATION TYPE, OR THE DECISION OF THE MODULATION TYPE IS MADE AT A LATER STAGE BASED, E.G.,ON A COMPARISON OF SIGNAL QUALITIES OR EQUALIZATION RESULTS.
MYPI20002892A 1999-07-01 2000-06-27 Methods and apparatuses for synchronization and modulation type detection. MY120849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/340,254 US6463107B1 (en) 1999-07-01 1999-07-01 Methods and apparatuses for synchronization and modulation type detection

Publications (1)

Publication Number Publication Date
MY120849A true MY120849A (en) 2005-11-30

Family

ID=23332545

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20002892A MY120849A (en) 1999-07-01 2000-06-27 Methods and apparatuses for synchronization and modulation type detection.

Country Status (9)

Country Link
US (1) US6463107B1 (en)
EP (1) EP1197050B1 (en)
JP (1) JP4464022B2 (en)
CN (1) CN1166139C (en)
AT (1) ATE323996T1 (en)
AU (1) AU5820700A (en)
DE (1) DE60027432T2 (en)
MY (1) MY120849A (en)
WO (1) WO2001003397A1 (en)

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US7012966B2 (en) * 2001-05-21 2006-03-14 At&T Corp. Channel estimation for wireless systems with multiple transmit antennas
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US8107560B2 (en) * 2004-05-12 2012-01-31 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for interference cancellation in communication signal processing
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US7499506B2 (en) * 2005-03-22 2009-03-03 Qualcomm Incorporated Detection of signal modulation format type
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US7697638B2 (en) * 2005-08-16 2010-04-13 Freescale Semiconductor, Inc. Modulation detection in a SAIC operational environment
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US8358723B1 (en) * 2005-11-12 2013-01-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Self-configurable radio receiver system and method for use with signals without prior knowledge of signal defining characteristics
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Also Published As

Publication number Publication date
US6463107B1 (en) 2002-10-08
AU5820700A (en) 2001-01-22
DE60027432T2 (en) 2006-09-14
WO2001003397A1 (en) 2001-01-11
JP4464022B2 (en) 2010-05-19
EP1197050B1 (en) 2006-04-19
EP1197050A1 (en) 2002-04-17
CN1372744A (en) 2002-10-02
JP2003503962A (en) 2003-01-28
ATE323996T1 (en) 2006-05-15
CN1166139C (en) 2004-09-08
DE60027432D1 (en) 2006-05-24

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