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NO20063570L - Frekvensfeilestimering og rammesynkronisering i et OFMD-system - Google Patents

Frekvensfeilestimering og rammesynkronisering i et OFMD-system

Info

Publication number
NO20063570L
NO20063570L NO20063570A NO20063570A NO20063570L NO 20063570 L NO20063570 L NO 20063570L NO 20063570 A NO20063570 A NO 20063570A NO 20063570 A NO20063570 A NO 20063570A NO 20063570 L NO20063570 L NO 20063570L
Authority
NO
Norway
Prior art keywords
frequency error
target
frame synchronization
ofdm symbol
error estimation
Prior art date
Application number
NO20063570A
Other languages
English (en)
Inventor
Rajiv Vijayan
Alok Kumar Gupta
Raghuraman Krishnamoorthi
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of NO20063570L publication Critical patent/NO20063570L/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

Frekvensfeilestimering og rammesynkronisering utføres på et mottaker i et OFDM system basert på et mål som indikerer detektert pilotkraft. Målet kan defineres basert på krysskorrelering mellom to mottatte symboler bestemt i to OFDM symbolperioder. For frekvensfeilestimering regnes det ut en målverdi for hver av de antatte frekvensfeil. Den antatte frekvensfeil for målverdien med den største magnitude blir gitt som den estimerte frekvensfeil. For rammesynkronisering fremskaffes en korrelasjonsverdi for hver OFDM symbolperiode ved å korrelere målverdier fremskaffet for NC (feks. det nyeste) OFDM symbolperioder med NC forventede verdier. De forventede verdier regnes ut på en måte som er konsistent med måten p'a hvilken målverdiene regnes ut på. Toppdeteksjon utføres på korrelasjonsverdier fremskaffet for forskjellige OFDM symbolperioder for å bestemme rammesynkronisering.
NO20063570A 2004-01-08 2006-08-07 Frekvensfeilestimering og rammesynkronisering i et OFMD-system NO20063570L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/754,796 US7746760B2 (en) 2004-01-08 2004-01-08 Frequency error estimation and frame synchronization in an OFDM system
PCT/US2005/000400 WO2005071911A1 (en) 2004-01-08 2005-01-07 Frequency error estimation and frame synchronization in an ofdm system

Publications (1)

Publication Number Publication Date
NO20063570L true NO20063570L (no) 2006-10-06

Family

ID=34739448

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20063570A NO20063570L (no) 2004-01-08 2006-08-07 Frekvensfeilestimering og rammesynkronisering i et OFMD-system

Country Status (19)

Country Link
US (1) US7746760B2 (no)
EP (3) EP1706976B1 (no)
JP (2) JP2007518363A (no)
KR (1) KR100828389B1 (no)
CN (1) CN1930841B (no)
AR (1) AR047378A1 (no)
AT (1) ATE416549T1 (no)
AU (1) AU2005207364A1 (no)
BR (1) BRPI0506733A (no)
CA (1) CA2551988C (no)
DE (1) DE602005011400D1 (no)
IL (1) IL176703A0 (no)
NO (1) NO20063570L (no)
NZ (1) NZ548310A (no)
RU (1) RU2323537C1 (no)
TW (1) TW200601759A (no)
UA (1) UA88893C2 (no)
WO (1) WO2005071911A1 (no)
ZA (1) ZA200605628B (no)

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Also Published As

Publication number Publication date
EP1976212A1 (en) 2008-10-01
BRPI0506733A (pt) 2007-05-02
CN1930841B (zh) 2010-08-04
ZA200605628B (en) 2007-11-28
KR20060107574A (ko) 2006-10-13
IL176703A0 (en) 2006-10-31
CN1930841A (zh) 2007-03-14
EP1706976B1 (en) 2008-12-03
UA88893C2 (ru) 2009-12-10
CA2551988C (en) 2010-03-16
AR047378A1 (es) 2006-01-18
NZ548310A (en) 2008-06-30
ATE416549T1 (de) 2008-12-15
WO2005071911A1 (en) 2005-08-04
JP2007518363A (ja) 2007-07-05
US7746760B2 (en) 2010-06-29
RU2323537C1 (ru) 2008-04-27
JP2011101384A (ja) 2011-05-19
EP1706976A1 (en) 2006-10-04
AU2005207364A1 (en) 2005-08-04
EP1976211A1 (en) 2008-10-01
DE602005011400D1 (de) 2009-01-15
CA2551988A1 (en) 2005-08-04
US20050152326A1 (en) 2005-07-14
KR100828389B1 (ko) 2008-05-08
TW200601759A (en) 2006-01-01

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