WO2005050892A3 - Method and apparatus for automatic frequency correction - Google Patents

Method and apparatus for automatic frequency correction Download PDF

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Publication number
WO2005050892A3
WO2005050892A3 PCT/US2004/038153 US2004038153W WO2005050892A3 WO 2005050892 A3 WO2005050892 A3 WO 2005050892A3 US 2004038153 W US2004038153 W US 2004038153W WO 2005050892 A3 WO2005050892 A3 WO 2005050892A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
local oscillator
frequency correction
automatic frequency
frequency error
Prior art date
Application number
PCT/US2004/038153
Other languages
French (fr)
Other versions
WO2005050892A2 (en
Inventor
Donald M Grieco
Original Assignee
Interdigital Tech Corp
Bultan Aykut
Donald M Grieco
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 Interdigital Tech Corp, Bultan Aykut, Donald M Grieco filed Critical Interdigital Tech Corp
Publication of WO2005050892A2 publication Critical patent/WO2005050892A2/en
Publication of WO2005050892A3 publication Critical patent/WO2005050892A3/en

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
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/02—Algorithm used as input for AFC action alignment receiver

Abstract

The present invention is related to a method and apparatus for automatic frequency correction of a local oscillator. The apparatus receives a carrier signal. The carrier signal includes a code sequence known to the apparatus. The apparatus downconverts the carrier signal to a baseband signal using the local oscillator. The apparatus performs a block correlation of the samples of the baseband signal with the known code sequence to generate a frequency error signal. The frequency error signal is fed back to the local oscillator to correct the frequency error.
PCT/US2004/038153 2003-11-18 2004-11-13 Method and apparatus for automatic frequency correction WO2005050892A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52305103P 2003-11-18 2003-11-18
US60/523,051 2003-11-18

Publications (2)

Publication Number Publication Date
WO2005050892A2 WO2005050892A2 (en) 2005-06-02
WO2005050892A3 true WO2005050892A3 (en) 2005-11-10

Family

ID=34619561

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/038153 WO2005050892A2 (en) 2003-11-18 2004-11-13 Method and apparatus for automatic frequency correction

Country Status (5)

Country Link
US (4) US7058378B2 (en)
CN (1) CN1922806A (en)
AR (1) AR047125A1 (en)
TW (3) TWI251990B (en)
WO (1) WO2005050892A2 (en)

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US20090135799A1 (en) * 2007-11-27 2009-05-28 Harris Corporation Wireless communications device including path searcher with common coherent correlator and related methods
US7990929B2 (en) * 2007-11-27 2011-08-02 Harris Corporation Wireless communications device including rake finger stage providing frequency correction and related methods
US7933256B2 (en) * 2008-02-27 2011-04-26 Qualcomm Incorporated Coherent single antenna interference cancellation for GSM/GPRS/EDGE
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US9237515B2 (en) * 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
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US8787509B2 (en) * 2009-06-04 2014-07-22 Qualcomm Incorporated Iterative interference cancellation receiver
US20120163222A1 (en) * 2009-08-14 2012-06-28 Tariqul Islam System and method for locating a wireless device in a wimax network using uplink signals
US8619928B2 (en) * 2009-09-03 2013-12-31 Qualcomm Incorporated Multi-stage interference suppression
US8831149B2 (en) * 2009-09-03 2014-09-09 Qualcomm Incorporated Symbol estimation methods and apparatuses
JP6091895B2 (en) 2009-11-27 2017-03-08 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Increased capacity in wireless communications
ES2708959T3 (en) 2009-11-27 2019-04-12 Qualcomm Inc Greater capacity in wireless communications
CN102136850B (en) 2010-01-27 2014-04-30 中兴通讯股份有限公司 Method and device for realizing automatic frequency control
TWI462539B (en) * 2012-03-06 2014-11-21 Mstar Semiconductor Inc Method of frequency adjustment
US8873682B2 (en) * 2012-09-28 2014-10-28 Broadcom Corporation Hybrid AFC using DCXO and RF PLL
US9166750B1 (en) * 2013-03-08 2015-10-20 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Soft decision analyzer and method
CN103235293A (en) * 2013-03-25 2013-08-07 深圳市华儒科技有限公司 Method and device for frequency correction
EP3646041A4 (en) 2017-06-26 2021-02-17 INTEL Corporation Frequency estimation
CN111245472B (en) * 2020-04-26 2020-08-04 杭州城芯科技有限公司 Radio frequency transceiver chip, and synchronization system and method for radio frequency transceiver chip

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US20040019603A1 (en) * 2002-05-29 2004-01-29 Honeywell International Inc. System and method for automatically generating condition-based activity prompts

Also Published As

Publication number Publication date
US20080125070A1 (en) 2008-05-29
US20050107061A1 (en) 2005-05-19
CN1922806A (en) 2007-02-28
TWI251990B (en) 2006-03-21
TWI390864B (en) 2013-03-21
US20070032213A1 (en) 2007-02-08
US7509108B2 (en) 2009-03-24
TW200947897A (en) 2009-11-16
US7299023B2 (en) 2007-11-20
TW200618505A (en) 2006-06-01
AR047125A1 (en) 2006-01-11
US20090176459A1 (en) 2009-07-09
WO2005050892A2 (en) 2005-06-02
US7058378B2 (en) 2006-06-06
US7778619B2 (en) 2010-08-17
TW200524303A (en) 2005-07-16

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