IT1318161B1 - Metodo e dispositivo per il recupero di portante in sistemi ofdm - Google Patents

Metodo e dispositivo per il recupero di portante in sistemi ofdm

Info

Publication number
IT1318161B1
IT1318161B1 IT2000MI001589A ITMI20001589A IT1318161B1 IT 1318161 B1 IT1318161 B1 IT 1318161B1 IT 2000MI001589 A IT2000MI001589 A IT 2000MI001589A IT MI20001589 A ITMI20001589 A IT MI20001589A IT 1318161 B1 IT1318161 B1 IT 1318161B1
Authority
IT
Italy
Prior art keywords
recovery
carrier
ofdm systems
ofdm
systems
Prior art date
Application number
IT2000MI001589A
Other languages
English (en)
Inventor
Roberto Valtolina
Marco Gallibariggio
Arnaldo Spalvieri
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Priority to IT2000MI001589A priority Critical patent/IT1318161B1/it
Publication of ITMI20001589A0 publication Critical patent/ITMI20001589A0/it
Priority to EP01401781A priority patent/EP1172983A3/en
Priority to US09/902,781 priority patent/US20020031081A1/en
Priority to NO20013484A priority patent/NO20013484L/no
Publication of ITMI20001589A1 publication Critical patent/ITMI20001589A1/it
Application granted granted Critical
Publication of IT1318161B1 publication Critical patent/IT1318161B1/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3455—Modifications of the signal space to allow the transmission of additional information in order to facilitate carrier recovery at the receiver end, e.g. by transmitting a pilot or by using additional signal points to allow the detection of rotations
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
IT2000MI001589A 2000-07-14 2000-07-14 Metodo e dispositivo per il recupero di portante in sistemi ofdm IT1318161B1 (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT2000MI001589A IT1318161B1 (it) 2000-07-14 2000-07-14 Metodo e dispositivo per il recupero di portante in sistemi ofdm
EP01401781A EP1172983A3 (en) 2000-07-14 2001-07-04 Carrier recovery in multicarrier systems
US09/902,781 US20020031081A1 (en) 2000-07-14 2001-07-12 Method and device for carrier recovery in OFDM systems
NO20013484A NO20013484L (no) 2000-07-14 2001-07-13 Fremgangsmåte og innretning for b¶rebölgegjenvinning i OFDM- systemer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000MI001589A IT1318161B1 (it) 2000-07-14 2000-07-14 Metodo e dispositivo per il recupero di portante in sistemi ofdm

Publications (3)

Publication Number Publication Date
ITMI20001589A0 ITMI20001589A0 (it) 2000-07-14
ITMI20001589A1 ITMI20001589A1 (it) 2002-01-14
IT1318161B1 true IT1318161B1 (it) 2003-07-23

Family

ID=11445469

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2000MI001589A IT1318161B1 (it) 2000-07-14 2000-07-14 Metodo e dispositivo per il recupero di portante in sistemi ofdm

Country Status (4)

Country Link
US (1) US20020031081A1 (it)
EP (1) EP1172983A3 (it)
IT (1) IT1318161B1 (it)
NO (1) NO20013484L (it)

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US6987752B1 (en) * 1999-09-15 2006-01-17 Lucent Technologies Inc. Method and apparatus for frequency offset estimation and interleaver synchronization using periodic signature sequences
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
JP3860762B2 (ja) * 2002-02-14 2006-12-20 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム、チャネル同期確立方法、及び移動局
US7433298B1 (en) 2002-08-19 2008-10-07 Marvell International Ltd. Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US20060088112A1 (en) * 2004-09-08 2006-04-27 Das Suvra S Process and a system for transmission of data
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US20080107222A1 (en) * 2006-11-06 2008-05-08 L3 Communications Integrated Systems, L.P. System and method for signal phase correction
US9893927B2 (en) * 2010-04-08 2018-02-13 Cometch EF Data Corp. Embedded meta-carrier with spread spectrum via overlaid carriers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6125150A (en) * 1995-10-30 2000-09-26 The Board Of Trustees Of The Leland Stanford, Junior University Transmission system using code designed for transmission with periodic interleaving
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
US5953311A (en) * 1997-02-18 1999-09-14 Discovision Associates Timing synchronization in a receiver employing orthogonal frequency division multiplexing
KR100314353B1 (ko) * 1998-04-28 2001-12-28 전주범 직교분할대역수신시스템
DE69940235D1 (de) * 1998-05-26 2009-02-26 Panasonic Corp Modulator, Demodulator, und Übertragungssystem für OFDM-Übertragung
US6373861B1 (en) * 1998-12-01 2002-04-16 Samsung Electronics Co, Ltd. Frequency synchronizing device for OFDM/CDMA system
US6449246B1 (en) * 1999-09-15 2002-09-10 Telcordia Technologies, Inc. Multicarrier personal access communication system
US6650617B1 (en) * 2000-02-22 2003-11-18 Thomson Licensing S.A. Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system
US6549561B2 (en) * 2001-02-21 2003-04-15 Magis Networks, Inc. OFDM pilot tone tracking for wireless LAN

Also Published As

Publication number Publication date
ITMI20001589A0 (it) 2000-07-14
NO20013484D0 (no) 2001-07-13
NO20013484L (no) 2002-01-15
EP1172983A3 (en) 2005-06-29
ITMI20001589A1 (it) 2002-01-14
US20020031081A1 (en) 2002-03-14
EP1172983A2 (en) 2002-01-16

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