DE69825658D1 - Symbolsynchronisierung in Mehrträgerempfänger - Google Patents

Symbolsynchronisierung in Mehrträgerempfänger

Info

Publication number
DE69825658D1
DE69825658D1 DE69825658T DE69825658T DE69825658D1 DE 69825658 D1 DE69825658 D1 DE 69825658D1 DE 69825658 T DE69825658 T DE 69825658T DE 69825658 T DE69825658 T DE 69825658T DE 69825658 D1 DE69825658 D1 DE 69825658D1
Authority
DE
Germany
Prior art keywords
symbol synchronization
carrier receivers
receivers
carrier
synchronization
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69825658T
Other languages
English (en)
Other versions
DE69825658T2 (de
Inventor
Jonathan Highton Stott
Adrian Paul Robinson
Christopher K P Clarke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
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 British Broadcasting Corp filed Critical British Broadcasting Corp
Application granted granted Critical
Publication of DE69825658D1 publication Critical patent/DE69825658D1/de
Publication of DE69825658T2 publication Critical patent/DE69825658T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03025—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception using a two-tap delay line
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • 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
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0087—Out-of-band signals, (e.g. pilots)
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • 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
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
DE69825658T 1997-05-02 1998-05-01 Symbolchronisierung in Mehrträgerempfängern Expired - Lifetime DE69825658T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9709063.3A GB9709063D0 (en) 1997-05-02 1997-05-02 Improvements to OFDM symbol synchronization
GB9709063 1997-05-02

Publications (2)

Publication Number Publication Date
DE69825658D1 true DE69825658D1 (de) 2004-09-23
DE69825658T2 DE69825658T2 (de) 2005-07-14

Family

ID=10811798

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69825658T Expired - Lifetime DE69825658T2 (de) 1997-05-02 1998-05-01 Symbolchronisierung in Mehrträgerempfängern
DE69826336T Expired - Lifetime DE69826336T2 (de) 1997-05-02 1998-05-01 Symbolsynchronisierung in Mehrträgerempfänger
DE69826337T Expired - Lifetime DE69826337T2 (de) 1997-05-02 1998-05-01 Symbolsynchronisierung in Mehrträgerempfänger

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69826336T Expired - Lifetime DE69826336T2 (de) 1997-05-02 1998-05-01 Symbolsynchronisierung in Mehrträgerempfänger
DE69826337T Expired - Lifetime DE69826337T2 (de) 1997-05-02 1998-05-01 Symbolsynchronisierung in Mehrträgerempfänger

Country Status (5)

Country Link
US (1) US6320915B1 (de)
EP (3) EP0876031B1 (de)
DE (3) DE69825658T2 (de)
ES (3) ES2226066T3 (de)
GB (2) GB9709063D0 (de)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361157B (en) * 1997-05-02 2001-12-05 British Broadcasting Corp Improvements to OFDM symbol synchronization
GB9709063D0 (en) * 1997-05-02 1997-06-25 British Broadcasting Corp Improvements to OFDM symbol synchronization
US6407995B1 (en) * 1997-08-14 2002-06-18 Lucent Technologies Inc. Independently switched voice and data calls using a single PSTN line connection
JP2000115263A (ja) * 1998-09-30 2000-04-21 Matsushita Electric Ind Co Ltd ディジタル放送復調装置
GB9901491D0 (en) 1999-01-22 1999-03-17 Univ Bristol Receiver
US6611567B1 (en) * 1999-01-29 2003-08-26 Agere Systems, Inc. Method and apparatus for pulse shaping
US6650264B1 (en) * 1999-03-10 2003-11-18 Cirrus Logic, Inc. Quadrature sampling architecture and method for analog-to-digital converters
EP1416694B1 (de) * 1999-06-16 2006-09-20 Sony Deutschland GmbH Optimierte Synchronisierungspräambelstruktur für OFDM-System
GB2353680A (en) 1999-08-27 2001-02-28 Mitsubishi Electric Inf Tech OFDM frame synchronisation
DE60032553T2 (de) * 1999-10-13 2007-10-04 Alps Electric Co., Ltd. OFDM Empfangsvorrichtung
JP3789275B2 (ja) * 2000-02-28 2006-06-21 三菱電機株式会社 副搬送波周波数信号復調装置
US6704377B1 (en) * 2000-03-10 2004-03-09 Lucent Technologies Inc. Method of correcting frequency errors for coherently demodulated wireless communication systems
JP3448007B2 (ja) * 2000-03-30 2003-09-16 パナソニック コミュニケーションズ株式会社 モデム装置及び通信装置並びに通信制御方法
JP3448008B2 (ja) * 2000-03-30 2003-09-16 パナソニック コミュニケーションズ株式会社 モデム装置及び通信装置並びに通信制御方法
EP1150470A3 (de) * 2000-04-27 2004-06-23 Alps Electric Co., Ltd. OFDM Empfangseinrichtung
CA2352398C (en) * 2000-07-06 2005-07-26 Unique Broadband Systems, Inc. Low phase noise frequency converter
GB2364865B (en) * 2000-07-12 2004-01-21 Conexant Systems Inc Receiver circuit
US7580488B2 (en) * 2000-11-29 2009-08-25 The Penn State Research Foundation Broadband modulation/demodulation apparatus and a method thereof
US6839388B2 (en) 2001-01-22 2005-01-04 Koninklijke Philips Electronics N.V. System and method for providing frequency domain synchronization for single carrier signals
US20020172183A1 (en) * 2001-05-17 2002-11-21 Josef Eichinger Method and device for transmitting data in radio channels with strong multipath propagation and increased data volume in a radio communication system
EP1609283A1 (de) * 2003-03-28 2005-12-28 Intel Corporation Verfahren und vorrichtung zur ofdm-symboltaktsynchronisierung
WO2004086709A1 (en) * 2003-03-28 2004-10-07 Intel Corporation System and method for adaptive phase compensation of ofdm signals
CN1846415B (zh) * 2003-03-28 2010-08-04 英特尔公司 用于ofdm信号的两信道频偏估计的系统和方法
US7366243B1 (en) * 2003-10-29 2008-04-29 Itt Manufacturing Enterprises, Inc. Methods and apparatus for transmitting non-contiguous spread spectrum signals for communications and navigation
US7251497B2 (en) * 2003-12-31 2007-07-31 Infineon Technologies Ag Signal-to-interference ratio estimation for CDMA
US7298772B1 (en) * 2004-09-03 2007-11-20 Redpine Signals, Inc. Packet detection, symbol timing, and coarse frequency estimation in an OFDM communications system
US7822100B2 (en) * 2005-07-28 2010-10-26 Itt Manufacturing Enterprises, Inc. Phase mapping for QPSK/QBL-MSK waveform
US7733983B2 (en) * 2005-11-14 2010-06-08 Ibiquity Digital Corporation Symbol tracking for AM in-band on-channel radio receivers
US9042482B2 (en) * 2012-03-23 2015-05-26 Intel Mobile Communications GmbH FBR DC vector offset removal using LO phase switching
FR3102620B1 (fr) 2019-10-24 2022-12-23 St Microelectronics Grenoble 2 Convertisseur de tension
FR3113140B1 (fr) 2020-07-30 2022-12-23 St Microelectronics Grenoble 2 Convertisseur de tension
FR3113142B1 (fr) 2020-07-30 2022-12-23 St Microelectronics Grenoble 2 Convertisseur de tension

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983498A (en) * 1975-11-13 1976-09-28 Motorola, Inc. Digital phase lock loop
GB9218874D0 (en) * 1992-09-07 1992-10-21 British Broadcasting Corp Improvements relating to the transmission of frequency division multiplex signals
DE69427099T2 (de) * 1993-01-20 2001-11-08 Koninkl Philips Electronics Nv Übertragungssystem mit Taktrückgewinnung
SE500986C2 (sv) 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
US5444697A (en) 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
JP3041175B2 (ja) 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
US5450456A (en) 1993-11-12 1995-09-12 Daimler Benz Ag Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
JP3074103B2 (ja) 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
SE514809C2 (sv) * 1994-07-13 2001-04-30 Hd Divine Ab Metod och anordning för synkronisering av sändare och mottagare i digitalt system
GB2340003B (en) * 1994-12-15 2000-03-22 Inmarsat Ltd Multiplex communication
SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
GB2306084B (en) * 1995-10-30 2000-02-16 British Broadcasting Corp Correlation of OFDM signals
EP0772332A3 (de) * 1995-11-02 2000-10-11 British Broadcasting Corporation Synchronisierung von OFDM-Signalen
GB2307155B (en) 1995-11-02 1999-09-15 British Broadcasting Corp Synchronisation of OFDM signals
FI104142B (fi) * 1996-10-25 1999-11-15 Nokia Mobile Phones Ltd Radioresurssien käytön ohjausmenetelmä
SE9703630L (sv) 1997-03-03 1998-09-04 Telia Ab Förbättringar av, eller med avseende på, synkronisering
GB9709063D0 (en) 1997-05-02 1997-06-25 British Broadcasting Corp Improvements to OFDM symbol synchronization

Also Published As

Publication number Publication date
ES2227390T3 (es) 2005-04-01
EP1267538A1 (de) 2002-12-18
DE69825658T2 (de) 2005-07-14
DE69826337T2 (de) 2005-10-27
GB9709063D0 (en) 1997-06-25
US6320915B1 (en) 2001-11-20
EP0876031B1 (de) 2004-08-18
GB2325825A (en) 1998-12-02
EP1267539B1 (de) 2004-09-15
GB2325825B (en) 2001-09-12
GB9809462D0 (en) 1998-07-01
DE69826336D1 (de) 2004-10-21
EP1267539A1 (de) 2002-12-18
ES2226066T3 (es) 2005-03-16
ES2227391T3 (es) 2005-04-01
EP1267538B1 (de) 2004-09-15
EP0876031A3 (de) 2002-03-13
DE69826336T2 (de) 2005-10-20
EP0876031A2 (de) 1998-11-04
DE69826337D1 (de) 2004-10-21

Similar Documents

Publication Publication Date Title
DE69825658D1 (de) Symbolsynchronisierung in Mehrträgerempfänger
DE60029687D1 (de) Symboltaktsynchronisierung in Mehrträgerempfängern
DE69929742D1 (de) Symbolsynchronisierung in einem OFDM-Empfänger
DE29521458U1 (de) Rahmensynchronisation in Mehrträger-Übertragungssystemen
DE69933594D1 (de) Verbesserungen der Zeitsynchronisierung in verteilten Systemen
IS4900A (is) Samfasa jafnaðarbúnaður
DE69833354D1 (de) Synchronisierung des Trägers in einem Mehrträgerempfänger
DE69739340D1 (de) Symbolsynchronisierung für Mehrträgersignalen mit Schutzintervall
DE69737353D1 (de) Synchronisierung in digitalen Kommunikationssystemen
ZA979317B (en) Slot machine with symbol save feature.
PL343241A1 (en) Ofdm receiving system
DE69818875D1 (de) Feine Einrastung des FFT-Fensters in Mehrträgerempfängern
IL130671A0 (en) Multicarrier receiver
DE69737220D1 (de) Synchronisationsgerät
DK1072137T3 (da) Grovfrekvenssynkronisering i multibæresystemer
ATE216854T1 (de) Speisenträger
GB0208805D0 (en) OFDM symbol synchronisation
DE841787T1 (de) Synchronisierung in einem Mehrträgerempfänger
DE59901779D1 (de) Brotschneidemaschine
GB2361157B (en) Improvements to OFDM symbol synchronization
DE69933801D1 (de) Verbesserungen der Zeitsynchronisierung in verteilten Systemen
FI981226A0 (fi) Symbolisynkronointimenetelmä
FI981207A (fi) Demodulaatiomenetelmä
SE9800343D0 (sv) Multicarriersystem
DE29806935U1 (de) Symbolauswahlgerät

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: 2K PATENTANWAELTE BLASBERG KEWITZ & REICHEL, PARTN