NO20001224L - Fremgangsmõte for datasending, samt radiosystem - Google Patents

Fremgangsmõte for datasending, samt radiosystem

Info

Publication number
NO20001224L
NO20001224L NO20001224A NO20001224A NO20001224L NO 20001224 L NO20001224 L NO 20001224L NO 20001224 A NO20001224 A NO 20001224A NO 20001224 A NO20001224 A NO 20001224A NO 20001224 L NO20001224 L NO 20001224L
Authority
NO
Norway
Prior art keywords
signal
modulation method
data transmission
radio system
psk
Prior art date
Application number
NO20001224A
Other languages
English (en)
Other versions
NO20001224D0 (no
Inventor
Olli Piirainen
Kari Niemelo
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Publication of NO20001224L publication Critical patent/NO20001224L/no
Publication of NO20001224D0 publication Critical patent/NO20001224D0/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0032—Without explicit signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Oppfinnelsen angår en fremgangsmåte for datasending og et radiosystem. Spesielt angår oppfinnelsen en fremgangsmåte og et system hvor både GMSK- modulasjonsmetoden og m-PSK-modulasjonsmetoden er tilgjengelige for signalet som skal sendes, og hvor den modulasjonsmetode som benyttes på et gitt tids- punkt, kan forandres til en annen modulasjonsmetode. l løsningen ifølge oppfin- nelsen omfatter senderens m-PSK-modulator en multipliserer (602) innrettet for å multiplisere signalet som skal sendes, med en gitt koeffisient som gjør det mot- tatte signalets signal-konstellasjoner like, uansett modulasjonsmetode. Behandlin- gen av signalet i mottakeren blir således enklere, og kvaliteten av overføringen forbedres i forbindelse med m-PSK-modulasjonen.
NO20001224A 1998-07-10 2000-03-09 FremgangsmÕte for datasending, samt radiosystem NO20001224D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI981589A FI106327B (fi) 1998-07-10 1998-07-10 Tiedonsiirtomenetelmä ja radiojärjestelmä
PCT/FI1999/000606 WO2000003523A1 (en) 1998-07-10 1999-07-08 Data transmission method and radio system

Publications (2)

Publication Number Publication Date
NO20001224L true NO20001224L (no) 2000-03-09
NO20001224D0 NO20001224D0 (no) 2000-03-09

Family

ID=8552177

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20001224A NO20001224D0 (no) 1998-07-10 2000-03-09 FremgangsmÕte for datasending, samt radiosystem

Country Status (8)

Country Link
US (1) US6658067B1 (no)
EP (1) EP1013040A1 (no)
JP (1) JP2002520951A (no)
CN (1) CN1273728A (no)
AU (1) AU755312B2 (no)
FI (1) FI106327B (no)
NO (1) NO20001224D0 (no)
WO (1) WO2000003523A1 (no)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1035660B1 (en) * 1999-01-05 2008-02-27 Motorola, Inc. Portable communication device
DE10042352A1 (de) * 2000-08-29 2002-03-28 Siemens Ag Verfahren zur Verbesserung der Sprachqualität in einem Mobilfunknetz
EP1274183A1 (en) 2001-07-05 2003-01-08 Alcatel Data transmission method employing different modulation schemes on radio communication channels
JP3555943B2 (ja) * 2002-02-27 2004-08-18 松下電器産業株式会社 無線受信装置、変調方式判定方法および符号化方式判定方法
SE521746C2 (sv) * 2002-04-05 2003-12-02 Ericsson Telefon Ab L M Multimoduleringssändare
GB2387515A (en) 2002-04-08 2003-10-15 Ipwireless Inc Mapping bits to at least two channels using two interleavers, one for systematic bits, and the other for parity bits
US7245672B2 (en) * 2002-06-27 2007-07-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for phase-domain semi-coherent demodulation
KR20040076501A (ko) * 2003-02-26 2004-09-01 학교법인 한양학원 통신용 펄스를 이용한 ｐｓｋ 변조 방법 및 장치
US7471928B2 (en) * 2003-09-08 2008-12-30 Telefonaktiebolaget Lm Ericsson (Publ) Modulation scheme management
US7719376B2 (en) * 2003-12-04 2010-05-18 St-Ericsson Sa Avoidance of discontinuities when switching between modulation schemes
US7145966B2 (en) * 2004-06-30 2006-12-05 Qualcomm, Incorporated Signal quality estimation for continuous phase modulation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660131B1 (fr) 1990-03-23 1992-06-19 France Etat Dispositif de transmissions de donnees numeriques a au moins deux niveaux de protection, et dispositif de reception correspondant.
US5311545A (en) * 1991-06-17 1994-05-10 Hughes Aircraft Company Modem for fading digital channels affected by multipath
US5497401A (en) * 1994-11-18 1996-03-05 Thomson Consumer Electronics, Inc. Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
US5796783A (en) * 1995-10-31 1998-08-18 Andre Alain Tabourian Digital transmission system
US5960040A (en) * 1996-12-05 1999-09-28 Raytheon Company Communication signal processors and methods
US6061549A (en) * 1997-02-20 2000-05-09 Telefonaktiebolaget L M Ericsson Support of multiple modulation levels for a cellular traffic channel
US5909469A (en) 1997-08-29 1999-06-01 Telefonaktoebolaget Lm Ericsson Link adaptation method for links using modulation schemes that have different symbol rates

Also Published As

Publication number Publication date
FI981589A0 (fi) 1998-07-10
US6658067B1 (en) 2003-12-02
AU5041699A (en) 2000-02-01
EP1013040A1 (en) 2000-06-28
JP2002520951A (ja) 2002-07-09
FI106327B (fi) 2001-01-15
NO20001224D0 (no) 2000-03-09
FI981589A (fi) 2000-01-11
WO2000003523A1 (en) 2000-01-20
AU755312B2 (en) 2002-12-12
CN1273728A (zh) 2000-11-15

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