BR9709027A - Processo para modulação de um portador de modulação e sistemas de comuniucação móvel - Google Patents

Processo para modulação de um portador de modulação e sistemas de comuniucação móvel

Info

Publication number
BR9709027A
BR9709027A BR9709027A BR9709027A BR9709027A BR 9709027 A BR9709027 A BR 9709027A BR 9709027 A BR9709027 A BR 9709027A BR 9709027 A BR9709027 A BR 9709027A BR 9709027 A BR9709027 A BR 9709027A
Authority
BR
Brazil
Prior art keywords
modulation
carrier
mobile communication
communication systems
systems
Prior art date
Application number
BR9709027A
Other languages
English (en)
Inventor
Armin Splett
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR9709027A publication Critical patent/BR9709027A/pt

Links

Classifications

    • 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
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BR9709027A 1996-05-23 1997-05-22 Processo para modulação de um portador de modulação e sistemas de comuniucação móvel BR9709027A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19620843A DE19620843B4 (de) 1996-05-23 1996-05-23 Verfahren zur Modulation eines Modulationsträgers und Mobil-Kommunikationssystem
PCT/DE1997/001030 WO1997044926A1 (de) 1996-05-23 1997-05-22 Verfahren und system zur änderung des übertragungsmodus in einem mobil-kommunikationssystem entsprechend der übertragungsqualität

Publications (1)

Publication Number Publication Date
BR9709027A true BR9709027A (pt) 1999-08-03

Family

ID=7795159

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9709027A BR9709027A (pt) 1996-05-23 1997-05-22 Processo para modulação de um portador de modulação e sistemas de comuniucação móvel

Country Status (5)

Country Link
US (1) US6343104B1 (pt)
CN (1) CN1157888C (pt)
BR (1) BR9709027A (pt)
DE (1) DE19620843B4 (pt)
WO (1) WO1997044926A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5991286A (en) * 1997-02-20 1999-11-23 Telefonaktiebolaget L M Ericsson (Publ) Support of multiple modulation levels for a cellular packet control channel
FI104527B (fi) 1997-09-17 2000-02-15 Nokia Mobile Phones Ltd Mukautuva radiolinkki
DE19805546C2 (de) * 1998-02-11 2000-02-17 Siemens Ag Verfahren und Funkstation zur Datenübertragung
DE19827028C2 (de) * 1998-06-17 2003-06-18 Siemens Ag Verfahren und Gerät zur drahtlosen Übertragung von Daten gemäß einem FSK-Verfahren, insbesondere einem GFSK-Verfahren
ATE438970T1 (de) * 2004-06-29 2009-08-15 Ericsson Telefon Ab L M Verfahren zur verarbeitung von paketbasierten daten sowie übertragung und empfang

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112288B2 (de) * 1971-03-15 1979-08-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Nachrichtenuebertragungssystem mit wenigstens zwei Endstellen zur digitalen UEbertragung von Sprache
US4495619A (en) 1981-10-23 1985-01-22 At&T Bell Laboratories Transmitter and receivers using resource sharing and coding for increased capacity
EP0112697A3 (en) * 1982-12-21 1986-02-26 Plessey Overseas Limited Priority coding system
GB8628821D0 (en) * 1986-12-02 1987-01-07 Plessey Co Plc Data transmission systems
US4785450B1 (en) * 1987-08-06 1999-10-12 Interdigital Tech Corp Apparatus and method for obtaining frequency agility in digital communication system
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
US4807253A (en) * 1987-11-13 1989-02-21 American Telephone And Telegraph Company, At&T Bell Laboratories Time-varying trellis-coded modulation formats which are robust in channels with phase variations
NZ239283A (en) 1990-08-23 1994-09-27 Ericsson Telefon Ab L M Mobile cellular radio: handoff between half rate and full rate channels according to estimated received signal quality
DE4032262C1 (pt) * 1990-10-11 1992-03-12 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
US5369637A (en) * 1991-04-03 1994-11-29 U.S. Philips Corporation Signal transmission system
PT1439679E (pt) * 1992-09-25 2009-01-27 Panasonic Corp Transmissão de portadoras múltiplas com parte simbólica e intervalo de guarda variáveis
EP0616454A1 (fr) * 1993-03-17 1994-09-21 Laboratoires D'electronique Philips S.A.S. Système de transmission numérique à multirésolution
US5381450A (en) * 1993-08-20 1995-01-10 Hitachi America, Ltd. Technique for automatically detecting the constellation size of a quadrature amplitude modulated (QAM) signal
EP0753953B1 (en) * 1995-07-12 2006-06-28 Nec Corporation Method and apparatus for multi-level quadrature amplitude modulation
US6132306A (en) * 1995-09-06 2000-10-17 Cisco Systems, Inc. Cellular communication system with dedicated repeater channels

Also Published As

Publication number Publication date
CN1157888C (zh) 2004-07-14
WO1997044926A1 (de) 1997-11-27
DE19620843A1 (de) 1997-11-27
DE19620843B4 (de) 2005-08-11
CN1220793A (zh) 1999-06-23
US6343104B1 (en) 2002-01-29

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B25A Requested transfer of rights approved

Owner name: BENQ CORPORATION (TW)

Free format text: TRANSFERIDO DE: SIEMENS AKTIENGESELLSCHAFT

B25D Requested change of name of applicant approved

Owner name: QISDA CORPORATION (TW)

Free format text: ALTERADO DE: BENQ CORPORATION

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2412 DE 28-03-2017 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.