CA2285198C - Procede de transmission en parallele - Google Patents

Procede de transmission en parallele Download PDF

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Publication number
CA2285198C
CA2285198C CA002285198A CA2285198A CA2285198C CA 2285198 C CA2285198 C CA 2285198C CA 002285198 A CA002285198 A CA 002285198A CA 2285198 A CA2285198 A CA 2285198A CA 2285198 C CA2285198 C CA 2285198C
Authority
CA
Canada
Prior art keywords
different
modulation methods
carriers
qam
fsk
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 - Fee Related
Application number
CA002285198A
Other languages
English (en)
Other versions
CA2285198A1 (fr
Inventor
Yasunori Suzuki
Toshio Nojima
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.)
NTT Docomo Inc
Original Assignee
NTT Mobile Communications Networks Inc
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 NTT Mobile Communications Networks Inc filed Critical NTT Mobile Communications Networks Inc
Publication of CA2285198A1 publication Critical patent/CA2285198A1/fr
Application granted granted Critical
Publication of CA2285198C publication Critical patent/CA2285198C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les intervalles (120, 125) entre les spectres (11, 112, 113) d'ondes porteuses sont supérieurs à la largeur de bande cohérente, ou voisins de celle-ci, de sorte que les ondes porteuses peuvent recevoir des mises en phase corrélatives mutuelles. Il s'ensuit que dans le cas où le spectre (112) reçoit une mise en phase par une onde porteuse spécifique au cours d'une communication, et que la qualité de la ligne s'en trouve dégradée, la communication peut être poursuivie au moyen des autres spectres (11, 113). Dans ce cas, les autres signaux reçus sont détectés de manière synchrone et combinés par une méthode composite de rapport maximum, de sorte que les porteuses peuvent être considérées indépendamment les unes des autres. De cette façon, il est possible d'obtenir une diversité de réception selon une méthode composite de rapport maximum pour les branchements dont le nombre est égal au nombre de porteuses utilisées pour la communication. Du fait que les intervalles entre les fréquences sont réglés en utilisant des techniques de circuits existantes, de telle façon que les porteuses soient presque mutuellement en corrélation, aucun circuit radio à caractéristiques de fréquence large bande, ni processeur pour traitement de signaux numériques à degré élevé n'est nécessaire.
CA002285198A 1998-01-09 1999-01-07 Procede de transmission en parallele Expired - Fee Related CA2285198C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP00352598A JP3507683B2 (ja) 1998-01-09 1998-01-09 並列伝送方法
JP003,525/1998 1998-01-09
PCT/JP1999/000022 WO1999035772A1 (fr) 1998-01-09 1999-01-07 Procede de transmission en parallele

Publications (2)

Publication Number Publication Date
CA2285198A1 CA2285198A1 (fr) 1999-07-15
CA2285198C true CA2285198C (fr) 2006-03-21

Family

ID=11559805

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002285198A Expired - Fee Related CA2285198C (fr) 1998-01-09 1999-01-07 Procede de transmission en parallele

Country Status (3)

Country Link
JP (1) JP3507683B2 (fr)
CA (1) CA2285198C (fr)
WO (1) WO1999035772A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545990B1 (en) * 1999-12-20 2003-04-08 Tantivy Communications, Inc. Method and apparatus for a spectrally compliant cellular communication system
US8463255B2 (en) 1999-12-20 2013-06-11 Ipr Licensing, Inc. Method and apparatus for a spectrally compliant cellular communication system
US6660226B1 (en) * 2000-08-07 2003-12-09 Murata Manufacturing Co., Ltd. Lead free solder and soldered article
EP2129069A4 (fr) * 2007-03-06 2013-10-16 Mitsubishi Electric Corp Système de communication radio
JP5348042B2 (ja) * 2010-03-26 2013-11-20 富士通株式会社 マルチキャリア通信方法及びマルチキャリア通信システム及びそれに使用される基地局
EP2936755B1 (fr) * 2012-12-21 2020-05-13 Samsung Electronics Co., Ltd. Procédé et appareil de transmission/réception d'un signal dans un système de communication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05110489A (ja) * 1991-10-16 1993-04-30 Canon Inc 無線通信装置
JP3431785B2 (ja) * 1996-12-24 2003-07-28 シャープ株式会社 直交周波数多重変調信号復調装置

Also Published As

Publication number Publication date
JP3507683B2 (ja) 2004-03-15
CA2285198A1 (fr) 1999-07-15
JPH11205260A (ja) 1999-07-30
WO1999035772A1 (fr) 1999-07-15

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Effective date: 20110107