CA2285198C - Procede de transmission en parallele - Google Patents

Procede de transmission en parallele Download PDF

Info

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]

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
KR20090113915A (ko) * 2007-03-06 2009-11-02 미쓰비시덴키 가부시키가이샤 무선 통신 시스템
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
JP6424168B2 (ja) * 2012-12-21 2018-11-14 サムスン エレクトロニクス カンパニー リミテッド 通信システムにおける信号を送受信する方法及び装置

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

Similar Documents

Publication Publication Date Title
US6122083A (en) Mobile communication system having a small base station and equipment for its system
EP2421172B1 (fr) Architecture sans fil distribuée faisant appel à la micro-diffusion
US7656969B2 (en) Dual payload and adaptive modulation
CA2245240C (fr) Methode et appareil servant a ameliorer la reception de communication a un terminal de transmission sans fil
US6091715A (en) Hybrid radio transceiver for wireless networks
US4506383A (en) Method and apparatus for relaying signals between a ground station and a satellite using a ground relay station
US5809422A (en) Distributed microcellular communications system
JP2626514B2 (ja) 基地局送受信装置
US6370185B1 (en) Translating repeater system with improved backhaul efficiency
KR100331406B1 (ko) 이동전화시스템에서인접채널구비조건을완화하기위한다이버시티송신의사용
US6396823B1 (en) Base station transceiver for frequency hopping code division multiple access system
JPS6242537B2 (fr)
US20040042390A1 (en) Dithering scheme using multiple antennas for OFDM systems
US20030090993A1 (en) OFDM Transmitting and receiving apparatus
AU711362B2 (en) Communication system for multicasting delay-adjusted signals on same radio frequencies to adjoining cells
CN110677186A (zh) 一种基于载波分裂的卫星通信抗干扰方法
US11343700B2 (en) Spectrum management for a point-to-multipoint wireless network
JPH05327569A (ja) ダイバーシチ送受信方式
AU677691B2 (en) Base station equipment using diversity reception
CA2285198C (fr) Procede de transmission en parallele
KR20050122795A (ko) 직교주파수다중접속 통신 시스템에서 보호구간 설정 방법및 장치
JP2000261405A (ja) ダイバーシティ送受信機
AT&T Paper Title (use style: paper title)
JPS6062739A (ja) 衛星塔載装置
Chen et al. Demonstration of analog millimeter-wave fronthaul link for 64-qam lte signal transmission

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20110107