NO953064L - Radiostasjoner for et mobilradiosystem med romdelt multiplekstilgang (SDMA) - Google Patents

Radiostasjoner for et mobilradiosystem med romdelt multiplekstilgang (SDMA)

Info

Publication number
NO953064L
NO953064L NO953064A NO953064A NO953064L NO 953064 L NO953064 L NO 953064L NO 953064 A NO953064 A NO 953064A NO 953064 A NO953064 A NO 953064A NO 953064 L NO953064 L NO 953064L
Authority
NO
Norway
Prior art keywords
sdma
room
mobile radio
multiplex access
sharing multiplex
Prior art date
Application number
NO953064A
Other languages
English (en)
Other versions
NO953064D0 (no
Inventor
Michael Tangemann
Rupert Rheinschmitt
Bernd X Weis
Original Assignee
Alcatel Nv
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 Alcatel Nv filed Critical Alcatel Nv
Publication of NO953064D0 publication Critical patent/NO953064D0/no
Publication of NO953064L publication Critical patent/NO953064L/no

Links

Classifications

    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Relay Systems (AREA)

Abstract

For kompleks veiing av. sendesignaler og mottatte signåler i en radiostasjon i et mobilradiosystem med romdelt multiplekstilgang {SDMA - Space Division Multiple Access), er det fra før kjent kompliserte anordninger som ved hjelp av atnplitudeveiing og faseforskyvning endrer signalene på mellomfrekvensnivået. Det foreslås derfor en enkel radiostasjon (BTS) for SDMA-radiosendinger, som i sin senderdel har et modula- tortrinn (MOD) og en styrekrets (CTR) forbundet med dette,som ved forutbestemmelse av komplekse vekttall (*lf ..., *N, a1( ..., aN) påvirker modulasjonen på sådan måte at modula- tortrinnet frembringer N modulerte og komplekst veiede sendesignaler. Disse sender radiostasjonen (BTS) ut over en gruppeantenne med N elementer, hvorved sendesignalene overlagres til et radiosignal (S) som sendes ut i en gitt retning. For mottagningsretningen foreslås en mottagerdel som arbeider etter det samme prinsipp.
NO953064A 1994-08-05 1995-08-04 Radiostasjoner for et mobilradiosystem med romdelt multiplekstilgang (SDMA) NO953064L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4427755A DE4427755A1 (de) 1994-08-05 1994-08-05 Ortsfeste oder mobile Funkstation für ein SDMA-Mobilfunksystem

Publications (2)

Publication Number Publication Date
NO953064D0 NO953064D0 (no) 1995-08-04
NO953064L true NO953064L (no) 1996-02-06

Family

ID=6525003

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953064A NO953064L (no) 1994-08-05 1995-08-04 Radiostasjoner for et mobilradiosystem med romdelt multiplekstilgang (SDMA)

Country Status (6)

Country Link
EP (1) EP0696112B1 (no)
AT (1) ATE279817T1 (no)
AU (1) AU699049B2 (no)
DE (2) DE4427755A1 (no)
FI (1) FI953724A (no)
NO (1) NO953064L (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3204111B2 (ja) * 1996-08-28 2001-09-04 松下電器産業株式会社 指向性制御アンテナ装置
FI101918B (fi) * 1996-12-20 1998-09-15 Nokia Telecommunications Oy SDMA:ia käyttävä pakettiradiojärjestelmä ja menetelmä muodostaa kanava
US5887267A (en) * 1997-04-04 1999-03-23 Ericsson Inc. Bus arbitrators for common local oscillators in cellular radiotelephone base stations
DE19724087A1 (de) * 1997-06-07 1998-12-10 Fraunhofer Ges Forschung Sende- und Empfangsgerät für Hochfrequenzstrahlung und Verfahren zur Hochfrequenz-Übertragung
SE511907C2 (sv) 1997-10-01 1999-12-13 Ericsson Telefon Ab L M Integrerad kommunikationsanordning
SE511911C2 (sv) * 1997-10-01 1999-12-13 Ericsson Telefon Ab L M Antennenhet med en flerskiktstruktur
DE19747366C2 (de) * 1997-10-27 1999-08-12 Siemens Ag Verfahren, Basisstation, Empfangseinrichtung und Mobilstation zur Übertragung von Nutzinformationen und Signalisierungsinformationen für ein Mobil-Kommunikationssystem
DE10122696C2 (de) * 2001-05-10 2003-06-18 Siemens Ag Sendeverfahren zur Übertragung eines nicht-kontunuierlich gesendeten Mobilfunkkanals sowie Mobilfunk-Basisstation und Mobilfunknetz
DE10145366A1 (de) * 2001-09-14 2003-04-03 Siemens Ag Verfahren zum Ermitteln sendeortspezifischer Sendesignale unter Berücksichtigu ng quellenspezifischer Gütekriterien
US20030109282A1 (en) * 2001-12-06 2003-06-12 Itzhak Shperling Method and base station for providing phase-shift transmit diversity

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383332A (en) * 1980-11-21 1983-05-10 Bell Telephone Laboratories, Incorporated High capacity digital mobile radio system
JPS6124338A (ja) * 1984-07-12 1986-02-03 Nec Corp 多方向多重通信方式
DE3704201A1 (de) * 1987-02-11 1988-09-01 Bbc Brown Boveri & Cie Kurzwellen-dipolgruppen
US5031193A (en) * 1989-11-13 1991-07-09 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals
JP2684888B2 (ja) * 1991-08-06 1997-12-03 国際電信電話株式会社 アダプティブアレイアンテナ制御方式
DE4134357A1 (de) * 1991-10-17 1993-04-22 Standard Elektrik Lorenz Ag Nachrichtenuebertragungssystem
US5515378A (en) * 1991-12-12 1996-05-07 Arraycomm, Inc. Spatial division multiple access wireless communication systems
US5274844A (en) * 1992-05-11 1993-12-28 Motorola, Inc. Beam pattern equalization method for an adaptive array
US5305353A (en) * 1992-05-29 1994-04-19 At&T Bell Laboratories Method and apparatus for providing time diversity
US5289499A (en) * 1992-12-29 1994-02-22 At&T Bell Laboratories Diversity for direct-sequence spread spectrum systems

Also Published As

Publication number Publication date
DE4427755A1 (de) 1996-02-08
FI953724A (fi) 1996-02-06
AU699049B2 (en) 1998-11-19
EP0696112A3 (de) 2000-05-10
FI953724A0 (fi) 1995-08-04
EP0696112A2 (de) 1996-02-07
DE59510960D1 (de) 2004-11-18
AU2711795A (en) 1996-02-15
EP0696112B1 (de) 2004-10-13
NO953064D0 (no) 1995-08-04
ATE279817T1 (de) 2004-10-15

Similar Documents

Publication Publication Date Title
AU1705799A (en) Radio transmission from a communication station with an antenna array to providea desirable radiation pattern
CA2126987A1 (en) Power amplifier linearization in a tdma mobile radio system
EP0773638A1 (en) Method and apparatus to implement antenna diversity for direct sequence spread spectrum receivers
KR940017330A (ko) 통신방법 및 시스템
TW358268B (en) Method of and apparatus for interference rejection combining and downlink beamforming in a cellular radiocommunications system
BR9608879A (pt) Sistema de comunicação de acesso múltiplo por divisão de frequéncia e código ortogonal duplo
WO1998019481A3 (en) Method and apparatus for providing high speed data communications in a cellular environment
CA2347478A1 (en) Receiver in a wireless communications system for receiving signals having combined orthogonal transmit diversity and adaptive array techniques
AU6948400A (en) Method and apparatus for beamforming in a wireless communication system
MX9602585A (es) Disposicion de direccion de haz de enlace descendente de antena.
CA2300129A1 (en) Method and arrangement for radio transmission of data
EP0620658A4 (en) MULTIPLE ACCESS MOBILE COMMUNICATION SYSTEM BY CODE DIFFERENCE.
MX9701970A (es) Sistema de arreglo celular masivo.
AU6835098A (en) Data transmission in a mobile network
NO953064L (no) Radiostasjoner for et mobilradiosystem med romdelt multiplekstilgang (SDMA)
CA2267367A1 (en) Mobile station with down-link frame numbering
JPS55143854A (en) Mobile radio space diversity system using optical fiber
SE9500170D0 (sv) System and method for load reduction in a mobile communication system and a mobile communication system
WO1999065168A3 (en) Data carrier including a circuit with time slot determination means and time slot fixation means
EP0479744B1 (en) A method for reducing the risk of poor reception in a mobile telephony system
SE9203335D0 (sv) Radiomodul ingaaende i en primaer radiostation jaemte radiostruktur innehaallande saadana moduler
SE9603596D0 (sv) Radiotelefonanordning utförande av rumsdiversitetsmottagning för att kommunicera med basstationer i ett TDMA-radiokommunikationssystem
ATE236497T1 (de) Flexibles frequenz-zeitduplex in funkübertragungssystemen
EP0729240A3 (en) Code division multiple access cellular mobile radio systems
JPS5531311A (en) Direct trunk setting system for multi-channel radio communication system

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application