SE464551B - Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem - Google Patents

Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem

Info

Publication number
SE464551B
SE464551B SE8902993A SE8902993A SE464551B SE 464551 B SE464551 B SE 464551B SE 8902993 A SE8902993 A SE 8902993A SE 8902993 A SE8902993 A SE 8902993A SE 464551 B SE464551 B SE 464551B
Authority
SE
Sweden
Prior art keywords
antennas
phase
fixed station
time
radio communication
Prior art date
Application number
SE8902993A
Other languages
English (en)
Swedish (sv)
Other versions
SE8902993D0 (enExample
SE8902993L (sv
Inventor
S Dahlin
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE8902993A priority Critical patent/SE464551B/sv
Publication of SE8902993D0 publication Critical patent/SE8902993D0/xx
Priority to PCT/SE1990/000496 priority patent/WO1991004615A1/en
Priority to CA002041647A priority patent/CA2041647A1/en
Priority to AU63308/90A priority patent/AU624270B2/en
Priority to JP2512446A priority patent/JPH04503138A/ja
Priority to KR1019910700461A priority patent/KR920702105A/ko
Priority to FI912176A priority patent/FI912176A7/fi
Priority to EP90850273A priority patent/EP0419429A1/en
Priority to MYPI90001308A priority patent/MY105932A/en
Priority to IE300290A priority patent/IE903002A1/en
Priority to CN90107704A priority patent/CN1050293A/zh
Publication of SE8902993L publication Critical patent/SE8902993L/xx
Publication of SE464551B publication Critical patent/SE464551B/sv
Priority to NO91911813A priority patent/NO911813L/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
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • 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
    • H04B7/0682—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 using phase diversity (e.g. phase sweeping)
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0676—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 delayed versions of same signal using random or pseudo-random delays

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Radio Relay Systems (AREA)
SE8902993A 1989-09-12 1989-09-12 Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem SE464551B (sv)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE8902993A SE464551B (sv) 1989-09-12 1989-09-12 Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem
EP90850273A EP0419429A1 (en) 1989-09-12 1990-07-19 Method of reducing the risk for poor reception in a time multiplexed radio communication system
FI912176A FI912176A7 (fi) 1989-09-12 1990-07-19 Menetelmä huonon vastaanoton vaaran vähentämiseksi aikamultipleksoidus sa radiotietoliikennejärjestelmässä
CA002041647A CA2041647A1 (en) 1989-09-12 1990-07-19 Method of reducing the risk for poor reception in a time multiplexed radio communication system
AU63308/90A AU624270B2 (en) 1989-09-12 1990-07-19 Method of reducing the risk for poor reception in a time multiplexed radio communication system
JP2512446A JPH04503138A (ja) 1989-09-12 1990-07-19 時多重化無線通信システムにおける受信不良の危険の低減方法
KR1019910700461A KR920702105A (ko) 1989-09-12 1990-07-19 시분할 다중 무선 통신시스템에서 바람직하지 못한 수신의 위험을 줄이는 방법
PCT/SE1990/000496 WO1991004615A1 (en) 1989-09-12 1990-07-19 Method of reducing the risk for poor reception in a time multiplexed radio communication system
MYPI90001308A MY105932A (en) 1989-09-12 1990-08-06 Method of reducing the risk for poor reception in a time multiplexed radio communication system.
IE300290A IE903002A1 (en) 1989-09-12 1990-08-20 Method of reducing the risk for poor reception in a time¹multi-plexed radio communication system
CN90107704A CN1050293A (zh) 1989-09-12 1990-09-12 时分多路复用无线电通信系统中减少收信质量变差的风险的方法
NO91911813A NO911813L (no) 1989-09-12 1991-05-10 Fremgangsmaate for aa redusere risikoen for daarlig mottaking i et tidsmultiplekset radiokommunikasjonssystem.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8902993A SE464551B (sv) 1989-09-12 1989-09-12 Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem

Publications (3)

Publication Number Publication Date
SE8902993D0 SE8902993D0 (enExample) 1989-09-12
SE8902993L SE8902993L (sv) 1991-03-13
SE464551B true SE464551B (sv) 1991-05-06

Family

ID=20376855

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8902993A SE464551B (sv) 1989-09-12 1989-09-12 Foerfarande foer att minska risken foer daalig mottagning i ett tidsmultiplext radiokommunikationssystem

Country Status (11)

Country Link
EP (1) EP0419429A1 (enExample)
JP (1) JPH04503138A (enExample)
KR (1) KR920702105A (enExample)
CN (1) CN1050293A (enExample)
AU (1) AU624270B2 (enExample)
CA (1) CA2041647A1 (enExample)
FI (1) FI912176A7 (enExample)
IE (1) IE903002A1 (enExample)
MY (1) MY105932A (enExample)
SE (1) SE464551B (enExample)
WO (1) WO1991004615A1 (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5602834A (en) * 1990-12-07 1997-02-11 Qualcomm Incorporated Linear coverage area antenna system for a CDMA communication system
US5513176A (en) * 1990-12-07 1996-04-30 Qualcomm Incorporated Dual distributed antenna system
SE514000C2 (sv) * 1992-04-29 2000-12-11 Telia Ab Förfarande och anordning för att minska fädningen mellan basstation och mobila enheter
US5305353A (en) * 1992-05-29 1994-04-19 At&T Bell Laboratories Method and apparatus for providing time diversity
SE470371B (sv) * 1992-06-23 1994-01-31 Ericsson Telefon Ab L M Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler
FI934875A7 (fi) * 1993-11-04 1995-05-05 Nokia Telecommunications Oy Menetelmä radiotaajuisten signaalien lähettämiseksi sekä TDMA-lähetinvastaanotin
US5515366A (en) * 1994-11-17 1996-05-07 International Business Machines Corporation Method and apparatus for direct communication in a TDMA radio communication system
US5649287A (en) * 1995-03-29 1997-07-15 Telefonaktiebolaget Lm Ericsson Orthogonalizing methods for antenna pattern nullfilling
SE518010C2 (sv) * 1995-07-20 2002-08-13 Telia Ab Antennanordning
RU2143123C1 (ru) * 1998-09-02 1999-12-20 Ооо "Спирит Корп" Устройство определения высокоточного относительного местоположения движущегося объекта по сигналам спутниковых радионавигационных систем
US6847658B1 (en) 1998-12-10 2005-01-25 Qualcomm, Incorporated Demultiplexer for channel interleaving
US6925067B2 (en) 1999-04-23 2005-08-02 Qualcomm, Incorporated Configuration of overhead channels in a mixed bandwidth system
SE516105C2 (sv) * 1999-06-11 2001-11-19 Allgon Ab En metod för att styra strålningsmönstret hos en antenn, ett antennsystem och en radiokommunikationsanordning
DE10142404B4 (de) * 2001-08-31 2005-09-08 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zur Funkübertragung von digitalen Nachrichtensignalen
JP3997890B2 (ja) 2001-11-13 2007-10-24 松下電器産業株式会社 送信方法及び送信装置
US7356089B2 (en) * 2003-09-05 2008-04-08 Nortel Networks Limited Phase offset spatial multiplexing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815341A (ja) * 1981-07-22 1983-01-28 Nec Corp 送信ダイバーシティ信号の送信方法および装置

Also Published As

Publication number Publication date
CA2041647A1 (en) 1991-03-13
SE8902993D0 (enExample) 1989-09-12
SE8902993L (sv) 1991-03-13
AU624270B2 (en) 1992-06-04
IE903002A1 (en) 1991-03-27
MY105932A (en) 1995-02-28
FI912176A0 (fi) 1991-05-06
JPH04503138A (ja) 1992-06-04
AU6330890A (en) 1991-04-18
CN1050293A (zh) 1991-03-27
WO1991004615A1 (en) 1991-04-04
EP0419429A1 (en) 1991-03-27
FI912176A7 (fi) 1991-05-06
KR920702105A (ko) 1992-08-12

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