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AU5681099A - Wireless communications system employing selective diversity transmission, method for selectively enabling diversity transmission, and a wireless telecommunications network employing the system or the method - Google Patents

Wireless communications system employing selective diversity transmission, method for selectively enabling diversity transmission, and a wireless telecommunications network employing the system or the method

Info

Publication number
AU5681099A
AU5681099A AU56810/99A AU5681099A AU5681099A AU 5681099 A AU5681099 A AU 5681099A AU 56810/99 A AU56810/99 A AU 56810/99A AU 5681099 A AU5681099 A AU 5681099A AU 5681099 A AU5681099 A AU 5681099A
Authority
AU
Australia
Prior art keywords
diversity transmission
employing
telecommunications network
selectively enabling
wireless communications
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.)
Abandoned
Application number
AU56810/99A
Inventor
William Eric Bird
Alan Triggs
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.)
Ericsson Inc
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of AU5681099A publication Critical patent/AU5681099A/en
Abandoned legal-status Critical Current

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
    • H04B7/0667—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
    • H04B7/0671—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 different delays between antennas
    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters
    • H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • H04B7/0693—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas switching off a diversity branch, e.g. to save power

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
AU56810/99A 1998-08-25 1999-08-24 Wireless communications system employing selective diversity transmission, method for selectively enabling diversity transmission, and a wireless telecommunications network employing the system or the method Abandoned AU5681099A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13937098A 1998-08-25 1998-08-25
US09139370 1998-08-25
PCT/US1999/018952 WO2000011806A1 (en) 1998-08-25 1999-08-24 Wireless communications system employing selective diversity transmission, method for selectively enabling diversity transmission, and a wireless telecommunications network employing the system or the method

Publications (1)

Publication Number Publication Date
AU5681099A true AU5681099A (en) 2000-03-14

Family

ID=22486294

Family Applications (1)

Application Number Title Priority Date Filing Date
AU56810/99A Abandoned AU5681099A (en) 1998-08-25 1999-08-24 Wireless communications system employing selective diversity transmission, method for selectively enabling diversity transmission, and a wireless telecommunications network employing the system or the method

Country Status (2)

Country Link
AU (1) AU5681099A (en)
WO (1) WO2000011806A1 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185258B1 (en) 1997-09-16 2001-02-06 At&T Wireless Services Inc. Transmitter diversity technique for wireless communications
WO1999023766A2 (en) 1997-10-31 1999-05-14 At & T Wireless Services, Inc. Maximum likelihood detection of concatenated space-time codes for wireless applications with transmitter diversity
US6188736B1 (en) 1997-12-23 2001-02-13 At&T Wireless Svcs. Inc. Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
US6459740B1 (en) 1998-09-17 2002-10-01 At&T Wireless Services, Inc. Maximum ratio transmission
US7477703B2 (en) 2000-02-22 2009-01-13 Nokia Mobile Phones, Limited Method and radio system for digital signal transmission using complex space-time codes
US6865237B1 (en) 2000-02-22 2005-03-08 Nokia Mobile Phones Limited Method and system for digital signal transmission
US6542556B1 (en) 2000-03-31 2003-04-01 Nokia Mobile Phones Ltd. Space-time code for multiple antenna transmission
US6731619B1 (en) 2000-08-02 2004-05-04 Ericsson Inc. Method and system for using one type of transmit diversity in a first time slot and a second type in an adjacent time slot
FI20002845A7 (en) 2000-12-22 2002-06-23 Nokia Corp Sending a digital signal
GB0029424D0 (en) * 2000-12-02 2001-01-17 Koninkl Philips Electronics Nv Radio communication system
US6748024B2 (en) 2001-03-28 2004-06-08 Nokia Corporation Non-zero complex weighted space-time code for multiple antenna transmission
JP2003087161A (en) 2001-09-06 2003-03-20 Ntt Docomo Inc Radio base station and radio communication control method
JP3975069B2 (en) 2001-10-25 2007-09-12 株式会社エヌ・ティ・ティ・ドコモ Radio base station and radio communication control method
US7050832B2 (en) * 2001-11-28 2006-05-23 Arraycomm Llc Variable diversity transmission in a radio communications system based on characteristics of a received signal
KR100442833B1 (en) * 2002-07-12 2004-08-02 삼성전자주식회사 Method and apparatus of multi-band RF receiver in mobile unit communication system
US7929985B2 (en) 2003-05-01 2011-04-19 Telefonaktiebolaget Lm Ericsson (Publ) Multiple antenna receiver
DE60329849D1 (en) * 2003-11-10 2009-12-10 Mitsubishi Electric Inf Tech Access control to a common transmission medium for multiple connections
GB2414365B (en) * 2004-05-19 2008-12-17 Motorola Inc Method of selecting a downlink transmit diversity technique
US9590715B2 (en) 2006-12-22 2017-03-07 Sony Corporation WCDMA power saving with transmit diversity
US8468236B2 (en) 2007-11-27 2013-06-18 Sercomm Corporation Systems and methods for providing frequency diversity in security transmitters
GB2460112A (en) * 2008-05-19 2009-11-25 Nokia Corp Controlling transmission diversity by delaying a signal on a second transmit path relative to a first transmit path
ES2354538B1 (en) * 2008-08-14 2012-01-26 Vodafone España, S.A. SYSTEM AND METHOD OF DYNAMIC SWITCHING BETWEEN TRANSMISSION OF A SINGLE ANTENNA AND MULTIPLE ANTENNAS.
US8891387B2 (en) 2010-05-03 2014-11-18 Qualcomm Incorporated UE based conditional enabling of ULTD
WO2011145990A1 (en) * 2010-05-21 2011-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Reduced power consumption in a wireless communication system while providing adequate directional radio coverage
DE102014209745A1 (en) * 2013-05-24 2014-12-11 Hirschmann Automation And Control Gmbh Wireless - RedBox with timing splitter
JP5907139B2 (en) * 2013-10-07 2016-04-20 株式会社デンソー Wireless communication device
US9686744B2 (en) * 2015-08-07 2017-06-20 Qualcomm Incorporated Detection of fades for receive diversity enablement in a fading channel
WO2017074243A1 (en) 2015-10-29 2017-05-04 Telefonaktiebolaget Lm Ericsson (Publ) First and second radio nodes and methods therein, for performing a radio communication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237706A (en) * 1989-11-03 1991-05-08 Racal Res Ltd Radio communications link with diversity
US5812935A (en) * 1993-04-17 1998-09-22 Hughes Electronics Cellular system employing base station transmit diversity according to transmission quality level
US5345600A (en) * 1993-08-31 1994-09-06 Motorola, Inc. Method and apparatus for selectively-enabled diversity signaling in a radio communications system

Also Published As

Publication number Publication date
WO2000011806A1 (en) 2000-03-02

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase