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WO2008117401A1 - Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system - Google Patents

Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system Download PDF

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Publication number
WO2008117401A1
WO2008117401A1 PCT/JP2007/056251 JP2007056251W WO2008117401A1 WO 2008117401 A1 WO2008117401 A1 WO 2008117401A1 JP 2007056251 W JP2007056251 W JP 2007056251W WO 2008117401 A1 WO2008117401 A1 WO 2008117401A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmitting apparatus
radio
radio transmitting
receiving apparatus
wireless communication
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.)
Ceased
Application number
PCT/JP2007/056251
Other languages
French (fr)
Japanese (ja)
Inventor
Toshio Kawasaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to PCT/JP2007/056251 priority Critical patent/WO2008117401A1/en
Publication of WO2008117401A1 publication Critical patent/WO2008117401A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04B7/0617—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 for beam forming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

A radio transmitting apparatus (1) generates mutually orthogonal signal sequences from the same transport symbol sequence, weight adds the generated signal sequences in such a manner that generates mutually orthogonal beams (#0,#1), and transmits the weight added signal sequences in the orthogonal beams. A radio receiving apparatus demodulates the signal components of the respective orthogonal beams (#0,#1) of the signals received from the radio transmitting apparatus (1), and combines the demodulation results to reproduce the transport symbol sequence. In this way, even if the transmission antenna interval of the radio transmitting apparatus (1) is narrow, a desired diversity effect can be obtained in the radio receiving apparatus, so that the size of the radio transmitting apparatus (1) can be reduced.
PCT/JP2007/056251 2007-03-26 2007-03-26 Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system Ceased WO2008117401A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/056251 WO2008117401A1 (en) 2007-03-26 2007-03-26 Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/056251 WO2008117401A1 (en) 2007-03-26 2007-03-26 Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system

Publications (1)

Publication Number Publication Date
WO2008117401A1 true WO2008117401A1 (en) 2008-10-02

Family

ID=39788144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/056251 Ceased WO2008117401A1 (en) 2007-03-26 2007-03-26 Transmission diversity method, radio transmitting apparatus and radio receiving apparatus in wireless communication system

Country Status (1)

Country Link
WO (1) WO2008117401A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013090014A (en) * 2011-10-13 2013-05-13 Canon Inc Radio communication device, communication method, and program
JP2013519313A (en) * 2010-02-05 2013-05-23 クアルコム，インコーポレイテッド Apparatus and method for enabling uplink beamforming transit diversity
WO2014038347A1 (en) * 2012-09-07 2014-03-13 株式会社エヌ・ティ・ティ・ドコモ Wireless base station, wireless communication system, and wireless communication method
CN115499046A (en) * 2022-08-09 2022-12-20 网络通信与安全紫金山实验室 Multi-beam beam decoupling method, transmitter and receiver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000501907A (en) * 1995-12-07 2000-02-15 エリクソン インコーポレイテッド An efficient device for simultaneous modulation and digital beamforming for antenna arrays
JP2002314483A (en) * 2001-02-01 2002-10-25 Fujitsu Ltd Transmitting device, receiving device, and communication system using array antenna
JP2003514428A (en) * 1999-11-12 2003-04-15 ノキア コーポレイション Adaptive beam-time coding method and apparatus
JP2005064546A (en) * 2003-08-08 2005-03-10 Ntt Docomo Inc Signal transmission apparatus and signal transmission method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000501907A (en) * 1995-12-07 2000-02-15 エリクソン インコーポレイテッド An efficient device for simultaneous modulation and digital beamforming for antenna arrays
JP2003514428A (en) * 1999-11-12 2003-04-15 ノキア コーポレイション Adaptive beam-time coding method and apparatus
JP2002314483A (en) * 2001-02-01 2002-10-25 Fujitsu Ltd Transmitting device, receiving device, and communication system using array antenna
JP2005064546A (en) * 2003-08-08 2005-03-10 Ntt Docomo Inc Signal transmission apparatus and signal transmission method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013519313A (en) * 2010-02-05 2013-05-23 クアルコム，インコーポレイテッド Apparatus and method for enabling uplink beamforming transit diversity
US9059760B2 (en) 2010-02-05 2015-06-16 Qualcomm Incorporated Apparatus and method for enabling uplink beamforming transit diversity
JP2013090014A (en) * 2011-10-13 2013-05-13 Canon Inc Radio communication device, communication method, and program
WO2014038347A1 (en) * 2012-09-07 2014-03-13 株式会社エヌ・ティ・ティ・ドコモ Wireless base station, wireless communication system, and wireless communication method
JP2014053812A (en) * 2012-09-07 2014-03-20 Ntt Docomo Inc Radio base station, radio communication system, and radio communication method
CN115499046A (en) * 2022-08-09 2022-12-20 网络通信与安全紫金山实验室 Multi-beam beam decoupling method, transmitter and receiver

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