GB2459832B - Wireless communication apparatus - Google Patents

Wireless communication apparatus

Info

Publication number
GB2459832B
GB2459832B GB0804792A GB0804792A GB2459832B GB 2459832 B GB2459832 B GB 2459832B GB 0804792 A GB0804792 A GB 0804792A GB 0804792 A GB0804792 A GB 0804792A GB 2459832 B GB2459832 B GB 2459832B
Authority
GB
United Kingdom
Prior art keywords
wireless communication
communication 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.)
Expired - Fee Related
Application number
GB0804792A
Other versions
GB0804792D0 (en
GB2459832A (en
Inventor
Cheran Malsri Vithanage
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.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe 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 Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB0804792A priority Critical patent/GB2459832B/en
Publication of GB0804792D0 publication Critical patent/GB0804792D0/en
Publication of GB2459832A publication Critical patent/GB2459832A/en
Application granted granted Critical
Publication of GB2459832B publication Critical patent/GB2459832B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611—Means for null steering; Adaptive interference nulling
    • H01Q3/2617—Array of identical elements
    • H01Q3/2623—Array of identical elements composed of two 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
    • H04B7/0613—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
    • 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
    • H04B7/0619—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 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
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • 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
    • H04B7/0619—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 using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
GB0804792A 2008-03-14 2008-03-14 Wireless communication apparatus Expired - Fee Related GB2459832B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0804792A GB2459832B (en) 2008-03-14 2008-03-14 Wireless communication apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0804792A GB2459832B (en) 2008-03-14 2008-03-14 Wireless communication apparatus

Publications (3)

Publication Number Publication Date
GB0804792D0 GB0804792D0 (en) 2008-04-16
GB2459832A GB2459832A (en) 2009-11-11
GB2459832B true GB2459832B (en) 2010-12-01

Family

ID=39328155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0804792A Expired - Fee Related GB2459832B (en) 2008-03-14 2008-03-14 Wireless communication apparatus

Country Status (1)

Country Link
GB (1) GB2459832B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103647527A (en) * 2013-12-09 2014-03-19 中国电子科技集团公司第二十九研究所 Method of enhancing electromagnetic-pulse equivalent radiation power

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002300096A (en) * 2001-03-30 2002-10-11 Denso Corp Diversity radio equipment
US20040033787A1 (en) * 2002-08-13 2004-02-19 David Weber Method and apparatus for signal power loss reduction in RF communication systems
US20050008065A1 (en) * 1998-11-24 2005-01-13 Schilling Donald L. Multiple-input multiple-output (MIMO) spread-spectrum system and method
US20060034279A1 (en) * 2004-08-02 2006-02-16 James Cho Wireless communication using beam forming and diversity
WO2006094255A1 (en) * 2005-03-02 2006-09-08 Qualcomm Incorporated Radiated power control for a multi-antenna transmission
US20070046539A1 (en) * 2005-08-31 2007-03-01 Tzero Technologies, Inc. Average EIRP control of multiple antenna transmission signals
US20070077968A1 (en) * 2005-09-30 2007-04-05 Alexandr Kuzminskiy Increasing the range of access point cells for a given throughput in a downlink of a wireless local area network

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050008065A1 (en) * 1998-11-24 2005-01-13 Schilling Donald L. Multiple-input multiple-output (MIMO) spread-spectrum system and method
JP2002300096A (en) * 2001-03-30 2002-10-11 Denso Corp Diversity radio equipment
US20040033787A1 (en) * 2002-08-13 2004-02-19 David Weber Method and apparatus for signal power loss reduction in RF communication systems
US20060034279A1 (en) * 2004-08-02 2006-02-16 James Cho Wireless communication using beam forming and diversity
WO2006094255A1 (en) * 2005-03-02 2006-09-08 Qualcomm Incorporated Radiated power control for a multi-antenna transmission
US20070046539A1 (en) * 2005-08-31 2007-03-01 Tzero Technologies, Inc. Average EIRP control of multiple antenna transmission signals
US20070077968A1 (en) * 2005-09-30 2007-04-05 Alexandr Kuzminskiy Increasing the range of access point cells for a given throughput in a downlink of a wireless local area network

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Kuzminskiy "EIRP-restricted downlink beamforming in WLAN OFDM systems" *
Zetterberg "Downlink beamforming with delayed channel estimates under total power, element power and equivalent isotropic radiated power (EIRP) constraints" *
Zetterberg "Performance of multiple-receive multiple-transmit beamforming in WLAN-type systems under power or EIRP constraints with delayed channel estimates" *

Also Published As

Publication number Publication date
GB0804792D0 (en) 2008-04-16
GB2459832A (en) 2009-11-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130314