CA2642893C - System, apparatus, and method for asymmetrical beamforming with equal-power transmissions - Google Patents

System, apparatus, and method for asymmetrical beamforming with equal-power transmissions Download PDF

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Publication number
CA2642893C
CA2642893C CA2642893A CA2642893A CA2642893C CA 2642893 C CA2642893 C CA 2642893C CA 2642893 A CA2642893 A CA 2642893A CA 2642893 A CA2642893 A CA 2642893A CA 2642893 C CA2642893 C CA 2642893C
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CA
Canada
Prior art keywords
beamforming
power
channel
technique
transmitter
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.)
Active
Application number
CA2642893A
Other languages
English (en)
French (fr)
Other versions
CA2642893A1 (en
Inventor
Monisha Ghosh
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CA2642893A1 publication Critical patent/CA2642893A1/en
Application granted granted Critical
Publication of CA2642893C publication Critical patent/CA2642893C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • 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
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation 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
    • H04B7/0615—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
    • H04B7/0634—Antenna weights or vector/matrix coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
CA2642893A 2006-02-22 2007-02-20 System, apparatus, and method for asymmetrical beamforming with equal-power transmissions Active CA2642893C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US77558906P 2006-02-22 2006-02-22
US60/775,589 2006-02-22
US80947406P 2006-05-30 2006-05-30
US60/809,474 2006-05-30
PCT/IB2007/050546 WO2007096820A1 (en) 2006-02-22 2007-02-20 System, apparatus, and method for asymmetrical beamforming with equal-power transmissions

Publications (2)

Publication Number Publication Date
CA2642893A1 CA2642893A1 (en) 2007-08-30
CA2642893C true CA2642893C (en) 2015-06-23

Family

ID=38137586

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2642893A Active CA2642893C (en) 2006-02-22 2007-02-20 System, apparatus, and method for asymmetrical beamforming with equal-power transmissions

Country Status (12)

Country Link
US (1) US8190211B2 (enExample)
EP (1) EP1989791B1 (enExample)
JP (1) JP5210178B2 (enExample)
KR (1) KR101443569B1 (enExample)
AR (1) AR059861A1 (enExample)
AU (1) AU2007219200B2 (enExample)
BR (1) BRPI0707993B1 (enExample)
CA (1) CA2642893C (enExample)
MY (1) MY153443A (enExample)
RU (1) RU2426232C2 (enExample)
TW (1) TWI433484B (enExample)
WO (1) WO2007096820A1 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
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JP2921236B2 (ja) 1992-02-12 1999-07-19 トヨタ自動車株式会社 自動変速機の変速操作装置
US8130864B1 (en) * 2007-04-03 2012-03-06 Marvell International Ltd. System and method of beamforming with reduced feedback
US8165543B2 (en) * 2007-04-25 2012-04-24 Marvell World Trade Ltd. Power amplifier adjustment for transmit beamforming in multi-antenna wireless systems
KR101520667B1 (ko) * 2007-09-10 2015-05-18 엘지전자 주식회사 다중 안테나 시스템에서의 파일럿 부반송파 할당 방법
WO2009084877A1 (en) * 2007-12-28 2009-07-09 Samsung Electronics Co., Ltd. Method and apparatus for transmitting/receiving downlink data in wireless communication network
JP5463620B2 (ja) 2008-02-26 2014-04-09 日産自動車株式会社 自動変速機搭載車のシフトバイワイヤ故障時制御装置
US8582672B2 (en) 2009-02-12 2013-11-12 Futurewei Technologies, Inc. System and method for wireless communications using spatial multiplexing with incomplete channel information
US8644368B1 (en) * 2009-09-23 2014-02-04 Marvell International Ltd. Transparent implicit beamforming in a communication system
US9276722B2 (en) * 2010-05-05 2016-03-01 Qualcomm Incorporated Expanded search space for R-PDCCH in LTE-A
US9071286B2 (en) * 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US8917787B2 (en) * 2011-03-22 2014-12-23 Hitachi, Ltd. Systems and methods for creating a downlink precode for communication system with per-antenna power constraints
WO2012138971A2 (en) * 2011-04-06 2012-10-11 Sejent Corporation Measuring instantaneous bit rate in a network connection
SG11201402212SA (en) 2011-11-09 2014-09-26 Agency Science Tech & Res Addressing multiple communication terminals in a wireless communication network
KR101284935B1 (ko) 2012-06-20 2013-07-10 한국과학기술원 다중 입력 다중 출력 간섭 채널에서 ｏｕｔａｇｅ 기반의 강인 빔 설계 방법
US9661579B1 (en) 2013-05-03 2017-05-23 Marvell International Ltd. Per-tone power control in OFDM
US9843097B1 (en) 2013-07-08 2017-12-12 Marvell International Ltd. MIMO implicit beamforming techniques
US9281885B2 (en) * 2014-04-07 2016-03-08 Imagination Technologies, Llc Reordering of a beamforming matrix based on encoding
CN105429686B (zh) * 2015-11-05 2018-10-12 江苏中兴微通信息科技有限公司 分离型非对称混合波束成型的传输装置及方法
CN105306125B (zh) * 2015-11-16 2018-10-16 江苏中兴微通信息科技有限公司 非对称共享型混合波束成型收发装置
US11228987B2 (en) * 2020-04-09 2022-01-18 Motorola Mobility Llc Method and wireless communication device for sharing a total power budget between at least two transmitters

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5621752A (en) * 1994-06-23 1997-04-15 Qualcomm Incorporated Adaptive sectorization in a spread spectrum communication system
US8634481B1 (en) * 2000-11-16 2014-01-21 Alcatel Lucent Feedback technique for wireless systems with multiple transmit and receive antennas
US7813440B2 (en) * 2003-01-31 2010-10-12 Ntt Docomo, Inc. Multiple-output multiple-input (MIMO) communication system, MIMO receiver and MIMO receiving method
JP4413540B2 (ja) * 2003-01-31 2010-02-10 株式会社エヌ・ティ・ティ・ドコモ 多入力多出力伝搬路信号伝送装置及び受信局
JP4039413B2 (ja) * 2003-11-05 2008-01-30 ソニー株式会社 無線通信システム及び無線通信方法、並びに無線通信装置
US7680461B2 (en) 2003-11-05 2010-03-16 Sony Corporation Wireless communications system, wireless communications method, and wireless communications apparatus
US7362822B2 (en) 2004-09-08 2008-04-22 Intel Corporation Recursive reduction of channel state feedback
US7539253B2 (en) 2004-09-10 2009-05-26 Intel Corporation Interpolation in channel state feedback

Also Published As

Publication number Publication date
KR20080098037A (ko) 2008-11-06
MY153443A (en) 2015-02-13
TW200742310A (en) 2007-11-01
AU2007219200A1 (en) 2007-08-30
EP1989791A1 (en) 2008-11-12
WO2007096820A1 (en) 2007-08-30
AU2007219200B2 (en) 2011-02-17
BRPI0707993A2 (pt) 2011-05-17
AR059861A1 (es) 2008-05-07
RU2008137643A (ru) 2010-03-27
BRPI0707993B1 (pt) 2020-02-18
US20090221241A1 (en) 2009-09-03
RU2426232C2 (ru) 2011-08-10
JP5210178B2 (ja) 2013-06-12
JP2009527973A (ja) 2009-07-30
TWI433484B (zh) 2014-04-01
US8190211B2 (en) 2012-05-29
KR101443569B1 (ko) 2014-09-23
CA2642893A1 (en) 2007-08-30
EP1989791B1 (en) 2016-08-24

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