BR112012022758A2 - métodos para reduzir interferência em comunicação - Google Patents

métodos para reduzir interferência em comunicação

Info

Publication number
BR112012022758A2
BR112012022758A2 BR112012022758A BR112012022758A BR112012022758A2 BR 112012022758 A2 BR112012022758 A2 BR 112012022758A2 BR 112012022758 A BR112012022758 A BR 112012022758A BR 112012022758 A BR112012022758 A BR 112012022758A BR 112012022758 A2 BR112012022758 A2 BR 112012022758A2
Authority
BR
Brazil
Prior art keywords
methods
quantized
interference
reduce communication
communication interference
Prior art date
Application number
BR112012022758A
Other languages
English (en)
Inventor
Chae Chan-Byoung
Calin Doru
Yang Kai
Yiu Simon
Original Assignee
Alcatel Lucent
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 Alcatel Lucent filed Critical Alcatel Lucent
Publication of BR112012022758A2 publication Critical patent/BR112012022758A2/pt

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
    • H04B7/0615—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
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • 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
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam 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
    • H04B7/0617—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
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • 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
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Noise Elimination (AREA)

Abstract

métodos para reduzir interferência em comunicação modalidades de exemplo são dirigidas para métodos de redução de interferência em um sistema de comunicação . um método inclui receber , por um transmissor , primeira e segunda matrizes quantizadas partir de uma estação móvel. a primeira e segunda matrizes quantizadas são baseadas em uma matriz de uma canal estimada e uma matriz de interferência estimada. o método inclui ainda determinar , pelo transmissor, um vetor de formação de feixe de transmissão baseado no primeiro e segundo valores quantizados.
BR112012022758A 2010-03-10 2011-02-14 métodos para reduzir interferência em comunicação BR112012022758A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/659,471 US9048907B2 (en) 2010-03-10 2010-03-10 Methods for reducing interference in communication systems
PCT/US2011/024684 WO2011112314A1 (en) 2010-03-10 2011-02-14 Methods for reducing interference in communication systems

Publications (1)

Publication Number Publication Date
BR112012022758A2 true BR112012022758A2 (pt) 2018-05-22

Family

ID=44059066

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012022758A BR112012022758A2 (pt) 2010-03-10 2011-02-14 métodos para reduzir interferência em comunicação

Country Status (8)

Country Link
US (1) US9048907B2 (pt)
EP (1) EP2545659A1 (pt)
JP (1) JP2013522960A (pt)
KR (1) KR101487222B1 (pt)
CN (1) CN102792607A (pt)
BR (1) BR112012022758A2 (pt)
TW (1) TWI467938B (pt)
WO (1) WO2011112314A1 (pt)

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US8428629B2 (en) * 2010-03-31 2013-04-23 Qualcomm Incorporated Methods and apparatus for determining a communications mode and/or using a determined communications mode
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US9497765B2 (en) * 2011-08-17 2016-11-15 Qualcomm Incorporated Network coordination for improved interference cancellation
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EP2949140B1 (en) * 2013-01-23 2017-04-19 Telefonaktiebolaget LM Ericsson (publ) Method and network node for mitigation of interference
US9325540B2 (en) 2013-04-10 2016-04-26 Marvell World Trade Ltd. Method and apparatus for mitigating interference in a wireless network through use of transmit beamforming
US10320459B2 (en) 2013-04-10 2019-06-11 Marvell World Trade Ltd. Method and apparatus for mitigating interference in a wireless network through use of transmit beamforming
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US9414285B2 (en) * 2014-06-30 2016-08-09 Qualcomm Incorporated Handover with integrated antenna beam training in wireless networks
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Also Published As

Publication number Publication date
KR20120138804A (ko) 2012-12-26
CN102792607A (zh) 2012-11-21
US20110223867A1 (en) 2011-09-15
EP2545659A1 (en) 2013-01-16
TWI467938B (zh) 2015-01-01
TW201212558A (en) 2012-03-16
JP2013522960A (ja) 2013-06-13
KR101487222B1 (ko) 2015-01-28
WO2011112314A1 (en) 2011-09-15
US9048907B2 (en) 2015-06-02

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