GB0902742D0 - Wireless communications methods and apparatus - Google Patents

Wireless communications methods and apparatus

Info

Publication number
GB0902742D0
GB0902742D0 GB0902742A GB0902742A GB0902742D0 GB 0902742 D0 GB0902742 D0 GB 0902742D0 GB 0902742 A GB0902742 A GB 0902742A GB 0902742 A GB0902742 A GB 0902742A GB 0902742 D0 GB0902742 D0 GB 0902742D0
Authority
GB
United Kingdom
Prior art keywords
wireless communications
communications methods
methods
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.)
Withdrawn
Application number
GB0902742A
Other versions
GB2467916A (en
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 GB0902742A priority Critical patent/GB2467916A/en
Publication of GB0902742D0 publication Critical patent/GB0902742D0/en
Publication of GB2467916A publication Critical patent/GB2467916A/en
Withdrawn legal-status Critical Current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
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • 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
    • H04B7/0613—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0011—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to payload information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
GB0902742A 2009-02-18 2009-02-18 Vector perturbation multi-antennae multi-user communication using a power scaling matrix Withdrawn GB2467916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0902742A GB2467916A (en) 2009-02-18 2009-02-18 Vector perturbation multi-antennae multi-user communication using a power scaling matrix

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0902742A GB2467916A (en) 2009-02-18 2009-02-18 Vector perturbation multi-antennae multi-user communication using a power scaling matrix

Publications (2)

Publication Number Publication Date
GB0902742D0 true GB0902742D0 (en) 2009-04-01
GB2467916A GB2467916A (en) 2010-08-25

Family

ID=40548409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0902742A Withdrawn GB2467916A (en) 2009-02-18 2009-02-18 Vector perturbation multi-antennae multi-user communication using a power scaling matrix

Country Status (1)

Country Link
GB (1) GB2467916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114172774A (en) * 2021-10-27 2022-03-11 西安电子科技大学广州研究院 Industrial Internet of things equipment power distribution method based on outdated gradient feedback

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014107888A1 (en) * 2013-01-11 2014-07-17 华为技术有限公司 Transmission method and base station for downlink multiple-input multiple-output

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101005233B1 (en) * 2007-03-14 2010-12-31 더 보드 오브 리전츠 오브 더 유니버시티 오브 텍사스 시스템 Apparatus and method for interference cancellation in multi-antenna system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114172774A (en) * 2021-10-27 2022-03-11 西安电子科技大学广州研究院 Industrial Internet of things equipment power distribution method based on outdated gradient feedback
CN114172774B (en) * 2021-10-27 2023-08-01 西安电子科技大学广州研究院 Industrial Internet of things equipment power distribution method based on outdated gradient feedback

Also Published As

Publication number Publication date
GB2467916A (en) 2010-08-25

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)