ATE377878T1 - Verfahren zur mc-cdma abwärtsrichtstrahlbildung, wobei die gewichtungen der antennenelemente benutzer- und frequenzindividuell sind und zur maximierung des signals zur interferenz und rauschverhältnisses angepasst werden - Google Patents

Verfahren zur mc-cdma abwärtsrichtstrahlbildung, wobei die gewichtungen der antennenelemente benutzer- und frequenzindividuell sind und zur maximierung des signals zur interferenz und rauschverhältnisses angepasst werden

Info

Publication number
ATE377878T1
ATE377878T1 AT02292189T AT02292189T ATE377878T1 AT E377878 T1 ATE377878 T1 AT E377878T1 AT 02292189 T AT02292189 T AT 02292189T AT 02292189 T AT02292189 T AT 02292189T AT E377878 T1 ATE377878 T1 AT E377878T1
Authority
AT
Austria
Prior art keywords
user
antenna element
cdma
maximize
adjusted
Prior art date
Application number
AT02292189T
Other languages
English (en)
Inventor
Thomas Saelzer
Original Assignee
Mitsubishi Electric Inf Tech
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 Mitsubishi Electric Inf Tech filed Critical Mitsubishi Electric Inf Tech
Application granted granted Critical
Publication of ATE377878T1 publication Critical patent/ATE377878T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • 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
    • H04B7/12—Frequency diversity
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA]
    • H04L5/026—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA] using code division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)
AT02292189T 2002-09-05 2002-09-05 Verfahren zur mc-cdma abwärtsrichtstrahlbildung, wobei die gewichtungen der antennenelemente benutzer- und frequenzindividuell sind und zur maximierung des signals zur interferenz und rauschverhältnisses angepasst werden ATE377878T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02292189A EP1396956B1 (de) 2002-09-05 2002-09-05 Verfahren zur MC-CDMA Abwärtsrichtstrahlbildung, wobei die Gewichtungen der Antennenelemente benutzer- und frequenzindividuell sind und zur Maximierung des Signals zur Interferenz und Rauschverhältnisses angepasst werden

Publications (1)

Publication Number Publication Date
ATE377878T1 true ATE377878T1 (de) 2007-11-15

Family

ID=31502836

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02292189T ATE377878T1 (de) 2002-09-05 2002-09-05 Verfahren zur mc-cdma abwärtsrichtstrahlbildung, wobei die gewichtungen der antennenelemente benutzer- und frequenzindividuell sind und zur maximierung des signals zur interferenz und rauschverhältnisses angepasst werden

Country Status (6)

Country Link
US (1) US7336636B2 (de)
EP (1) EP1396956B1 (de)
JP (1) JP4299081B2 (de)
CN (1) CN100539461C (de)
AT (1) ATE377878T1 (de)
DE (1) DE60223367T2 (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1511206B1 (de) * 2003-09-01 2012-12-19 Mitsubishi Electric R&D Centre Europe B.V. Verfahren zur Zuweisung von einer oder mehreren Spreizfolgen an Benutzer eines MCCDMA Übertragungsnetzwerks
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8169889B2 (en) 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US7447268B2 (en) 2004-03-31 2008-11-04 Intel Corporation OFDM system with per subcarrier phase rotation
US8923785B2 (en) * 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US8285226B2 (en) * 2004-05-07 2012-10-09 Qualcomm Incorporated Steering diversity for an OFDM-based multi-antenna communication system
US7110463B2 (en) 2004-06-30 2006-09-19 Qualcomm, Incorporated Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system
US7978649B2 (en) 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
WO2006014142A1 (en) * 2004-08-03 2006-02-09 Agency For Science, Technology And Research Method for detecting a signal, detector and computer program product
US7978778B2 (en) 2004-09-03 2011-07-12 Qualcomm, Incorporated Receiver structures for spatial spreading with space-time or space-frequency transmit diversity
FR2875658B1 (fr) * 2004-09-21 2007-03-02 Commissariat Energie Atomique Estimation du rapport signal a interference plus bruit en sortie d'un recepteur ofdm-cdma.
EP1813041A4 (de) * 2004-11-10 2014-01-22 Unwired Planet Llc Verfahren und vorrichtung zur verringerung der spitzenleistung in abwärtsstrecken-steuerkanälen mit codemultiplex
US8670493B2 (en) 2005-06-22 2014-03-11 Eices Research, Inc. Systems and/or methods of increased privacy wireless communications
KR100718999B1 (ko) * 2005-07-13 2007-05-16 엘지전자 주식회사 플라즈마 디스플레이 패널
KR100719000B1 (ko) * 2005-07-13 2007-05-16 엘지전자 주식회사 플라즈마 디스플레이 패널
US8064424B2 (en) * 2005-07-22 2011-11-22 Qualcomm Incorporated SDMA for WCDMA
US8855704B2 (en) 2005-08-26 2014-10-07 Qualcomm Incorporated Fast cell selection in TD-CDMA (UMTS TDD)
US8619884B2 (en) * 2005-09-02 2013-12-31 Qualcomm Incorporated Communication channel estimation
CN100358261C (zh) * 2005-09-13 2007-12-26 北京交通大学 一种阵列天线mc－cdma系统上行链路接收方法
US8130727B2 (en) 2005-10-27 2012-03-06 Qualcomm Incorporated Quasi-orthogonal allocation of codes in TD-CDMA systems
US8068464B2 (en) 2005-10-27 2011-11-29 Qualcomm Incorporated Varying scrambling/OVSF codes within a TD-CDMA slot to overcome jamming effect by a dominant interferer
CN100391129C (zh) * 2006-01-17 2008-05-28 凯明信息科技股份有限公司 码分多址系统中降低干扰的方法
CN100388648C (zh) * 2006-01-17 2008-05-14 凯明信息科技股份有限公司 码分多址系统中用于降低接收干扰的装置
CN100391130C (zh) * 2006-01-17 2008-05-28 凯明信息科技股份有限公司 码分多址系统中降低干扰的方法
CN100388649C (zh) * 2006-01-17 2008-05-14 凯明信息科技股份有限公司 利用权值序列对信号序列进行加权处理的装置
KR101218495B1 (ko) * 2006-02-21 2013-01-18 삼성전자주식회사 직교 주파수 분할 다중화/시분할 듀플렉스 방식의 이동통신시스템에서 상향링크 사전등화를 위한 하향링크 채널변화에 따른 적응채널 예측 장치 및 방법
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US8290089B2 (en) 2006-05-22 2012-10-16 Qualcomm Incorporated Derivation and feedback of transmit steering matrix
US20080031369A1 (en) * 2006-06-07 2008-02-07 Li Ye Geoffrey Apparatus and methods for multi-carrier wireless access with energy spreading
US8787841B2 (en) * 2006-06-27 2014-07-22 Qualcomm Incorporated Method and system for providing beamforming feedback in wireless communication systems
US7983352B2 (en) * 2006-09-15 2011-07-19 Futurewei Technologies, Inc. Power allocation in a MIMO system without channel state information feedback
US8112038B2 (en) * 2006-09-15 2012-02-07 Futurewei Technologies, Inc. Beamforming with imperfect channel state information
WO2008129636A1 (ja) * 2007-04-12 2008-10-30 Fujitsu Limited 無線通信品質推定方法及び装置
JP5277673B2 (ja) * 2008-03-17 2013-08-28 富士通株式会社 無線通信システム及び無線通信方法並びに送信装置及び受信装置
US20110182582A1 (en) * 2009-04-15 2011-07-28 Nec Laboratories America Inc. Joint sample rate conversion and cd compensation in frequency domain for coherent polmux
CN111211807A (zh) * 2020-03-17 2020-05-29 南京凯瑞得信息科技有限公司 一种多路载波叠加多址接入方法及系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1128592A3 (de) * 2000-02-23 2003-09-17 NTT DoCoMo, Inc. Mehrträger-CDMA und Kanalschätzung

Also Published As

Publication number Publication date
JP4299081B2 (ja) 2009-07-22
CN100539461C (zh) 2009-09-09
JP2004104790A (ja) 2004-04-02
DE60223367T2 (de) 2008-02-14
DE60223367D1 (de) 2007-12-20
EP1396956B1 (de) 2007-11-07
EP1396956A1 (de) 2004-03-10
US20050030925A1 (en) 2005-02-10
CN1489404A (zh) 2004-04-14
US7336636B2 (en) 2008-02-26

Similar Documents

Publication Publication Date Title
ATE377878T1 (de) Verfahren zur mc-cdma abwärtsrichtstrahlbildung, wobei die gewichtungen der antennenelemente benutzer- und frequenzindividuell sind und zur maximierung des signals zur interferenz und rauschverhältnisses angepasst werden
JP4746243B2 (ja) データ伝送方法およびデータ伝送システム
US7751510B2 (en) Simplified channel and interference estimation with dedicated pilot tones for OFDMA
CN1868152B (zh) 用于ofdm通信系统中的发射和接收的方法和装置
ATE525839T1 (de) Pilotsignal übertragungstechnik für drahtlose mehrträgersysteme
CN1153370C (zh) 带有无线通信的通信系统内估测传输信道的方法和收发信机
ATE533245T1 (de) Ofdm kanalschätzung und -nachführung unter verwendung mehrere sendeantennen
Hessien et al. Experimental evaluation of OFDM-based underwater visible light communication system
US20100027608A1 (en) Scrambled multicarrier transmission
EP2624477A3 (de) OFDM Kommunikationsverfahren und Funkkommunikationsvorrichtung
WO2004075470A3 (en) Controlled superposition coding in multi-user communication systems
TW200627846A (en) Pilot tones in a multi-transmit OFDM system usable to capture transmitter diversity benefits
KR20090032144A (ko) 멀티 유저 가상 다중 입력 다중 출력을 구현하기 위한 방법, 장치 및 시스템
ATE333722T1 (de) Mehrträger-cdma in aufwärtsrichtung mit vorverzerrung der einzelnen träger
KR20070079934A (ko) 무선통신 시스템을 위한 주변 셀 간섭의 제거를 위한송수신 방법 및 장치
JP4740778B2 (ja) Ｏｆｄｍ無線通信システムおよび送信装置、受信装置
US20050135457A1 (en) Ultra wide bandwidth transmitter with tone grouping and spreading
US20110149902A1 (en) Apparatus and method for receiving signals in multi-carrier multiple access systems
US20180109347A1 (en) Controller, access node and aggregation node in a radio communication network
Lee CS-OFDMA: A new wireless CDD physical layer scheme
EP1170917A1 (de) Verfahren und Vorrichtung zur Bereitstellung einen OFDM in der Aufwärtsrichtung mit Zeit-Frequentez-verschachtelung
KR100243106B1 (ko) 안테나 어레이를 이용한 다중 반송파 코드 분할 다중 접속 수신기의 구조 및 신호 수신 방법
KR101124741B1 (ko) 데이터스트림 송신 전처리 방법 및 장치
ATE343270T1 (de) Mehrbenutzerdetektion in einem mc-cdma nachrichtensystem
US7835432B2 (en) Measuring noise power at wireless receivers using pilot symbol information

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties