DE60133015D1 - Zyklische verzögerungsdiversität zur verringerung der intersymbolinterferenz in ofdm-systemen - Google Patents

Zyklische verzögerungsdiversität zur verringerung der intersymbolinterferenz in ofdm-systemen

Info

Publication number
DE60133015D1
DE60133015D1 DE60133015T DE60133015T DE60133015D1 DE 60133015 D1 DE60133015 D1 DE 60133015D1 DE 60133015 T DE60133015 T DE 60133015T DE 60133015 T DE60133015 T DE 60133015T DE 60133015 D1 DE60133015 D1 DE 60133015D1
Authority
DE
Germany
Prior art keywords
transmitted
symbol
intersymbol interference
cyclic delay
ofdm systems
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 - Lifetime
Application number
DE60133015T
Other languages
English (en)
Other versions
DE60133015T2 (de
Inventor
Peter Larsson
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of DE60133015D1 publication Critical patent/DE60133015D1/de
Publication of DE60133015T2 publication Critical patent/DE60133015T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B7/06—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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0671—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 delayed versions of same signal using different delays between antennas
    • 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
    • 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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0676—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 delayed versions of same signal using random or pseudo-random delays

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Transmission System (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Noise Elimination (AREA)
DE60133015T 2000-09-22 2001-08-02 Zyklische verzögerungsdiversität zur verringerung der intersymbolinterferenz in ofdm-systemen Expired - Lifetime DE60133015T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/667,504 US6842487B1 (en) 2000-09-22 2000-09-22 Cyclic delay diversity for mitigating intersymbol interference in OFDM systems
US667504 2000-09-22
PCT/SE2001/001703 WO2002025857A1 (en) 2000-09-22 2001-08-02 Cyclic delay diversity for mitigating isi in ofdm systems

Publications (2)

Publication Number Publication Date
DE60133015D1 true DE60133015D1 (de) 2008-04-10
DE60133015T2 DE60133015T2 (de) 2009-03-19

Family

ID=24678484

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60133015T Expired - Lifetime DE60133015T2 (de) 2000-09-22 2001-08-02 Zyklische verzögerungsdiversität zur verringerung der intersymbolinterferenz in ofdm-systemen

Country Status (10)

Country Link
US (1) US6842487B1 (de)
EP (1) EP1319278B1 (de)
JP (1) JP4988137B2 (de)
CN (1) CN1291563C (de)
AT (1) ATE387769T1 (de)
AU (1) AU2001280362A1 (de)
CA (1) CA2421768C (de)
DE (1) DE60133015T2 (de)
ES (1) ES2301559T3 (de)
WO (1) WO2002025857A1 (de)

Families Citing this family (157)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7952511B1 (en) 1999-04-07 2011-05-31 Geer James L Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US6937592B1 (en) 2000-09-01 2005-08-30 Intel Corporation Wireless communications system that supports multiple modes of operation
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US9130810B2 (en) * 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US6567387B1 (en) 2000-11-07 2003-05-20 Intel Corporation System and method for data transmission from multiple wireless base transceiver stations to a subscriber unit
US20020136287A1 (en) * 2001-03-20 2002-09-26 Heath Robert W. Method, system and apparatus for displaying the quality of data transmissions in a wireless communication system
FR2825862A1 (fr) * 2001-06-06 2002-12-13 St Microelectronics Sa Procede de transmission de donnees en mc/cdma
US20030021351A1 (en) * 2001-07-24 2003-01-30 Shilpa Talwar System and method for circulant transmit diversity
US7149254B2 (en) * 2001-09-06 2006-12-12 Intel Corporation Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems
US8325847B2 (en) * 2001-09-28 2012-12-04 Intel Corporation Method and apparatus for efficient storage of training sequences for peak to average power constrained modulation formats
US7433418B1 (en) 2001-09-28 2008-10-07 Arraycomm, Llc Method and apparatus for efficient storage of training sequences for peak to average power constrained modulation formats
US7016429B1 (en) * 2001-09-28 2006-03-21 Arraycomm, Llc Training sequences for peak to average power constrained modulation formats
US20030067890A1 (en) * 2001-10-10 2003-04-10 Sandesh Goel System and method for providing automatic re-transmission of wirelessly transmitted information
US7336719B2 (en) * 2001-11-28 2008-02-26 Intel Corporation System and method for transmit diversity base upon transmission channel delay spread
US7012978B2 (en) * 2002-03-26 2006-03-14 Intel Corporation Robust multiple chain receiver
US20030235252A1 (en) * 2002-06-19 2003-12-25 Jose Tellado Method and system of biasing a timing phase estimate of data segments of a received signal
JP3677492B2 (ja) * 2002-07-31 2005-08-03 松下電器産業株式会社 マルチキャリア送信装置およびマルチキャリア送信方法
US7529177B2 (en) * 2002-08-28 2009-05-05 Agere Systems Inc. Dithering scheme using multiple antennas for OFDM systems
EP1437842A1 (de) * 2003-01-10 2004-07-14 Siemens Aktiengesellschaft Mehrträgerübertragung mit Sendediversität
KR100970219B1 (ko) * 2003-06-30 2010-07-16 주식회사 케이티 가중치를 이용한 직교주파수분할다중화 수신 장치와 그장치에서의 디지털 신호 처리 장치 및 그 방법
US7769097B2 (en) 2003-09-15 2010-08-03 Intel Corporation Methods and apparatus to control transmission of a multicarrier wireless communication channel through multiple antennas
DE60318754T2 (de) * 2003-09-15 2009-02-12 Ntt Docomo Inc. Mehrträgersystem mit sendediversität
DE60307140T2 (de) * 2003-09-30 2007-08-02 Ntt Docomo, Inc. Vorrichtung und verfahren zur zyklischen verzögerungsdiversität
US7110352B2 (en) * 2003-12-09 2006-09-19 Nokia Corporation Direct-sequence CDMA method and device
US7302009B2 (en) * 2003-12-17 2007-11-27 Qualcomm Incorporated Broadcast transmission with spatial spreading in a multi-antenna communication system
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
JP4212548B2 (ja) * 2003-12-26 2009-01-21 株式会社東芝 無線送信装置、無線受信装置、無線送信方法及び無線受信方法
US7336746B2 (en) * 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8194771B2 (en) * 2004-01-27 2012-06-05 Agere Systems Inc. Transmission method and apparatus in a multiple antenna 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
US7742533B2 (en) 2004-03-12 2010-06-22 Kabushiki Kaisha Toshiba OFDM signal transmission method and apparatus
US7414963B2 (en) * 2004-04-06 2008-08-19 Staccato Communications, Inc. Dynamic zero suffix addition
US20050238111A1 (en) * 2004-04-09 2005-10-27 Wallace Mark S Spatial processing with steering matrices for pseudo-random transmit steering in a multi-antenna communication system
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
US8233555B2 (en) * 2004-05-17 2012-07-31 Qualcomm Incorporated Time varying delay diversity of OFDM
US7492749B2 (en) * 2004-05-19 2009-02-17 The Directv Group, Inc. Method and system for providing multi-input-multi-output (MIMO) downlink transmission
EP1756991B1 (de) * 2004-05-20 2016-09-28 Intellectual Ventures I LLC Zyklische diversity-systeme und verfahren
US7920884B2 (en) * 2004-06-04 2011-04-05 Qualcomm Incorporated Frame structures for a wireless communication system with multiple radio technologies
KR100789135B1 (ko) 2004-06-21 2007-12-27 삼성전자주식회사 순환 지연 오프셋을 적용한 다이버시티 구현 장치 및 방법
US8077592B2 (en) * 2004-06-22 2011-12-13 Intellectual Ventures I Llc Packet processing systems and methods
US7643453B2 (en) * 2004-06-22 2010-01-05 Webster Mark A Legacy compatible spatial multiplexing systems and methods
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
US7460626B2 (en) 2004-07-20 2008-12-02 Realtek Semiconductor Corp. Method and apparatus of detecting ISI/ICSI in an OFDM system
US7551696B2 (en) 2004-07-20 2009-06-23 Realtek Semiconductor Corp. Method and apparatus of detecting ISI/ICSI in an OFDM system
US9137822B2 (en) * 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9148256B2 (en) * 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
WO2006021227A1 (en) * 2004-08-27 2006-03-02 Ntt Docomo, Inc. Apparatus and method for obtaining delay diversity
US8149685B2 (en) * 2004-09-03 2012-04-03 University Of South Florida Covert OFDM transmission using cyclic prefix
US7894548B2 (en) * 2004-09-03 2011-02-22 Qualcomm Incorporated Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
CN101057417B (zh) * 2004-09-03 2013-05-08 高通股份有限公司 用于使用发射分集方案进行空间扩展的设备和方法
US7978778B2 (en) * 2004-09-03 2011-07-12 Qualcomm, Incorporated Receiver structures for spatial spreading with space-time or space-frequency transmit diversity
US7436903B2 (en) * 2004-09-29 2008-10-14 Intel Corporation Multicarrier transmitter and method for transmitting multiple data streams with cyclic delay diversity
KR100938091B1 (ko) 2004-10-13 2010-01-21 삼성전자주식회사 직교주파수다중분할 이동통신시스템에서 블록 부호화기법과 순환 지연 다이버시티 기법을 사용하는 기지국송신 장치 및 방법
KR20060044126A (ko) * 2004-11-11 2006-05-16 삼성전자주식회사 직교 분할 다중 접속 시스템에서 프리앰블 생성 및 셀검출을 수행하는 장치 및 방법
GB2421406B8 (en) * 2004-12-17 2007-05-10 Chung Shan Inst Of Science Apparatus and method for defining symbol timing window and capturing signal
WO2006069826A1 (fr) * 2004-12-23 2006-07-06 France Telecom Procede d'emission de signaux multiporteuses dans un reseau multicellulaire a macro-diversite planifiee, reseau, signal, procede et dispositif de reception correspondants.
FR2880224A1 (fr) * 2004-12-23 2006-06-30 France Telecom Procede et dispositif d'emission d'un signal multiporteuse avec decalage temporel d'un sous-ensemble d'elements de symbole, signal, procede et dispositif de reception correspondants
JP4569929B2 (ja) * 2005-01-17 2010-10-27 シャープ株式会社 通信装置
GB2423675B (en) * 2005-02-28 2009-08-19 King S College London Diversity transmitter and method
US9246560B2 (en) * 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US20060203794A1 (en) * 2005-03-10 2006-09-14 Qualcomm Incorporated Systems and methods for beamforming in multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US8446892B2 (en) * 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9461859B2 (en) * 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en) * 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US20090213950A1 (en) * 2005-03-17 2009-08-27 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) * 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
DE102005013543A1 (de) * 2005-03-23 2006-10-05 Siemens Ag Verfahren und Vorrichtung zur Übertragung von Daten per Funk in einem Übertragungssystem, vorzugsweise OFDM (Time Variant Cyclical Delay Diversity, TV-CDD)
US9184870B2 (en) * 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9036538B2 (en) * 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9408220B2 (en) * 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US7953039B2 (en) 2005-04-21 2011-05-31 Samsung Elecronics Co., Ltd. System and method for channel estimation in a delay diversity wireless communication system
US8335159B2 (en) * 2005-04-21 2012-12-18 Samsung Electronics Co., Ltd. Method and system for introducing frequency selectivity into transmissions in an orthogonal frequency division multiplexing network
EP1878133B1 (de) * 2005-04-26 2015-03-04 Intellectual Ventures I LLC Systeme und verfahren zur sender-diversity-expansion
US8611284B2 (en) * 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8879511B2 (en) * 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8462859B2 (en) * 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US9179319B2 (en) * 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US7738356B2 (en) * 2005-06-28 2010-06-15 Broadcom Corporation Multiple stream cyclic-shifted delay transmitter
JP4781116B2 (ja) * 2005-06-30 2011-09-28 三洋電機株式会社 無線装置
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US9209956B2 (en) * 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US20070041457A1 (en) * 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US20070047495A1 (en) * 2005-08-29 2007-03-01 Qualcomm Incorporated Reverse link soft handoff in a wireless multiple-access communication system
US9136974B2 (en) * 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
EA014592B1 (ru) * 2005-09-01 2010-12-30 Шарп Кабусики Кайся Способ управления передачей сигналов в системе беспроводной связи
JP4624423B2 (ja) * 2005-09-06 2011-02-02 三洋電機株式会社 受信装置
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
WO2007049944A2 (en) * 2005-10-27 2007-05-03 Electronics And Telecommunications Research Institute Apparatus and method for transmitting signals with multiple antennas
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
KR100652440B1 (ko) 2005-10-27 2006-12-01 삼성전자주식회사 반도체 패키지, 그 패키지를 이용한 스택 패키지 및 그스택 패키지 형성 방법
US9225416B2 (en) * 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US8693405B2 (en) * 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8582509B2 (en) * 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9172453B2 (en) * 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9088384B2 (en) * 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
EA016627B1 (ru) 2005-10-31 2012-06-29 Шарп Кабусики Кайся Беспроводное передающее устройство
EP1944893B1 (de) 2005-10-31 2020-01-01 Sharp Kabushiki Kaisha Funksender, funkkommunikationssystem und funkübertragungsverfahren
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
EP2439860B2 (de) * 2005-12-20 2017-07-26 Huawei Technologies Co., Ltd. Übertragungsverfahren, Basisstation und Mobilsstation für Übertragungsstem mit mehreren Antennen
EP1971042B1 (de) * 2005-12-26 2014-07-30 Huawei Technologies Co., Ltd. Drahtloser sender und drahtloses übertragungsverfahren
US8831607B2 (en) * 2006-01-05 2014-09-09 Qualcomm Incorporated Reverse link other sector communication
US7693239B2 (en) * 2006-02-08 2010-04-06 Harris Corporation Apparatus for decoding convolutional codes and associated method
KR101241895B1 (ko) * 2006-04-10 2013-03-11 엘지전자 주식회사 다수의 반송파를 이용한 반복 전송 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
US9155024B2 (en) * 2006-06-23 2015-10-06 Panasonic Intellectual Property Corporation Of America Radio transmitting apparatus, radio receiving apparatus, and pilot generating method
US7865153B2 (en) * 2006-08-11 2011-01-04 Samsung Electronics Co., Ltd. Apparatus and method for transmit diversity and beamforming in a wireless network
EP2067327B1 (de) * 2006-09-11 2015-04-15 Telefonaktiebolaget LM Ericsson (publ) Detektion von Zeit-Frequenz-Sprungmustern
JP5237287B2 (ja) 2006-10-02 2013-07-17 エルジー エレクトロニクス インコーポレイティド ダウンリンク制御信号の伝送方法
EP2080302A4 (de) 2006-10-02 2014-04-02 Lg Electronics Inc Verfahren zum senden eines steuersignals unter verwendung eines effizienten multiplexverfahrens
KR101265800B1 (ko) * 2007-01-10 2013-05-20 엘지전자 주식회사 다중 반송파 시스템의 제어신호 전송 방법
US8300674B2 (en) * 2007-01-12 2012-10-30 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for complexity reduction in detection of delay and Doppler shifted signature sequences
US8295325B2 (en) * 2007-01-12 2012-10-23 Telefonaktiebolaget L M Ericsson (Publ) Signature sequences and methods for time-frequency selective channel
US8780771B2 (en) * 2007-02-06 2014-07-15 Qualcomm Incorporated Cyclic delay diversity and precoding for wireless communication
US8509710B2 (en) * 2007-02-06 2013-08-13 Qualcomm Incorporated MIMO transmission with explicit and implicit cyclic delays
CN101606330A (zh) * 2007-02-06 2009-12-16 高通股份有限公司 用于使用显式和隐式循环延迟的mimo传输的装置和方法
KR100937029B1 (ko) 2007-03-08 2010-01-15 한국전자통신연구원 신호 전송 방법
KR101049138B1 (ko) 2007-03-19 2011-07-15 엘지전자 주식회사 이동 통신 시스템에서, 수신확인신호 수신 방법
EP2127245B1 (de) 2007-03-19 2015-12-23 LG Electronics Inc. Ressourcenzuweisungsverfahren und verfahren für sendung/empfang von ressourcenzuweisungsinformationen in einem mobilen kommunikationssystem
JPWO2008149533A1 (ja) * 2007-05-31 2010-08-19 パナソニック株式会社 無線通信移動局装置およびｃｄｄモード判定方法
KR100908063B1 (ko) 2007-06-13 2009-07-15 엘지전자 주식회사 이동 통신 시스템에서 확산신호를 송신하는 방법
RU2446601C2 (ru) * 2007-06-13 2012-03-27 Эл Джи Электроникс Инк. Передача сигнала с расширенным спектром в системе связи
KR100913090B1 (ko) 2007-06-13 2009-08-21 엘지전자 주식회사 통신 시스템에서 확산 신호를 송신하는 방법
KR100900289B1 (ko) 2007-06-21 2009-05-29 엘지전자 주식회사 직교 주파수 분할 다중화 시스템에서 제어 채널을 송수신하는 방법
US8131228B2 (en) 2007-08-01 2012-03-06 Telefonaktiebolaget Lm Ericsson (Publ) Interference based phase shift precoding for OFDM
US8811331B2 (en) * 2008-04-10 2014-08-19 Telefonaktiebolaget L M Ericsson (Publ) Pilot design using costas arrays
CN101562470B (zh) * 2008-04-18 2013-06-05 联想(北京)有限公司 一种多用户调度的方法、基站和用户接收装置
TWI399062B (zh) * 2008-09-05 2013-06-11 Ite Tech Inc 干擾估測裝置、決定保護區間與位元負載的方法及其裝置
US20100182899A1 (en) * 2009-01-17 2010-07-22 Qualcomm Incorporated OFDM Time Basis Matching With Pre-FFT Cyclic Shift
US20100232384A1 (en) * 2009-03-13 2010-09-16 Qualcomm Incorporated Channel estimation based upon user specific and common reference signals
US10419533B2 (en) * 2010-03-01 2019-09-17 Genghiscomm Holdings, LLC Edge server selection for device-specific network topologies
US11330046B2 (en) * 2010-03-01 2022-05-10 Tybalt, Llc Content delivery in wireless wide area networks
CN102893536B (zh) 2010-05-21 2015-12-09 瑞典爱立信有限公司 降低无线通信系统中的功耗同时提供足够的定向无线电覆盖
CN102546502B (zh) * 2010-12-08 2016-08-03 上海无线通信研究中心 一种谱域通信信号的解调方法及解调系统
KR101595525B1 (ko) * 2010-12-21 2016-02-26 한국전자통신연구원 위성 통신 시스템에서의 주파수 선택성 구현을 위한 송신 장치 및 방법
JP6115416B2 (ja) * 2013-09-06 2017-04-19 富士通株式会社 光送信器、光受信器、光伝送システム、光送信方法、光受信方法、および光伝送方法
GB2518215A (en) * 2013-09-13 2015-03-18 Univ Edinburgh Transmission scheme for communications systems
TWI513247B (zh) * 2013-11-12 2015-12-11 Fci Inc 正交分頻多工系統的快速傅氏轉換視窗調節方法
US9755722B2 (en) * 2014-08-07 2017-09-05 Mitsubishi Electric Corporation Transmission device, reception device, communication system, transmission method and reception method
KR101706629B1 (ko) * 2016-01-25 2017-02-16 주식회사 이노와이어리스 Ｍｉｍｏ-ｏｆｄｍ 송신기에 대한 파워 캘리브레이션 방법
US10063306B2 (en) * 2016-10-24 2018-08-28 Mitsubishi Electric Research Laboratories, Inc. Method and systems using quasi-synchronous distributed CDD systems
US10237055B1 (en) * 2017-12-12 2019-03-19 Mitsubishi Electric Research Laboratories, Inc. Method and systems for radio transmission with distributed cyclic delay diversity
US10951447B2 (en) 2019-02-28 2021-03-16 At&T Intellectual Property I, L.P. Dynamic cyclic extension for fast access to subscriber terminals (G.Fast)
CN112187682B (zh) 2019-07-02 2022-08-26 华为技术有限公司 符号处理的方法与装置
CN112187690B (zh) 2019-07-02 2022-10-04 华为技术有限公司 符号处理的方法与装置
JP2023519401A (ja) * 2020-03-31 2023-05-10 ソニーグループ株式会社 参照シグナリングのための方法、送信側ノード及び受信側ノード
CN112636798B (zh) * 2020-12-28 2022-04-15 中山大学 一种面向低轨星座通信的信号发送与接收方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696064B1 (fr) 1992-09-18 1994-11-18 France Telecom Système de diffusion de signaux numériques à génération active de la diversité en temps, émetteur et récepteur correspondants.
JP3438918B2 (ja) * 1992-11-27 2003-08-18 コモンウェルス サイエンティフィック アンド インダストリアル リサーチ オーガニゼーション ワイヤレスｌａｎ
JP3662321B2 (ja) * 1995-12-19 2005-06-22 松下電器産業株式会社 移動通信装置
JP2772282B2 (ja) * 1996-07-01 1998-07-02 株式会社次世代デジタルテレビジョン放送システム研究所 Ｏｆｄｍ伝送システムとその送受信装置
DE19644430C1 (de) 1996-10-25 1997-12-18 Bayerischer Rundfunk Anstalt D Verfahren zur Reduzierung der Selbstinterferenz in digitalen Sendernetzen, die in Gleichwellentechnik betrieben werden
US6005894A (en) * 1997-04-04 1999-12-21 Kumar; Derek D. AM-compatible digital broadcasting method and system
FI973849A (fi) * 1997-09-30 1999-03-31 Nokia Telecommunications Oy Menetelmä parantaa radioyhteyden laatua radiojärjestelmässä
JP4130264B2 (ja) * 1998-12-08 2008-08-06 松下電器産業株式会社 電力線搬送通信システム
US6594473B1 (en) * 1999-05-28 2003-07-15 Texas Instruments Incorporated Wireless system with transmitter having multiple transmit antennas and combining open loop and closed loop transmit diversities
US6661771B1 (en) * 1999-09-17 2003-12-09 Lucent Technologies Inc. Method and apparatus for interleaver synchronization in an orthogonal frequency division multiplexing (OFDM) communication system
US6580705B1 (en) * 1999-10-28 2003-06-17 Lucent Technologies Inc. Signal combining scheme for wireless transmission systems having multiple modulation schemes
US6549544B1 (en) * 1999-11-10 2003-04-15 Ibiquity Digital Corporation Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting
US6473467B1 (en) * 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system

Also Published As

Publication number Publication date
ES2301559T3 (es) 2008-07-01
EP1319278A1 (de) 2003-06-18
AU2001280362A1 (en) 2002-04-02
CN1291563C (zh) 2006-12-20
CA2421768A1 (en) 2002-03-28
WO2002025857A1 (en) 2002-03-28
CA2421768C (en) 2012-06-26
JP4988137B2 (ja) 2012-08-01
JP2004509556A (ja) 2004-03-25
EP1319278B1 (de) 2008-02-27
DE60133015T2 (de) 2009-03-19
CN1476695A (zh) 2004-02-18
ATE387769T1 (de) 2008-03-15
US6842487B1 (en) 2005-01-11

Similar Documents

Publication Publication Date Title
DE60133015D1 (de) Zyklische verzögerungsdiversität zur verringerung der intersymbolinterferenz in ofdm-systemen
ATE414372T1 (de) Funk-übertragung mit variabler länge des guard intervals
MX2009004444A (es) Metodo y aparato para multiplexar transmisiones de acceso multiple de division de codigo y de acceso multiple de division de frecuencia de portador individual.
ES2188370A1 (es) Procedimiento para la sincronizacion en el enlace descendente de multiples usuarios en un sistema de transmision punto a multipunto con modulacion ofdm.
CA2361247A1 (en) Transmitter, transmitting method, receiver, and receiving method for mc-cdma communication system
EP1946474A4 (de) Effiziente datenübertragung und training von datenverarbeitungsfunktionen
WO2007021384A3 (en) Method and apparatus for pilot signal transmission
GB2459807B (en) Method of transmitting control signals in wireless communication system
EP2026518A3 (de) Verfahren und Vorrichtung für Pilot-Multiplexen in einem drahtlosen Kommunikationssystem
WO2004064295A3 (en) Pilot transmission schemes for wireless multi-carrier communication systems
WO2007089199A3 (en) Method for processing the random access transmission in the frequency domain
DE60143183D1 (de) Datenübertragungsverfahren, Datenübertragungssystem, Sender und Empfänger
WO2007130011A8 (en) Method and system for processing reference signals in ofdm systems using transmission time interval groupings
WO2007066973A3 (en) Apparatus and method for transmitting data using a plurality of carriers
DE50015928D1 (de) Übertragungsverfahren mit senderseitiger Frequenz- und Zeitspreizung
BR0209521A (pt) Método e equipamento para processar dados em um sistema de comunicação de múltiplas entradas e múltiplas saìdas (mimo) utilizando-se informações de estado de canal
TW200704060A (en) Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot
UA90877C2 (ru) Оценка канала для заглушения помех
DE60025197D1 (de) Adaptive Entzerrung und Dekodierung für gespreizte Kanalverzögerung
EP1901506A3 (de) Verfahren zur Unterdrückung von Intersymbolinterferenzen in OFDMA-Systemen
ATE357094T1 (de) Sendeleistung für pilot-symbole
UA90244C2 (ru) Схема передачи пилот-сигналов для систем радиосвязи с передачей на несколько несущих
EP0874494A3 (de) Verfahren zum Mehrfachzugriff unter Verwendung von Mehrträgermodulation
EP0666661A3 (de) Verfahren zur Erkennung eines Übertragungsmodes bei einem digitalen Mehrkanalübertragungssystem
AU7627401A (en) Method for the transmission of digital data by means of radio signals with orthogonal frequency division multiplexing (ofdm)

Legal Events

Date Code Title Description
8364 No opposition during term of opposition