SE503548C2 - Anordning i OFDM fleranvändarsystem - Google Patents

Anordning i OFDM fleranvändarsystem

Info

Publication number
SE503548C2
SE503548C2 SE9303213A SE9303213A SE503548C2 SE 503548 C2 SE503548 C2 SE 503548C2 SE 9303213 A SE9303213 A SE 9303213A SE 9303213 A SE9303213 A SE 9303213A SE 503548 C2 SE503548 C2 SE 503548C2
Authority
SE
Sweden
Prior art keywords
frequencies
users
attenuation
user
carriers
Prior art date
Application number
SE9303213A
Other languages
English (en)
Swedish (sv)
Other versions
SE9303213L (sv
SE9303213D0 (sv
Inventor
Bo Engstroem
Roger Larsson
Original Assignee
Telia 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 Telia Ab filed Critical Telia Ab
Priority to SE9303213A priority Critical patent/SE503548C2/sv
Publication of SE9303213D0 publication Critical patent/SE9303213D0/xx
Priority to US08/615,172 priority patent/US5784363A/en
Priority to EP94929064A priority patent/EP0721705B1/de
Priority to PCT/SE1994/000841 priority patent/WO1995010144A1/en
Priority to DE69431159T priority patent/DE69431159T2/de
Publication of SE9303213L publication Critical patent/SE9303213L/xx
Publication of SE503548C2 publication Critical patent/SE503548C2/sv

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
    • H04B7/12—Frequency diversity
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • 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
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • 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
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
SE9303213A 1993-10-01 1993-10-01 Anordning i OFDM fleranvändarsystem SE503548C2 (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9303213A SE503548C2 (sv) 1993-10-01 1993-10-01 Anordning i OFDM fleranvändarsystem
US08/615,172 US5784363A (en) 1993-10-01 1994-09-12 Arrangement in a multi-user system
EP94929064A EP0721705B1 (de) 1993-10-01 1994-09-12 Einrichtung in einem mehrbenutzersystem
PCT/SE1994/000841 WO1995010144A1 (en) 1993-10-01 1994-09-12 Arrangement in a multi-user system
DE69431159T DE69431159T2 (de) 1993-10-01 1994-09-12 Einrichtung in einem mehrbenutzersystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303213A SE503548C2 (sv) 1993-10-01 1993-10-01 Anordning i OFDM fleranvändarsystem

Publications (3)

Publication Number Publication Date
SE9303213D0 SE9303213D0 (sv) 1993-10-01
SE9303213L SE9303213L (sv) 1995-04-02
SE503548C2 true SE503548C2 (sv) 1996-07-01

Family

ID=20391285

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303213A SE503548C2 (sv) 1993-10-01 1993-10-01 Anordning i OFDM fleranvändarsystem

Country Status (5)

Country Link
US (1) US5784363A (de)
EP (1) EP0721705B1 (de)
DE (1) DE69431159T2 (de)
SE (1) SE503548C2 (de)
WO (1) WO1995010144A1 (de)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
US5726978A (en) * 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
JP2804258B2 (ja) * 1995-12-12 1998-09-24 松下電器産業株式会社 ディジタル通信装置
US6002677A (en) * 1996-08-19 1999-12-14 At&T Corporation Method and apparatus for transmitting high rate packet data over under-utilized virtual circuits
DE19646371A1 (de) * 1996-11-09 1998-05-14 Bosch Gmbh Robert Verfahren und Anordnung zum Verbessern der Übertragungsqualität in einem Punkt-zu-Mehrpunkt Funkübertragungssystem
US5956642A (en) * 1996-11-25 1999-09-21 Telefonaktiebolaget L M Ericsson Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6501771B2 (en) 1997-02-11 2002-12-31 At&T Wireless Services, Inc. Delay compensation
US6584144B2 (en) 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US6301221B1 (en) * 1997-09-10 2001-10-09 Hewlett-Packard Company Methods and apparatus for encoding data
DK1068704T3 (da) 1998-04-03 2012-09-17 Tellabs Operations Inc Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
US6795424B1 (en) * 1998-06-30 2004-09-21 Tellabs Operations, Inc. Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems
CN100391131C (zh) * 1998-08-21 2008-05-28 埃沃罗杰克斯有限公司 信息传输方法和适用该方法的系统
DE19927040A1 (de) * 1999-06-07 2000-12-14 Rudolf Bannasch Verfahren zur Verarbeitung von frequenzvariablen Wellensignalen und ein geeignetes System zur Signalbearbeitung
US6292660B1 (en) * 1998-09-29 2001-09-18 Ericsson Inc. Adaptive site scanning based on fade base estimation
US6134226A (en) * 1998-12-31 2000-10-17 Motorola, Inc. Method and system for allocating a system resource to subscribers of a wireless communications system
US7215650B1 (en) 1999-08-16 2007-05-08 Viasat, Inc. Adaptive data rate control for narrowcast networks
AU2001252897A1 (en) * 2000-03-09 2001-09-17 Raytheon Company Frequency domain direct sequence spread spectrum with flexible time frequency code
DE60037583T2 (de) 2000-08-24 2009-01-08 Sony Deutschland Gmbh Kommunikationseinrichtung zum Senden und Empfangen von OFDM Signalen in einem Funkkommunikationssystem
US7072315B1 (en) * 2000-10-10 2006-07-04 Adaptix, Inc. Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US7072413B2 (en) 2001-05-17 2006-07-04 Qualcomm, Incorporated Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion
US7688899B2 (en) * 2001-05-17 2010-03-30 Qualcomm Incorporated Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion
US7027523B2 (en) * 2001-06-22 2006-04-11 Qualcomm Incorporated Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
US7280504B2 (en) * 2001-09-28 2007-10-09 Kabushiki Kaisha Toshiba OFDM transmitting and receiving apparatus
US8391249B2 (en) 2003-02-18 2013-03-05 Qualcomm Incorporated Code division multiplexing commands on a code division multiplexed channel
US7155236B2 (en) 2003-02-18 2006-12-26 Qualcomm Incorporated Scheduled and autonomous transmission and acknowledgement
US7660282B2 (en) 2003-02-18 2010-02-09 Qualcomm Incorporated Congestion control in a wireless data network
US8150407B2 (en) 2003-02-18 2012-04-03 Qualcomm Incorporated System and method for scheduling transmissions in a wireless communication system
US20040160922A1 (en) 2003-02-18 2004-08-19 Sanjiv Nanda Method and apparatus for controlling data rate of a reverse link in a communication system
US8081598B2 (en) 2003-02-18 2011-12-20 Qualcomm Incorporated Outer-loop power control for wireless communication systems
US8023950B2 (en) 2003-02-18 2011-09-20 Qualcomm Incorporated Systems and methods for using selectable frame durations in a wireless communication system
US8705588B2 (en) 2003-03-06 2014-04-22 Qualcomm Incorporated Systems and methods for using code space in spread-spectrum communications
US7215930B2 (en) 2003-03-06 2007-05-08 Qualcomm, Incorporated Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication
US8477592B2 (en) 2003-05-14 2013-07-02 Qualcomm Incorporated Interference and noise estimation in an OFDM system
US7012912B2 (en) * 2003-05-14 2006-03-14 Qualcomm Incorporated Power control and scheduling in an OFDM system
US8489949B2 (en) 2003-08-05 2013-07-16 Qualcomm Incorporated Combining grant, acknowledgement, and rate control commands
EP1526674B1 (de) * 2003-10-21 2007-08-01 Alcatel Lucent Verfahren zur Zuordnung der Unterträger und zur Auswahl des Modulationsschemas in einem drahtlosen Mehrträgerübertragungssystem
US7197692B2 (en) * 2004-06-18 2007-03-27 Qualcomm Incorporated Robust erasure detection and erasure-rate-based closed loop power control
US7594151B2 (en) * 2004-06-18 2009-09-22 Qualcomm, Incorporated Reverse link power control in an orthogonal system
US8452316B2 (en) * 2004-06-18 2013-05-28 Qualcomm Incorporated Power control for a wireless communication system utilizing orthogonal multiplexing
US7573851B2 (en) 2004-12-07 2009-08-11 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
US7512412B2 (en) 2005-03-15 2009-03-31 Qualcomm, Incorporated Power control and overlapping control for a quasi-orthogonal communication system
US8942639B2 (en) 2005-03-15 2015-01-27 Qualcomm Incorporated Interference control in a wireless communication system
US8848574B2 (en) 2005-03-15 2014-09-30 Qualcomm Incorporated Interference control in a wireless communication system
FR2891968B1 (fr) * 2005-10-12 2008-01-18 Valeo Electronique Sys Liaison Systeme de communication entre une unite d'acquisition d'images video et un ordinateur de bord pour un vehicule automobile
JP5430938B2 (ja) 2005-10-27 2014-03-05 クゥアルコム・インコーポレイテッド 無線通信システムにおける逆方向リンク・ローディングを推定するための方法及び装置
US8670777B2 (en) 2006-09-08 2014-03-11 Qualcomm Incorporated Method and apparatus for fast other sector interference (OSI) adjustment
US8442572B2 (en) * 2006-09-08 2013-05-14 Qualcomm Incorporated Method and apparatus for adjustments for delta-based power control in wireless communication systems
US8743775B2 (en) * 2009-04-30 2014-06-03 Blackberry Limited Method for handling inter-radio access technology measurement requests in a mobile telecommunications device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR610988A (fr) * 1926-02-11 1926-09-17 Goulottes perfectionnées pour distributeurs à disques, d'engrais, de graines et de produits quelconques
US4126828A (en) * 1976-07-31 1978-11-21 Trio Kabushiki Kaisha Intermodulation antiinterference device for superheterodyne receiver
FR2526609A1 (fr) * 1982-05-04 1983-11-10 Thomson Csf Recepteur de signaux multiporteuses protege des signaux perturbateurs
DE3621679A1 (de) * 1986-06-27 1988-01-14 Beyer Eugen Verfahren und einrichtung zur auswahl des empfangswuerdigen kanals bei drahtlosen mikrofonanlagen
JPH01133409A (ja) * 1987-11-19 1989-05-25 Sanyo Electric Co Ltd オートサーチチューナ
JP2854346B2 (ja) * 1989-09-19 1999-02-03 日本電信電話株式会社 チャネル割当方法
GB9010637D0 (en) * 1990-05-11 1990-07-04 Secr Defence A high frequency multichannel diversity differential phase shift(dpsk)communications system
US5058133A (en) * 1990-08-10 1991-10-15 Ascend Communications, Inc. Method and apparatus for digital communication
US5212831A (en) * 1990-11-28 1993-05-18 Bell Communications Research, Inc. Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems
US5142691A (en) * 1991-04-05 1992-08-25 Motorola, Inc. Frequency management system
US5321847A (en) * 1991-07-26 1994-06-14 Motorola, Inc. Apparatus and method for detecting intermodulation distortion in a radio frequency receiver
US5203012A (en) * 1992-02-10 1993-04-13 Motorola, Inc. Method and apparatus for optimum channel assignment
US5282222A (en) * 1992-03-31 1994-01-25 Michel Fattouche Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum
US5548809A (en) * 1992-07-15 1996-08-20 Southwestern Bell Technology Resources, Inc. Spectrum sharing communications system and system for monitoring available spectrum
FR2707127A1 (fr) * 1993-06-29 1995-01-06 Philips Laboratoire Electroniq Système de transmission numérique à prédisposition.
US5412658A (en) * 1993-10-22 1995-05-02 Bell Communications Research, Inc. Beacon detection method and apparatus for sharing spectrum between wireless communications systems and fixed microwave systems
JP2985610B2 (ja) * 1993-10-26 1999-12-06 三菱電機株式会社 チャネル割当て方式およびこれを備えた無線通信システム

Also Published As

Publication number Publication date
SE9303213L (sv) 1995-04-02
US5784363A (en) 1998-07-21
DE69431159T2 (de) 2003-04-03
SE9303213D0 (sv) 1993-10-01
WO1995010144A1 (en) 1995-04-13
DE69431159D1 (de) 2002-09-12
EP0721705A1 (de) 1996-07-17
EP0721705B1 (de) 2002-08-07

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