TW200623697A - Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system - Google Patents

Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system

Info

Publication number
TW200623697A
TW200623697A TW094125662A TW94125662A TW200623697A TW 200623697 A TW200623697 A TW 200623697A TW 094125662 A TW094125662 A TW 094125662A TW 94125662 A TW94125662 A TW 94125662A TW 200623697 A TW200623697 A TW 200623697A
Authority
TW
Taiwan
Prior art keywords
ofdm
wireless communication
frequency division
division multiplexing
orthogonal frequency
Prior art date
Application number
TW094125662A
Other languages
English (en)
Other versions
TWI305094B (en
Inventor
Chang-Soo Koo
Guo-Dong Zhang
Robert Lind Olesen
Ying-Ming Tsai
Yue-Jin Huang
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200623697A publication Critical patent/TW200623697A/zh
Application granted granted Critical
Publication of TWI305094B publication Critical patent/TWI305094B/zh

Links

Classifications

    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • 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
    • 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
    • H04B7/0417—Feedback 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
    • H04B7/0619—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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • 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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04L5/0001—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
    • 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
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
TW094125662A 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (ofdm) wireless communication system TWI305094B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60074104P 2004-08-11 2004-08-11
US11/123,738 US20060034244A1 (en) 2004-08-11 2005-05-06 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system

Publications (2)

Publication Number Publication Date
TW200623697A true TW200623697A (en) 2006-07-01
TWI305094B TWI305094B (en) 2009-01-01

Family

ID=35799854

Family Applications (3)

Application Number Title Priority Date Filing Date
TW094125662A TWI305094B (en) 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (ofdm) wireless communication system
TW095104276A TW200705872A (en) 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system
TW097128904A TW201004195A (en) 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system

Family Applications After (2)

Application Number Title Priority Date Filing Date
TW095104276A TW200705872A (en) 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system
TW097128904A TW201004195A (en) 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system

Country Status (12)

Country Link
US (1) US20060034244A1 (zh)
EP (2) EP2187554A1 (zh)
JP (1) JP2008510374A (zh)
KR (2) KR20070059086A (zh)
AU (2) AU2005274162B2 (zh)
BR (1) BRPI0515018A (zh)
CA (1) CA2576481A1 (zh)
IL (1) IL181026A0 (zh)
MX (1) MX2007001709A (zh)
NO (1) NO20071261L (zh)
TW (3) TWI305094B (zh)
WO (1) WO2006020400A2 (zh)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7469152B2 (en) * 2004-11-30 2008-12-23 The Regents Of The University Of California Method and apparatus for an adaptive multiple-input multiple-output (MIMO) wireless communications systems
US8068550B2 (en) * 2005-01-28 2011-11-29 Broadcom Corporation Initiation of a MIMO communication
US7742444B2 (en) * 2005-03-15 2010-06-22 Qualcomm Incorporated Multiple other sector information combining for power control in a wireless communication system
US8750908B2 (en) * 2005-06-16 2014-06-10 Qualcomm Incorporated Quick paging channel with reduced probability of missed page
US9055552B2 (en) * 2005-06-16 2015-06-09 Qualcomm Incorporated Quick paging channel with reduced probability of missed page
CN101243625A (zh) 2005-08-19 2008-08-13 松下电器产业株式会社 多载波通信***、多载波通信装置和信道质量指标报告方法
US7688788B2 (en) * 2005-10-11 2010-03-30 Microsoft Corporation Congestion level and signal quality based estimator for bit-rate and automated load balancing for WLANS
US20090207790A1 (en) * 2005-10-27 2009-08-20 Qualcomm Incorporated Method and apparatus for settingtuneawaystatus in an open state in wireless communication system
WO2007050896A1 (en) * 2005-10-27 2007-05-03 Qualcomm Incorporated A method and apparatus for transmitting and receiving rlab over f-ssch in wireless communication system
US20070147226A1 (en) * 2005-10-27 2007-06-28 Aamod Khandekar Method and apparatus for achieving flexible bandwidth using variable guard bands
US20070097935A1 (en) * 2005-10-27 2007-05-03 Alexei Gorokhov In-band rate control for an orthogonal frequency division multiple access communication system
US7760827B2 (en) * 2005-11-30 2010-07-20 Motorola, Inc. Method and apparatus for improving recovery performance of time windowed signals
JP4732521B2 (ja) * 2005-12-23 2011-07-27 サムスン エレクトロニクス カンパニー リミテッド チャネル品質情報報告のための方法及び装置
US20070153745A1 (en) * 2006-01-04 2007-07-05 Yishen Sun System and method for link adaptation for WLAN voice transmission
JP4739354B2 (ja) * 2006-01-23 2011-08-03 シャープ株式会社 基地局装置、移動局装置、移動局識別情報割り当て方法、プログラム及び記録媒体
US7627347B2 (en) * 2006-03-17 2009-12-01 Nokia Corporation Data transmission parameter optimization in MIMO communications system
FI20065183A0 (fi) * 2006-03-20 2006-03-20 Nokia Corp Kanavan laadun signalointi
CN102684839A (zh) * 2006-03-24 2012-09-19 华为技术有限公司 发送子带指示的方法和***
WO2007109917A1 (en) * 2006-03-24 2007-10-04 Huawei Technologies Co., Ltd. Method and system for subband indicator signalling
CN102724019A (zh) * 2006-03-24 2012-10-10 华为技术有限公司 发送子带指示的方法和***
ATE494686T1 (de) * 2006-04-14 2011-01-15 Mitsubishi Electric Corp Verfahren zum erhalt von für das feedback zur kanalqualität auf mindestens einem frequenzunterband repräsentativer information
EP2381607B1 (en) 2006-04-21 2013-01-16 Panasonic Corporation Mimo receiver apparatus and mimo transmitter apparatus
KR20080004701A (ko) * 2006-07-06 2008-01-10 삼성전자주식회사 무선 통신시스템에서 채널 피드백 장치 및 방법
ES2901556T3 (es) 2006-09-26 2022-03-22 Optis Wireless Technology Llc Esquema de comunicaciones para información de calidad de canal
US7924809B2 (en) * 2006-11-22 2011-04-12 Intel Corporation Techniques to provide a channel quality indicator
JP2008219401A (ja) * 2007-03-02 2008-09-18 Sanyo Electric Co Ltd スロット連結時のスロット割当方法およびそれを利用した基地局装置
US20080239936A1 (en) * 2007-03-28 2008-10-02 Motorola, Inc. Method and apparatus for mitigating interference in multicarrier modulation systems
US20100177717A1 (en) * 2007-04-19 2010-07-15 Lg Electronics Inc. Grouping based resource allocation method, method for transmitting signal using the same, and grouping based resource allocation controller
AU2007356479B2 (en) * 2007-07-06 2012-12-13 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangements for communication of channel quality information in a telecommunications system
JP5567835B2 (ja) * 2007-08-07 2014-08-06 シャープ株式会社 通信装置および受信品質算出方法
KR101455981B1 (ko) * 2007-08-14 2014-11-03 엘지전자 주식회사 하향링크 상황에 따른 적응적 채널 품질 지시자 생성 방법및 이를 위한 사용자 기기
KR101341517B1 (ko) 2007-08-31 2013-12-16 엘지전자 주식회사 인접 대역 선택 방식에 기초한 채널 품질 지시자 생성 및전송 방법
US7778340B2 (en) * 2007-09-06 2010-08-17 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Accurate channel quality indicator for link adaptation of MIMO communication systems
US7933350B2 (en) * 2007-10-30 2011-04-26 Telefonaktiebolaget Lm Ericsson (Publ) Channel-dependent frequency-domain scheduling in an orthogonal frequency division multiplexing communications system
KR100937040B1 (ko) * 2007-12-03 2010-01-15 한국전자통신연구원 다중 송수신 안테나 시스템에서의 자동 재전송 요구 처리장치 및 그 방법
ES2354734T3 (es) * 2007-12-19 2011-03-17 Sony Corporation Ajuste óptimo de la tasa de error de bit (ber) para la modulación adaptativa multiportadora.
JP4893618B2 (ja) * 2007-12-27 2012-03-07 富士通東芝モバイルコミュニケーションズ株式会社 移動無線端末装置および移動通信システム
US8493874B2 (en) * 2008-05-05 2013-07-23 Motorola Mobility Llc Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system
US8355360B2 (en) * 2008-05-14 2013-01-15 Motorola Mobility Llc Method and apparatus for allocating downlink power in an orthogonal frequency division multiplexing communication system
JP2010130200A (ja) * 2008-11-26 2010-06-10 Sharp Corp 送信装置、受信装置、通信システムおよび通信方法
JP5801721B2 (ja) 2009-01-26 2015-10-28 ドレクセル ユニバーシティ Ｍｉｍｏ系において再構成可能アンテナを選択するシステムおよび方法
KR101562519B1 (ko) * 2009-02-06 2015-10-22 삼성전자주식회사 Ｏｆｄｍ 시스템에서의 전력분배 방법 및 장치
JP5025712B2 (ja) * 2009-11-10 2012-09-12 パナソニック株式会社 無線通信装置および無線通信方法
US8767657B1 (en) * 2011-04-19 2014-07-01 Quantenna Communications Inc. Mixed-mode MIMO detector in a local area network
EP2579487B1 (en) 2011-10-03 2014-05-21 ST-Ericsson SA Non-contiguous carrier aggregation
BR112014027520A2 (pt) * 2012-05-04 2017-06-27 Huawei Tech Co Ltd método para obtenção de relação de sinal de ruído, dispositivo de recepção de sinal e dispositivo de envio de sinal
EP3228135B1 (en) * 2014-12-05 2020-03-18 Telefonaktiebolaget LM Ericsson (publ) Method and communication device for performing link adaptation
CN108174413B (zh) * 2017-12-26 2020-09-01 Oppo广东移动通信有限公司 参数调整方法及装置
US20240107520A1 (en) * 2022-09-23 2024-03-28 Qualcomm Incorporated Cross bwp/cc ue sim report

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU749912B2 (en) * 1998-04-14 2002-07-04 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Frame structure and frame synchronization for multicarrier systems
DE10012784A1 (de) * 2000-03-16 2001-09-27 Degussa Ruß
EP2259479B1 (en) * 2000-11-20 2019-04-17 Sony Deutschland GmbH Adaptive subcarrier loading
US6931644B2 (en) * 2000-12-21 2005-08-16 International Business Machines Corporation Hierarchical connected graph model for implementation of event management design
US6731668B2 (en) * 2001-01-05 2004-05-04 Qualcomm Incorporated Method and system for increased bandwidth efficiency in multiple input—multiple output channels
US6751187B2 (en) * 2001-05-17 2004-06-15 Qualcomm Incorporated Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission
US6944460B2 (en) * 2001-06-07 2005-09-13 Telefonaktiebolaget L M Ericsson (Publ) System and method for link adaptation in communication systems
US6784439B2 (en) * 2001-07-19 2004-08-31 Ut Battelle, Llc Thin-channel electrospray emitter
US7164649B2 (en) * 2001-11-02 2007-01-16 Qualcomm, Incorporated Adaptive rate control for OFDM communication system
US6856604B2 (en) * 2001-12-19 2005-02-15 Qualcomm Incorporated Efficient multi-cast broadcasting for packet data systems
US7020110B2 (en) * 2002-01-08 2006-03-28 Qualcomm Incorporated Resource allocation for MIMO-OFDM communication systems
US7245598B2 (en) * 2002-02-21 2007-07-17 Qualcomm Incorporated Feedback of channel quality information
US7986672B2 (en) * 2002-02-25 2011-07-26 Qualcomm Incorporated Method and apparatus for channel quality feedback in a wireless communication
US7103325B1 (en) * 2002-04-05 2006-09-05 Nortel Networks Limited Adaptive modulation and coding
TWI349452B (en) * 2002-08-07 2011-09-21 Interdigital Tech Corp Channel switching for support of multlmedia broadcast and multicast services
US7412212B2 (en) * 2002-10-07 2008-08-12 Nokia Corporation Communication system
KR100517237B1 (ko) * 2002-12-09 2005-09-27 한국전자통신연구원 직교 주파수 분할 다중화 무선 통신 시스템에서의채널품질 추정과 링크적응 방법 및 그 장치
KR100950652B1 (ko) * 2003-01-08 2010-04-01 삼성전자주식회사 직교 주파수 분할 다중 전송 방식에서 순방향 링크의 채널 상태 추정 방법
KR100640461B1 (ko) * 2003-07-30 2006-10-30 삼성전자주식회사 직교 주파수 분할 다중 접속 방식을 사용하는 이동 통신시스템에서 서브 채널 할당 장치 및 방법
EP1646170B1 (en) * 2003-08-20 2019-10-09 Godo Kaisha IP Bridge 1 Radio communication apparatus and subcarrier assignment method
US7349436B2 (en) * 2003-09-30 2008-03-25 Intel Corporation Systems and methods for high-throughput wideband wireless local area network communications
KR100876757B1 (ko) * 2003-10-31 2009-01-07 삼성전자주식회사 통신 시스템에서 서브 채널 구성 시스템 및 방법
US7352819B2 (en) * 2003-12-24 2008-04-01 Intel Corporation Multiantenna communications apparatus, methods, and system
US20050169261A1 (en) * 2004-02-03 2005-08-04 Texas Instruments Incorporated Method of signaling the length of OFDM WLAN packets
US7701909B2 (en) * 2004-02-17 2010-04-20 Alcatel-Lucent Usa Inc. Methods and devices for selecting sets of available sub-channels
CN1998247B (zh) * 2004-06-30 2012-05-30 桥扬科技有限公司 用于多载波无线***中功率控制的方法和装置
US7272190B2 (en) * 2004-07-07 2007-09-18 Motorola, Inc. Method and apparatus for determining channel quality and performing adaptive modulation/coding within a multicarrier communication system

Also Published As

Publication number Publication date
KR20070067705A (ko) 2007-06-28
WO2006020400A2 (en) 2006-02-23
TW201004195A (en) 2010-01-16
EP2187554A1 (en) 2010-05-19
JP2008510374A (ja) 2008-04-03
MX2007001709A (es) 2007-04-16
TWI305094B (en) 2009-01-01
AU2005274162A1 (en) 2006-02-23
AU2008243233A1 (en) 2008-12-04
WO2006020400A3 (en) 2006-12-07
KR20070059086A (ko) 2007-06-11
EP1779571A4 (en) 2007-12-19
BRPI0515018A (pt) 2008-07-01
IL181026A0 (en) 2007-07-04
NO20071261L (no) 2007-03-08
TW200705872A (en) 2007-02-01
CA2576481A1 (en) 2006-02-23
EP1779571A2 (en) 2007-05-02
AU2005274162B2 (en) 2008-08-14
US20060034244A1 (en) 2006-02-16

Similar Documents

Publication Publication Date Title
TW200623697A (en) Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system
EP1985041B1 (en) Apparatus and method for allocating resources and performing communication in a wireless communication system
WO2006010027A3 (en) Method and apparatus for determining channel quality and performing adaptive modulation/coding within a multicarrier communication system
IN2015KN00705A (zh)
TW200620863A (en) Multicarrier communication system and methods for link adaptation using uniform bit loading and subcarrier puncturing
TW200718128A (en) Techniques to transmit data rate control signals for multi-carrier wireless systems
WO2009082120A3 (en) Method for transmitting data in wireless communication system
TW200711488A (en) Method and apparatus for wireless multi-carrier communications
WO2012008726A3 (en) Inter-cell interference coordination method and apparatus for an ofdm-based heterogeneous cellular system
EP1760961A3 (en) Apparatus and method for feeding back channel quality information and scheduling apparatus and method using the same in a wireless communication system
WO2007050981A3 (en) A method and apparatus for modulating common pilot channel in block hopping mode in wireless communication system
DE602006009185D1 (de) Multiplexierungsschema für Unicast- und Broadcast -Verkehr in einem drahtlosen Mehrträger-Kommunikationsnetzwerk
WO2005036847A3 (en) An apparatus and associated methods to implement a high throughput wireless communication system
WO2009137349A3 (en) Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system
WO2007022014A3 (en) Method and apparatus for sending downlink control information in an orthogonal frequency division multiple access system
TW200729775A (en) Method and apparatus for efficient configuration of hybrid sub-carrier allocation
TW200704250A (en) Method and apparatus for providing control channel monitoring in a multi-carrier system
WO2006135186A3 (en) A method and apparatus for allocating a plurality of data symbols in a wireless communication system
TW200616367A (en) Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system
EP1533965A3 (en) Apparatus and method for controlling adaptive modulation and coding in an orthogonal frequency division multiplexing communication system
WO2010110603A3 (en) Techniques for pilot stream remapping in ofdm wireless communication system
EP1956771A3 (en) Wireless communication system and wireless communication method
WO2007035044A3 (en) Method and appratus for multiplexing multiple reverse feedback channels in multicarrier wireless networks
WO2006124336A3 (en) Method of reverse link transmission in a wireless network using code and frequency multiplexing
CN101242239A (zh) 实现上行跳频传输的方法、***和终端

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees