TW200705872A - 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
TW200705872A
TW200705872A TW095104276A TW95104276A TW200705872A TW 200705872 A TW200705872 A TW 200705872A TW 095104276 A TW095104276 A TW 095104276A TW 95104276 A TW95104276 A TW 95104276A TW 200705872 A TW200705872 A TW 200705872A
Authority
TW
Taiwan
Prior art keywords
ofdm
wireless communication
frequency division
division multiplexing
orthogonal frequency
Prior art date
Application number
TW095104276A
Other languages
English (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 TW200705872A publication Critical patent/TW200705872A/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Arrangements for allocating sub-channels of the transmission path allocation of payload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter only
    • H04L27/2646Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/20Monitoring; Testing of receivers
    • H04B17/24Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0417Feedback systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0621Feedback content
    • H04B7/0632Channel quality parameters, e.g. channel quality indicator [CQI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016Systems 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0224Channel estimation using sounding signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/006Quality of the received signal, e.g. BER, SNR, water filling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/42TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
TW095104276A 2004-08-11 2005-07-28 Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system TW200705872A (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 (1)

Publication Number Publication Date
TW200705872A true TW200705872A (en) 2007-02-01

Family

ID=35799854

Family Applications (3)

Application Number Title Priority Date Filing Date
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
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

Family Applications Before (2)

Application Number Title Priority Date Filing Date
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
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

Country Status (12)

Country Link
US (1) US20060034244A1 (zh)
EP (2) EP2187554A1 (zh)
JP (1) JP2008510374A (zh)
KR (2) KR20070067705A (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) TW201004195A (zh)
WO (1) WO2006020400A2 (zh)

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Also Published As

Publication number Publication date
AU2005274162A1 (en) 2006-02-23
TW200623697A (en) 2006-07-01
WO2006020400A3 (en) 2006-12-07
EP2187554A1 (en) 2010-05-19
WO2006020400A2 (en) 2006-02-23
BRPI0515018A (pt) 2008-07-01
KR20070067705A (ko) 2007-06-28
TWI305094B (en) 2009-01-01
IL181026A0 (en) 2007-07-04
MX2007001709A (es) 2007-04-16
CA2576481A1 (en) 2006-02-23
AU2005274162B2 (en) 2008-08-14
EP1779571A4 (en) 2007-12-19
KR20070059086A (ko) 2007-06-11
EP1779571A2 (en) 2007-05-02
JP2008510374A (ja) 2008-04-03
US20060034244A1 (en) 2006-02-16
AU2008243233A1 (en) 2008-12-04
TW201004195A (en) 2010-01-16
NO20071261L (no) 2007-03-08

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