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 systemInfo
- 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
Links
Classifications
-
- 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
- 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
- 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
- H04L1/0009—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
- H04L1/0015—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
-
- 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
- H04L5/003—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
- 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
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 |
---|---|---|---|
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 Before (1)
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 |
Family Applications After (1)
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 |
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) |
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-
2005
- 2005-05-06 US US11/123,738 patent/US20060034244A1/en not_active Abandoned
- 2005-07-27 KR KR1020077005403A patent/KR20070059086A/ko not_active Application Discontinuation
- 2005-07-27 EP EP10152509A patent/EP2187554A1/en not_active Withdrawn
- 2005-07-27 JP JP2007525642A patent/JP2008510374A/ja not_active Withdrawn
- 2005-07-27 BR BRPI0515018-3A patent/BRPI0515018A/pt not_active IP Right Cessation
- 2005-07-27 KR KR1020077010443A patent/KR20070067705A/ko not_active Application Discontinuation
- 2005-07-27 CA CA002576481A patent/CA2576481A1/en not_active Abandoned
- 2005-07-27 AU AU2005274162A patent/AU2005274162B2/en not_active Expired - Fee Related
- 2005-07-27 MX MX2007001709A patent/MX2007001709A/es active IP Right Grant
- 2005-07-27 EP EP05781896A patent/EP1779571A4/en not_active Ceased
- 2005-07-27 WO PCT/US2005/026670 patent/WO2006020400A2/en active Search and Examination
- 2005-07-28 TW TW094125662A patent/TWI305094B/zh not_active IP Right Cessation
- 2005-07-28 TW TW095104276A patent/TW200705872A/zh unknown
- 2005-07-28 TW TW097128904A patent/TW201004195A/zh unknown
-
2007
- 2007-01-29 IL IL181026A patent/IL181026A0/en unknown
- 2007-03-08 NO NO20071261A patent/NO20071261L/no not_active Application Discontinuation
-
2008
- 2008-11-13 AU AU2008243233A patent/AU2008243233A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
MX2007001709A (es) | 2007-04-16 |
CA2576481A1 (en) | 2006-02-23 |
TW201004195A (en) | 2010-01-16 |
EP1779571A4 (en) | 2007-12-19 |
KR20070067705A (ko) | 2007-06-28 |
WO2006020400A3 (en) | 2006-12-07 |
WO2006020400A2 (en) | 2006-02-23 |
IL181026A0 (en) | 2007-07-04 |
BRPI0515018A (pt) | 2008-07-01 |
TWI305094B (en) | 2009-01-01 |
NO20071261L (no) | 2007-03-08 |
EP2187554A1 (en) | 2010-05-19 |
AU2008243233A1 (en) | 2008-12-04 |
EP1779571A2 (en) | 2007-05-02 |
JP2008510374A (ja) | 2008-04-03 |
AU2005274162B2 (en) | 2008-08-14 |
US20060034244A1 (en) | 2006-02-16 |
KR20070059086A (ko) | 2007-06-11 |
TW200623697A (en) | 2006-07-01 |
AU2005274162A1 (en) | 2006-02-23 |
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