WO2009041671A1 - Cfoおよびi/qインバランスの補正係数の算出方法とそれを用いた補正方法とパイロット信号の送信方法 - Google Patents
Cfoおよびi/qインバランスの補正係数の算出方法とそれを用いた補正方法とパイロット信号の送信方法 Download PDFInfo
- Publication number
- WO2009041671A1 WO2009041671A1 PCT/JP2008/067571 JP2008067571W WO2009041671A1 WO 2009041671 A1 WO2009041671 A1 WO 2009041671A1 JP 2008067571 W JP2008067571 W JP 2008067571W WO 2009041671 A1 WO2009041671 A1 WO 2009041671A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cfo
- pilot signal
- imbalance
- signal transmission
- same
- Prior art date
Links
Classifications
-
- 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
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
- H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
- H04L27/3863—Compensation for quadrature error in the received signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0016—Stabilisation of local oscillators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0089—In-band signals
- H04L2027/0091—Continuous signals
-
- 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
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Transmission System (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08832924.8A EP2194665B1 (en) | 2007-09-27 | 2008-09-27 | CFO and I/Q imbalance estimation and compensation |
CN200880109427A CN101809910A (zh) | 2007-09-27 | 2008-09-27 | Cfo和i/q不均衡的校正系数的算出方法、使用该校正系数的校正方法、以及导频信号的发送方法 |
US12/679,581 US20100208783A1 (en) | 2007-09-27 | 2008-09-27 | Method for calculating cfo and i/q imbalance compensation coefficients, compensation method using the same, and method for transmitting pilot signal |
JP2009534448A JP5344701B2 (ja) | 2007-09-27 | 2008-09-27 | Cfoおよびi/qインバランスの補正係数の算出方法とそれを用いた補正方法とパイロット信号の送信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007252736 | 2007-09-27 | ||
JP2007-252736 | 2007-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009041671A1 true WO2009041671A1 (ja) | 2009-04-02 |
Family
ID=40511551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/067571 WO2009041671A1 (ja) | 2007-09-27 | 2008-09-27 | Cfoおよびi/qインバランスの補正係数の算出方法とそれを用いた補正方法とパイロット信号の送信方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100208783A1 (ja) |
EP (1) | EP2194665B1 (ja) |
JP (1) | JP5344701B2 (ja) |
KR (1) | KR20100058584A (ja) |
CN (1) | CN101809910A (ja) |
WO (1) | WO2009041671A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010061532A1 (ja) * | 2008-11-01 | 2010-06-03 | 公立大学法人大阪府立大学 | Ofdm通信システムにおけるアナログ損失のハイブリッドドメイン補償パラメータの求め方と補償方法 |
JP2011503946A (ja) * | 2007-10-31 | 2011-01-27 | アイメック | 相補ゴーレイシーケンス対を用いて送受信器非理想性を決定し補償するための方法 |
JP2012044550A (ja) * | 2010-08-20 | 2012-03-01 | Mitsubishi Electric Corp | 送信装置、受信装置および通信システム |
JP2022524455A (ja) * | 2020-02-03 | 2022-05-02 | ▲騰▼▲訊▼科技(深▲セン▼)有限公司 | 側波帯抑圧方法、装置、コンピュータ機器及びコンピュータプログラム |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102279402B (zh) * | 2011-03-18 | 2013-08-07 | 哈尔滨工业大学 | 一种gnss数据/导频混合信号的频域相干联合捕获方法 |
US8971465B2 (en) * | 2012-03-30 | 2015-03-03 | Qualcomm Incorporated | Receiver-side estimation of and compensation for signal impairments |
US9143365B2 (en) | 2013-01-30 | 2015-09-22 | Qualcomm Incorporated | Channel estimation using averaging and interpolation |
GB2537800B (en) * | 2014-12-22 | 2018-05-30 | Imagination Tech Ltd | IQ imbalance estimator |
US11012273B1 (en) * | 2019-12-31 | 2021-05-18 | Hughes Network Systems, Llc | Compensating for frequency-dependent I-Q phase imbalance |
US20210229952A1 (en) * | 2020-01-24 | 2021-07-29 | Otis Elevator Company | Elevator car communication system |
US11627531B2 (en) * | 2020-11-29 | 2023-04-11 | Silicon Laboratories Inc. | WLAN receiver early power down based on center frequency offset detection |
CN112888025B (zh) * | 2021-01-12 | 2022-11-11 | 深圳市极致汇仪科技有限公司 | 一种基于扩展带宽对接收的wifi数据处理的方法及系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11243434A (ja) * | 1998-02-26 | 1999-09-07 | Matsushita Electric Ind Co Ltd | 変調方式とそれを用いた無線通信システム |
JP2000316031A (ja) * | 1999-04-30 | 2000-11-14 | Advantest Corp | 直交変調信号評価方法及びこの評価方法を用いた直交変調信号評価装置 |
JP2003032314A (ja) * | 2001-07-18 | 2003-01-31 | Fujitsu General Ltd | 位相誤差補正方法および装置 |
WO2003101064A1 (en) * | 2002-05-23 | 2003-12-04 | Interuniversitair Microelektronica Centrum Vzw | Method and device for estimating and compensating iq imbalance |
WO2007049760A1 (ja) * | 2005-10-28 | 2007-05-03 | Matsushita Electric Industrial Co., Ltd. | 送信装置、受信装置、送信方法、受信方法及び無線通信システム |
JP2007180618A (ja) * | 2005-12-26 | 2007-07-12 | Toshiba Corp | Ofdm信号の送信方法と送信装置及びofdm信号の受信装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1628452A3 (en) * | 1998-01-30 | 2006-05-10 | Matsushita Electric Industrial Co., Ltd. | Modulation method and radio communication system |
US7020226B1 (en) * | 2002-04-04 | 2006-03-28 | Nortel Networks Limited | I/Q distortion compensation for the reception of OFDM signals |
US7652976B2 (en) * | 2007-05-07 | 2010-01-26 | Industrial Technology Research Institute | Method for estimating and compensating IQ imbalance in OFDM systems |
-
2008
- 2008-09-27 WO PCT/JP2008/067571 patent/WO2009041671A1/ja active Application Filing
- 2008-09-27 KR KR1020107006354A patent/KR20100058584A/ko active IP Right Grant
- 2008-09-27 US US12/679,581 patent/US20100208783A1/en not_active Abandoned
- 2008-09-27 JP JP2009534448A patent/JP5344701B2/ja not_active Expired - Fee Related
- 2008-09-27 EP EP08832924.8A patent/EP2194665B1/en not_active Not-in-force
- 2008-09-27 CN CN200880109427A patent/CN101809910A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11243434A (ja) * | 1998-02-26 | 1999-09-07 | Matsushita Electric Ind Co Ltd | 変調方式とそれを用いた無線通信システム |
JP2000316031A (ja) * | 1999-04-30 | 2000-11-14 | Advantest Corp | 直交変調信号評価方法及びこの評価方法を用いた直交変調信号評価装置 |
JP2003032314A (ja) * | 2001-07-18 | 2003-01-31 | Fujitsu General Ltd | 位相誤差補正方法および装置 |
WO2003101064A1 (en) * | 2002-05-23 | 2003-12-04 | Interuniversitair Microelektronica Centrum Vzw | Method and device for estimating and compensating iq imbalance |
WO2007049760A1 (ja) * | 2005-10-28 | 2007-05-03 | Matsushita Electric Industrial Co., Ltd. | 送信装置、受信装置、送信方法、受信方法及び無線通信システム |
JP2007180618A (ja) * | 2005-12-26 | 2007-07-12 | Toshiba Corp | Ofdm信号の送信方法と送信装置及びofdm信号の受信装置 |
Non-Patent Citations (5)
Title |
---|
G. XING; M. SHEN; H. LIU: "Frequency Offset and I/Q Imbalance Compensation for Direct-Conversion Receivers", IEEE TRANS. WIRELESS COMMUN, vol. 4, no. 2, March 2005 (2005-03-01), pages 673 - 680 |
J. K. CAVERS; M. W. LIAO: "Adaptive compensation for imbalance and offset losses in direct conversion transceivers", IEEE TRANS. VEH. TECHNOL., vol. 42, no. 4, November 1993 (1993-11-01), pages 581 - 585 |
M. VALKAMA; M. RENFORS; V. KOIVUNEN: "Advanced methods for I/Q imbalance compensation in communication receivers", IEEE TRANS. SIGNAL PROCESSING, vol. 49, no. 10, October 2001 (2001-10-01), pages 2335 - 2344 |
P. SOTICA; R. MOSES: "Englewood Cliffs", 1997, NJ: PRENTICE-HALL, article "Introduction to Spectral Analysis" |
See also references of EP2194665A4 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011503946A (ja) * | 2007-10-31 | 2011-01-27 | アイメック | 相補ゴーレイシーケンス対を用いて送受信器非理想性を決定し補償するための方法 |
WO2010061532A1 (ja) * | 2008-11-01 | 2010-06-03 | 公立大学法人大阪府立大学 | Ofdm通信システムにおけるアナログ損失のハイブリッドドメイン補償パラメータの求め方と補償方法 |
JP5147089B2 (ja) * | 2008-11-01 | 2013-02-20 | 公立大学法人大阪府立大学 | Ofdm通信システムにおけるアナログ損失のハイブリッドドメイン補償パラメータの求め方と補償方法 |
JP2012044550A (ja) * | 2010-08-20 | 2012-03-01 | Mitsubishi Electric Corp | 送信装置、受信装置および通信システム |
JP2022524455A (ja) * | 2020-02-03 | 2022-05-02 | ▲騰▼▲訊▼科技(深▲セン▼)有限公司 | 側波帯抑圧方法、装置、コンピュータ機器及びコンピュータプログラム |
JP7258406B2 (ja) | 2020-02-03 | 2023-04-17 | ▲騰▼▲訊▼科技(深▲セン▼)有限公司 | 側波帯抑圧方法、装置、コンピュータ機器及びコンピュータプログラム |
Also Published As
Publication number | Publication date |
---|---|
JP5344701B2 (ja) | 2013-11-20 |
US20100208783A1 (en) | 2010-08-19 |
KR20100058584A (ko) | 2010-06-03 |
EP2194665A4 (en) | 2012-09-12 |
EP2194665B1 (en) | 2013-04-24 |
JPWO2009041671A1 (ja) | 2011-01-27 |
CN101809910A (zh) | 2010-08-18 |
EP2194665A1 (en) | 2010-06-09 |
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