KR100538986B1 - 진폭-위상보정회로,수신장치및송신장치 - Google Patents
진폭-위상보정회로,수신장치및송신장치 Download PDFInfo
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- KR100538986B1 KR100538986B1 KR1019970038866A KR19970038866A KR100538986B1 KR 100538986 B1 KR100538986 B1 KR 100538986B1 KR 1019970038866 A KR1019970038866 A KR 1019970038866A KR 19970038866 A KR19970038866 A KR 19970038866A KR 100538986 B1 KR100538986 B1 KR 100538986B1
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- 238000012937 correction Methods 0.000 title claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000000969 carrier Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
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- 230000002411 adverse Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
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- 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
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims (5)
- 직교 주파수 분할 멀티플렉서(OFDM)파를 이용하여 통신을 행하는 장치의 보정방법에 있어서,다운 컨버터에서 주파수 변환된 아날로그 신호가 로패스 필터를 통과하는 로패스 필터링 단계와,상기 로패스 필터링 단계의 출력신호를 디지털 신호로 변환하기 위한 아날로그/디지털 변환단계와,상기 아날로그/디지털 변환단계의 출력신호를 소정의 포맷 신호로 변환하기 위해 푸리에(Fourier) 변환을 행하는 푸리에 변환단계와,상기 푸리에 변환단계에서 출력된 디지털 신화와 상기 로패스 필터의 진폭 및 위성특성에 의거하여 미리 저장된 보정값의 곱셈을 행함으로써 상기 로패스 필터를 통과할 때 발생된 진폭 및 위상의 엇갈림을 보정하기 위한 보정단게를 포함하는 것을 특징으로 하는 직교 주파수 분할 멀티플레서(OFMD)파를 이용하여 통신을 행하는 장치의 보정방법.
- 직교 주파수 분할 멀티플렉서(OFDM)파를 이용하여 통신을 행하는 장치를 갖춘 신호처리장치에 있어서,다운 컨버터에서 주파수 변환된 아날로그 신호를 공급받는 로패스 필터와,상기 로패스 필터의 출력신호를 디지털 신호로 변환하기 위한 아날로그/디지털 변환수단과,상기 아날로그/디지털 변환수단의 출력신호를 소정 포맷 신호로 변환하기 위해 푸리에 변환을 행하는 푸리에 변환수단과,상기 푸리에 변환수단에서 출력신호와 상기 로패스 필터의 진폭 및 위상특성에 의거하여 미리 저장된 보정값의 곱셈을 행함으로써 상기 로패스 필터를 통과할 때 발생된 진폭 및 위상의 엇갈림을 보정하기 위한 보정수단을 포함하며,상기 보정수단은 보정값을 미리 저장하기 위한 저장수단과, 상기 보정값을 보정될 신호와 곱하기 위한 곱셈수단으로 구성된 것을 특징으로 하는 직교 주파수 분할 멀티플렉서(OFDM)파를 이용하여 통신을 행하는 장치를 갖춘 신호처리장치.
- 직교 주파수 분할 멀티플렉서(OFDM)파 신호의 수신장치에 있어서,수신된 OFDM파의 신호를 공급받는 로패스 필터와,상기 로패스 필터의 출력신호를 디지털 신호로 변환하기 위한 아날로그/디지털 변환수단과,상기 아날로그/디지털 변환수단의 출력신호를 소정 포맷 신호로 변환하기 위해 푸리에 변환을 행하는 푸리에 변환수단관,상기 푸리에 변환수단의 출력신호와 상기 로패스 필터의 진폭 및 위상 특성에 의거하여 미리 저장된 보정값의 곱셈을 행함으로써 상기 로패스 필터의 진폭 및 위상의 엇갈림을 보정하기 위한 보정 수단을 포함하며,상기 보정수단은 보정값을 미리 저장하기 위한 저장수단과, 상기 보정값을 보정될 신호와 곱하기 위한 곱셈수단으로 구성된 것을 특징으로 하는 직교 주파수 분할 멀티플렉서(OFDM)파 신호의 수신장치.
- 제 3항에 있어서,상기 OFDM파 신호는 각 부 반송파(sub-carrier) 간의 위상차로 변조된 정보인 것을 특징으로 하는 수신장치.
- 제 3항에 있어서,상기 보정값은 실수부와 허수부로 이루어지며, 상기 곱셈수단은 복소수 곱셈을 행하는 것을 특징으로 하는 수신장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP96-222934 | 1996-08-23 | ||
JP8222934A JPH1065588A (ja) | 1996-08-23 | 1996-08-23 | 振幅・位相補正回路、受信装置及び送信装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050022880A Division KR100554048B1 (ko) | 1996-08-23 | 2005-03-18 | 진폭-위상 보정회로, 수신장치 및 송신장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980018689A KR19980018689A (ko) | 1998-06-05 |
KR100538986B1 true KR100538986B1 (ko) | 2006-03-17 |
Family
ID=16790165
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970038866A Expired - Fee Related KR100538986B1 (ko) | 1996-08-23 | 1997-08-14 | 진폭-위상보정회로,수신장치및송신장치 |
KR1020050022880A Expired - Fee Related KR100554048B1 (ko) | 1996-08-23 | 2005-03-18 | 진폭-위상 보정회로, 수신장치 및 송신장치 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050022880A Expired - Fee Related KR100554048B1 (ko) | 1996-08-23 | 2005-03-18 | 진폭-위상 보정회로, 수신장치 및 송신장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6070056A (ko) |
EP (1) | EP0825743A3 (ko) |
JP (1) | JPH1065588A (ko) |
KR (2) | KR100538986B1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4284774B2 (ja) * | 1999-09-07 | 2009-06-24 | ソニー株式会社 | 送信装置、受信装置、通信システム、送信方法及び通信方法 |
EP1148659B1 (en) * | 2000-04-18 | 2005-07-27 | Sony International (Europe) GmbH | OFDM diversity transmission |
US20030128660A1 (en) * | 2002-01-09 | 2003-07-10 | Atsushi Ito | OFDM communications apparatus, OFDM communications method, and OFDM communications program |
EP1774684B1 (en) * | 2004-08-03 | 2012-04-18 | Agency for Science, Technology and Research | Receiver and method for receiving a digital signal |
FR2890808A1 (fr) * | 2005-09-13 | 2007-03-16 | France Telecom | Caracterisation de spectre pour equipements de communication |
KR100837114B1 (ko) | 2006-10-30 | 2008-06-11 | 지씨티 세미컨덕터 인코포레이티드 | 오버샘플링 아날로그-디지털 변환기를 이용한 다중 복조경로 ofdm 수신회로 |
CN101599941B (zh) * | 2009-04-24 | 2012-05-30 | 新邮通信设备有限公司 | 一种正交频分复用信号的产生方法和装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH042226A (ja) * | 1990-04-19 | 1992-01-07 | Nec Corp | 通信システムにおける自動等化システム |
KR930001563A (ko) * | 1991-06-29 | 1993-01-16 | 정용문 | 위상편차 검출 및 보상방법 |
WO1995003656A1 (en) * | 1993-07-20 | 1995-02-02 | Telia Ab | Method and apparatus for synchronization in digital transmission systems of the ofdm type |
KR950010429A (ko) * | 1993-09-27 | 1995-04-28 | 이헌조 | 동기 및 비동기 복합 수신장치 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7213388A (ko) * | 1971-12-01 | 1974-04-08 | ||
JPH01314006A (ja) * | 1988-06-13 | 1989-12-19 | Fujitsu Ltd | 歪補償回路 |
US4943980A (en) * | 1989-05-02 | 1990-07-24 | Intelligent Modem Corporation | Multi-carrier high speed modem |
US5128964A (en) * | 1990-10-10 | 1992-07-07 | Intelligent Modem Corporation | Modulation method and apparatus for multicarrier data transmission |
JP2781946B2 (ja) * | 1993-04-27 | 1998-07-30 | シャープ株式会社 | 直交周波数分割多重信号発生器 |
US5444697A (en) * | 1993-08-11 | 1995-08-22 | The University Of British Columbia | Method and apparatus for frame synchronization in mobile OFDM data communication |
JP3421880B2 (ja) * | 1994-10-05 | 2003-06-30 | ソニー株式会社 | 復調装置 |
JPH09223990A (ja) * | 1996-02-19 | 1997-08-26 | Fujitsu Ltd | 伝送装置 |
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1996
- 1996-08-23 JP JP8222934A patent/JPH1065588A/ja active Pending
-
1997
- 1997-08-13 US US08/910,661 patent/US6070056A/en not_active Expired - Lifetime
- 1997-08-14 KR KR1019970038866A patent/KR100538986B1/ko not_active Expired - Fee Related
- 1997-08-22 EP EP97306465A patent/EP0825743A3/en not_active Ceased
-
2005
- 2005-03-18 KR KR1020050022880A patent/KR100554048B1/ko not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH042226A (ja) * | 1990-04-19 | 1992-01-07 | Nec Corp | 通信システムにおける自動等化システム |
KR930001563A (ko) * | 1991-06-29 | 1993-01-16 | 정용문 | 위상편차 검출 및 보상방법 |
WO1995003656A1 (en) * | 1993-07-20 | 1995-02-02 | Telia Ab | Method and apparatus for synchronization in digital transmission systems of the ofdm type |
KR950010429A (ko) * | 1993-09-27 | 1995-04-28 | 이헌조 | 동기 및 비동기 복합 수신장치 |
Also Published As
Publication number | Publication date |
---|---|
KR19980018689A (ko) | 1998-06-05 |
US6070056A (en) | 2000-05-30 |
KR100554048B1 (ko) | 2006-02-22 |
JPH1065588A (ja) | 1998-03-06 |
EP0825743A3 (en) | 2001-02-07 |
EP0825743A2 (en) | 1998-02-25 |
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