JP3769298B2 - Ofdm信号の伝送のため搬送波分離を改良する方法及び回路配置 - Google Patents
Ofdm信号の伝送のため搬送波分離を改良する方法及び回路配置 Download PDFInfo
- Publication number
- JP3769298B2 JP3769298B2 JP50011697A JP50011697A JP3769298B2 JP 3769298 B2 JP3769298 B2 JP 3769298B2 JP 50011697 A JP50011697 A JP 50011697A JP 50011697 A JP50011697 A JP 50011697A JP 3769298 B2 JP3769298 B2 JP 3769298B2
- Authority
- JP
- Japan
- Prior art keywords
- symbol
- interval
- length
- signal
- fft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 title claims description 12
- 230000002123 temporal effect Effects 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims 1
- 239000000969 carrier Substances 0.000 abstract description 15
- 238000001914 filtration Methods 0.000 abstract description 14
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000004044 response Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
-
- 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
-
- 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
- H04L27/2627—Modulators
- H04L27/2644—Modulators with oversampling
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mathematical Physics (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Noise Elimination (AREA)
- Television Systems (AREA)
- Polyamides (AREA)
- Selective Calling Equipment (AREA)
- Radio Transmission System (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19520353.4 | 1995-06-07 | ||
| DE19520353A DE19520353A1 (de) | 1995-06-07 | 1995-06-07 | Verfahren und Schaltungsanordnung zur Verbesserung des Empfangsverhaltens bei der Übertragung von digitalen Signalen |
| PCT/EP1996/002209 WO1996041458A1 (de) | 1995-06-07 | 1996-05-23 | Verfahren und schaltungsanordnung zur verbesserung der trägertrennung bei der übertragung von ofdm signalen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH11506590A JPH11506590A (ja) | 1999-06-08 |
| JPH11506590A5 JPH11506590A5 (enExample) | 2004-07-08 |
| JP3769298B2 true JP3769298B2 (ja) | 2006-04-19 |
Family
ID=7763574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50011697A Expired - Fee Related JP3769298B2 (ja) | 1995-06-07 | 1996-05-23 | Ofdm信号の伝送のため搬送波分離を改良する方法及び回路配置 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6088327A (enExample) |
| EP (1) | EP0830771B1 (enExample) |
| JP (1) | JP3769298B2 (enExample) |
| KR (1) | KR100377785B1 (enExample) |
| CN (1) | CN1153425C (enExample) |
| AT (1) | ATE405079T1 (enExample) |
| BR (1) | BR9608613B1 (enExample) |
| DE (2) | DE19520353A1 (enExample) |
| MX (1) | MX9709523A (enExample) |
| WO (1) | WO1996041458A1 (enExample) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7274652B1 (en) * | 2000-06-02 | 2007-09-25 | Conexant, Inc. | Dual packet configuration for wireless communications |
| FI101658B (fi) * | 1996-12-12 | 1998-07-31 | Nokia Telecommunications Oy | Vastaanottomenetelmä ja vastaanotin |
| GB9709023D0 (en) * | 1997-05-02 | 1997-06-25 | British Broadcasting Corp | Many-carrier transmission system and a receiver therefor |
| FI103235B (fi) | 1997-06-26 | 1999-05-14 | Nokia Telecommunications Oy | Häiriönpoistomenetelmä OFDM-radiovastaanottimessa |
| DE69737018T2 (de) | 1997-09-04 | 2007-06-28 | Sony Deutschland Gmbh | Übertragungssystem für OFDM-Signalen mit optimierter Synchronisation |
| USRE43703E1 (en) | 1997-09-04 | 2012-10-02 | Sony Deutschland Gmbh | Transmission system for OFDM-signals with optimized synchronization |
| DE19738780A1 (de) | 1997-09-04 | 1999-03-11 | Thomson Brandt Gmbh | Verfahren und Schaltungsanordnung zur Korrektur von Phasen- und/oder Frequenzfehlern digitaler Multicarrier-Signale |
| KR100234330B1 (ko) * | 1997-09-30 | 1999-12-15 | 윤종용 | Ofdm 시스템 수신기의 보호 구간 종류 검출장치 및 그 방법 |
| EP2254300B1 (en) | 1998-01-06 | 2013-05-15 | Mosaid Technologies Incorporated | Multicarrier modulation system with variable symbol rates |
| SE514016C2 (sv) * | 1998-02-21 | 2000-12-11 | Telia Ab | Ett telekommunikationssystem innefattande åtminstone två VDSL-system jämte ett modem och en metod i ett sådant telekommunikationssystem |
| US6700936B1 (en) | 1998-05-05 | 2004-03-02 | British Broadcasting Corporation | Many-carrier transmission system and a receiver therefor |
| US6442221B1 (en) * | 1998-09-22 | 2002-08-27 | Zenith Electronics Corporation | Ghost eliminating equalizer |
| AT408396B (de) * | 1998-12-21 | 2001-11-26 | Ericsson Austria Ag | Verfahren zur übertragung von daten |
| JP2000244441A (ja) * | 1998-12-22 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Ofdm送受信装置 |
| US6539063B1 (en) * | 1999-02-18 | 2003-03-25 | Ibiquity Digital Corporation | System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system |
| JP2000269917A (ja) * | 1999-03-12 | 2000-09-29 | Sony Corp | 送信装置および方法、並びに提供媒体 |
| FI116643B (fi) * | 1999-11-15 | 2006-01-13 | Nokia Corp | Kohinan vaimennus |
| US7020074B1 (en) * | 2000-04-03 | 2006-03-28 | Nortel Networks Limited | Synchronization method and apparatus for frequency division multiplexed telecommunication systems |
| US8363744B2 (en) | 2001-06-10 | 2013-01-29 | Aloft Media, Llc | Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks |
| US7058140B2 (en) | 2000-06-16 | 2006-06-06 | Smart Kevin J | Sliding-window multi-carrier frequency division multiplexing system |
| EP1317831A2 (de) | 2000-09-12 | 2003-06-11 | Siemens Aktiengesellschaft | Verfahren und ofdm-empfänger zum verringern des einflusses harmonischer störungen auf ofdm-übertragungssysteme |
| US6654408B1 (en) | 2000-10-27 | 2003-11-25 | Wisconsin Alumni Research Foundation | Method and system for multi-carrier multiple access reception in the presence of imperfections |
| WO2002091599A2 (en) * | 2001-05-08 | 2002-11-14 | Comsat Corporation | Method and apparatus for measuring adjacent satellite interference |
| US7327794B2 (en) * | 2002-06-24 | 2008-02-05 | Intellon Corporation | Method and apparatus for detecting a jammed channel in a block oriented digital communication system |
| US7471903B1 (en) | 2002-06-26 | 2008-12-30 | Nortel Networks Limited | Optical communication system |
| KR20040009938A (ko) * | 2002-07-26 | 2004-01-31 | 주식회사 오픈솔루션 | 초기심볼 동기 검출장치 및 그 방법 |
| DE10239810A1 (de) | 2002-08-29 | 2004-03-11 | Siemens Ag | Verfahren und Sendeeinrichtung zum Übertragen von Daten in einem Mehrträgersystem |
| US7400573B2 (en) * | 2003-04-29 | 2008-07-15 | Intel Corporation | Dynamic allocation of cyclic extension in orthogonal frequency division multiplexing systems |
| DE102004056478B3 (de) * | 2004-11-23 | 2006-04-06 | Infineon Technologies Ag | Verfahren und Vorrichtung zum Empfang von modulierten analogen Signalen |
| KR100703523B1 (ko) | 2005-01-17 | 2007-04-03 | 삼성전자주식회사 | 직교 주파수 분할 다중 수신기에서 에러 벡터 크기를감소시키기 위한 방법 및 장치 |
| EP1699197A1 (en) * | 2005-01-27 | 2006-09-06 | Alcatel | Method for sending channel quality information in a multi-carrier radio communication system, corresponding mobile terminal and base station |
| US7706428B2 (en) * | 2005-04-21 | 2010-04-27 | Telefonaktiebolaget L M Ericsson (Publ) | Low complexity inter-carrier interference cancellation |
| EP1786133B1 (en) * | 2005-11-15 | 2008-10-22 | Alcatel Lucent | Method for sending channel quality information in a multi-carrier radio communication system, corresponding user terminal and base station |
| US20080025420A1 (en) * | 2006-07-25 | 2008-01-31 | Legend Silicon | Precursor detection using correlation in time-domain in an ofdm communications system |
| US8433014B2 (en) | 2007-02-15 | 2013-04-30 | Mitsubishi Electric Corporation | Receiving apparatus and receiving method |
| CN101068233B (zh) * | 2007-07-05 | 2012-01-11 | 华为技术有限公司 | 一种降低信号峰均比的方法和装置 |
| US20090279619A1 (en) * | 2008-05-08 | 2009-11-12 | Legend Silicon Corp. | Method and apparatus for cell edge transmission performance enhancement for tds-ofdm |
| JP2014064200A (ja) * | 2012-09-21 | 2014-04-10 | Radio Engineering & Electronics Association | 無線通信システム、受信装置、及び受信方法 |
| EP3050391B1 (en) * | 2013-09-27 | 2020-08-05 | Telefonaktiebolaget LM Ericsson (publ) | Methods, apparatuses, and computer program products for generating fractional guard periods |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794556A (en) * | 1984-09-19 | 1988-12-27 | Massachusetts Institute Of Technology | Method and apparatus for sampling in-phase and quadrature components |
| DE3730399A1 (de) * | 1987-09-10 | 1989-03-23 | Armin Wittneben | Verfahren und vorrichtung zur uebertragung eines digitalsignals |
| FR2658018A1 (fr) * | 1990-02-06 | 1991-08-09 | France Etat | Dispositif de reception de donnees numeriques a entrelacement temps-frequence, notamment pour la radiodiffusion a haut debit vers des mobiles a fenetre temporelle de nyquist. |
| US5357502A (en) * | 1990-02-06 | 1994-10-18 | France Telecom And Telediffusion De France Sa | Device for the reception of digital data time frequency interlacing, notably for radio broadcasting at high bit rate towards mobile receivers with nyquist temporal window |
| DE4138770A1 (de) * | 1991-11-26 | 1993-05-27 | Daimler Benz Ag | Verfahren zur digitalen datenuebertragung im nullsymbol des cofdm-modulationsverfahrens |
| EP0562868A3 (en) * | 1992-03-27 | 1994-07-06 | Wi Lan Inc | Method and apparatus for multiple access between tansceivers in wireless communication using OFDM spread spectrum. |
| US5396489A (en) * | 1992-10-26 | 1995-03-07 | Motorola Inc. | Method and means for transmultiplexing signals between signal terminals and radio frequency channels |
| CA2115118A1 (en) * | 1993-02-08 | 1994-08-09 | Arie Geert Cornelis Koppelaar | Method of transmitting a data stream, transmitter and receiver |
| EP0613267A3 (en) * | 1993-02-08 | 1996-12-04 | Philips Nv | OFDM system with crosstalk reduction. |
| US5537435A (en) * | 1994-04-08 | 1996-07-16 | Carney; Ronald | Transceiver apparatus employing wideband FFT channelizer with output sample timing adjustment and inverse FFT combiner for multichannel communication network |
-
1995
- 1995-06-07 DE DE19520353A patent/DE19520353A1/de not_active Withdrawn
-
1996
- 1996-05-23 MX MX9709523A patent/MX9709523A/es not_active IP Right Cessation
- 1996-05-23 JP JP50011697A patent/JP3769298B2/ja not_active Expired - Fee Related
- 1996-05-23 EP EP96916152A patent/EP0830771B1/de not_active Expired - Lifetime
- 1996-05-23 AT AT96916152T patent/ATE405079T1/de not_active IP Right Cessation
- 1996-05-23 KR KR1019970709082A patent/KR100377785B1/ko not_active Expired - Fee Related
- 1996-05-23 US US08/952,436 patent/US6088327A/en not_active Expired - Lifetime
- 1996-05-23 DE DE59611482T patent/DE59611482D1/de not_active Expired - Lifetime
- 1996-05-23 CN CNB961943289A patent/CN1153425C/zh not_active Expired - Fee Related
- 1996-05-23 BR BRPI9608613-0A patent/BR9608613B1/pt not_active IP Right Cessation
- 1996-05-23 WO PCT/EP1996/002209 patent/WO1996041458A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| BR9608613A (pt) | 1999-06-29 |
| EP0830771A1 (de) | 1998-03-25 |
| CN1153425C (zh) | 2004-06-09 |
| EP0830771B1 (de) | 2008-08-13 |
| JPH11506590A (ja) | 1999-06-08 |
| MX9709523A (es) | 1998-03-31 |
| BR9608613B1 (pt) | 2010-09-21 |
| WO1996041458A1 (de) | 1996-12-19 |
| US6088327A (en) | 2000-07-11 |
| DE19520353A1 (de) | 1996-12-12 |
| KR19990022601A (ko) | 1999-03-25 |
| KR100377785B1 (ko) | 2003-05-17 |
| DE59611482D1 (de) | 2008-09-25 |
| ATE405079T1 (de) | 2008-08-15 |
| CN1186583A (zh) | 1998-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3769298B2 (ja) | Ofdm信号の伝送のため搬送波分離を改良する方法及び回路配置 | |
| US6185257B1 (en) | Method for simplifying the demodulation in multiple carrier transmission system | |
| US6657950B1 (en) | Optimal filtering and upconversion in OFDM systems | |
| US9130810B2 (en) | OFDM communications methods and apparatus | |
| US6992972B2 (en) | Frequency division multiplexing system with selectable rate | |
| EP0906656B1 (en) | Dsp implementation of a cellular base station receiver | |
| Renfors et al. | Analysis and design of efficient and flexible fast-convolution based multirate filter banks | |
| JP4421117B2 (ja) | Ofdmシンボルの受信においてチャンネルの直交性を維持するための窓関数 | |
| US8121204B2 (en) | OFDM receivers | |
| US20050008094A1 (en) | Method and circuit for crest factor reduction | |
| JP2918857B2 (ja) | デジタルセンターラインフィルタ | |
| GB2365714A (en) | Minimising effects of inter-symbol interference in receiver | |
| JPH11251969A (ja) | 周波数ホッピングスペクトラム拡散方式の受信装置 | |
| US20080279309A1 (en) | Multi-Band DMT Receiver | |
| Kang et al. | OFDM system with linear-phase transmultiplexer | |
| JP3346832B2 (ja) | デジタル処理型復調装置 | |
| JP2001127818A (ja) | デジタル信号処理方法 | |
| JPH11512578A (ja) | 分数n位相制御ループによつて変換発振器信号が合成される伝送方法 | |
| JP2000031864A (ja) | 拡散変調信号受信装置 | |
| JP2002507337A (ja) | 多搬送波伝送システムにおいてデータを部分的に変調及び復調するための改善された方法 | |
| Rubenstein | An Adaptive Digital DPSK Chirp Detector | |
| HK1157092B (en) | Ofdm communications methods and apparatus | |
| HK1155851B (en) | Signaling method in an ofdm multiple access system | |
| HK1155851A1 (en) | Signaling method in an ofdm multiple access system | |
| HK1155868B (en) | Signaling method and apparatus in an ofdm multiple access system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050415 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050524 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050824 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060117 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060206 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100210 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100210 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110210 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120210 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130210 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130210 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140210 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |