JP3577754B2 - 通信方法及び装置 - Google Patents
通信方法及び装置 Download PDFInfo
- Publication number
- JP3577754B2 JP3577754B2 JP24169194A JP24169194A JP3577754B2 JP 3577754 B2 JP3577754 B2 JP 3577754B2 JP 24169194 A JP24169194 A JP 24169194A JP 24169194 A JP24169194 A JP 24169194A JP 3577754 B2 JP3577754 B2 JP 3577754B2
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- JP
- Japan
- Prior art keywords
- time
- data
- modulation
- phase
- waveform
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 37
- 238000004891 communication Methods 0.000 title claims description 30
- 239000000969 carrier Substances 0.000 claims description 58
- 238000005070 sampling Methods 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 description 89
- 238000006243 chemical reaction Methods 0.000 description 28
- 238000010586 diagram Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 21
- 230000010354 integration Effects 0.000 description 16
- 230000006870 function Effects 0.000 description 10
- 230000014509 gene expression Effects 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000005428 wave function 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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/2653—Demodulators with direct demodulation of individual subcarriers
-
- 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
-
- 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
- H04L27/2637—Modulators with direct modulation of individual subcarriers
-
- 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
- H04L27/2642—Wavelet transform modulators
-
- 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
Landscapes
- 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)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24169194A JP3577754B2 (ja) | 1994-09-09 | 1994-10-05 | 通信方法及び装置 |
US08/524,215 US6097762A (en) | 1994-09-09 | 1995-09-06 | Communication system |
KR1019950029387A KR100346341B1 (ko) | 1994-09-09 | 1995-09-07 | 통신방식 |
TW084109365A TW275730B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1994-09-09 | 1995-09-07 | |
CN95117132A CN1086876C (zh) | 1994-09-09 | 1995-09-08 | 通信系统 |
MYPI95002685A MY114196A (en) | 1994-09-09 | 1995-09-09 | Communication system |
EP95306327A EP0701345A3 (en) | 1994-09-09 | 1995-09-11 | Multicarrier transmission using differential phases |
US09/137,768 US7239666B1 (en) | 1994-09-09 | 1998-02-13 | Communication system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21631194 | 1994-09-09 | ||
JP6-216311 | 1994-09-09 | ||
JP24169194A JP3577754B2 (ja) | 1994-09-09 | 1994-10-05 | 通信方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08130563A JPH08130563A (ja) | 1996-05-21 |
JP3577754B2 true JP3577754B2 (ja) | 2004-10-13 |
Family
ID=26521360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24169194A Expired - Lifetime JP3577754B2 (ja) | 1994-09-09 | 1994-10-05 | 通信方法及び装置 |
Country Status (7)
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5682376A (en) * | 1994-12-20 | 1997-10-28 | Matsushita Electric Industrial Co., Ltd. | Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor |
US6351497B1 (en) * | 1995-09-06 | 2002-02-26 | Sony Corporation | Communication system |
WO1998000953A1 (en) * | 1996-06-28 | 1998-01-08 | Philips Electronics N.V. | Method for simplifying the demodulation in multiple carrier transmission system |
FR2777145B1 (fr) * | 1998-04-02 | 2000-04-28 | Alsthom Cge Alcatel | Modulateur multiporteuses large bande et procede de programmation correspondant |
KR100620087B1 (ko) * | 1998-07-13 | 2006-09-05 | 소니 가부시끼 가이샤 | 통신방법, 송신기 및 수신기 |
US6061551A (en) * | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US6542722B1 (en) * | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
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 |
GB2347054B (en) * | 1999-02-19 | 2003-12-03 | Adaptive Broadband Ltd | Stabilized precoder for data transmission |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US6873836B1 (en) | 1999-03-03 | 2005-03-29 | Parkervision, Inc. | Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology |
US7110435B1 (en) | 1999-03-15 | 2006-09-19 | Parkervision, Inc. | Spread spectrum applications of universal frequency translation |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US8014724B2 (en) * | 1999-10-21 | 2011-09-06 | Broadcom Corporation | System and method for signal limiting |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
EP1187387A1 (en) * | 2000-09-08 | 2002-03-13 | Alcatel | Multicarrier GSM receiver |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
GB2373148A (en) * | 2001-02-01 | 2002-09-11 | Roke Manor Research | Intra symbol differential modulation of a multi-carrier signal |
US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
GB0320352D0 (en) * | 2003-09-01 | 2003-10-01 | Secr Defence | Digital modulation waveforms for use in ranging systems |
EP1843499B1 (en) * | 2005-01-17 | 2018-04-18 | Sharp Kabushiki Kaisha | Stable transmission and reliable reception of plurality of signal streams in a MIMO communication system |
PL2120365T3 (pl) * | 2005-12-20 | 2012-09-28 | Huawei Tech Co Ltd | Sposób sterowania transmisją, stacja bazowa, jednostka mobilna oraz system komunikacyjny do dywersyfikacji opóźnienia |
CN101498411B (zh) * | 2008-02-01 | 2013-11-06 | 吴伟权 | 可转换嵌入式筒灯发光二极管装置 |
CN102638426A (zh) * | 2012-03-19 | 2012-08-15 | 航天科工深圳(集团)有限公司 | 一种基于频率的通信互连系统及其实现方法 |
US9048964B2 (en) | 2012-10-26 | 2015-06-02 | Deere & Company | Receiver and method for receiving a composite signal |
US8781039B2 (en) | 2012-10-26 | 2014-07-15 | Deere & Company | Receiver and method for receiving a composite signal |
US8942157B2 (en) | 2012-10-26 | 2015-01-27 | Deere & Company | Receiver and method for receiving a composite signal |
US8942264B2 (en) | 2012-10-26 | 2015-01-27 | Deere & Company | Receiver and method for receiving a composite signal |
JP6026924B2 (ja) * | 2013-03-11 | 2016-11-16 | パナソニック株式会社 | 送信装置、受信装置、通信システム、送信方法、及び受信方法 |
EP2995156B1 (en) * | 2013-05-08 | 2020-12-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Improved handling of simultaneous network communication transmission and d2d communication reception or simultaneous network communication reception and d2d communication transmission |
HUE044270T2 (hu) | 2013-05-08 | 2019-10-28 | Ericsson Telefon Ab L M | A hálózati kommunikációs kapcsolatok és a D2D kommunikációs kapcsolatok ütemezési politikájának jobb kiválasztása |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898566A (en) * | 1972-10-02 | 1975-08-05 | Phasecom Corp | Method and apparatus for reducing distortion in multicarrier communication systems |
US4601045A (en) * | 1984-08-03 | 1986-07-15 | Larse Corporation | Modulator-demodulator method and apparatus with efficient bandwidth utilization |
US4641318A (en) * | 1985-04-25 | 1987-02-03 | Bell Communications Research, Inc. | Method for improving the reliability of data transmission over Rayleigh fading channels |
US4837786A (en) * | 1986-08-07 | 1989-06-06 | Comstream Corporation | Technique for mitigating rain fading in a satellite communications system using quadrature phase shift keying |
US5282019A (en) * | 1988-10-03 | 1994-01-25 | Carlo Basile | Method and apparatus for the transmission and reception of a multicarrier digital television signal |
JP2675890B2 (ja) * | 1990-03-06 | 1997-11-12 | キヤノン株式会社 | スペクトラム拡散通信装置 |
US5063574A (en) * | 1990-03-06 | 1991-11-05 | Moose Paul H | Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels |
JP2761281B2 (ja) * | 1990-05-17 | 1998-06-04 | 富士通株式会社 | マルチキャリア通信システムの暗号化通信方式 |
DE4114274A1 (de) * | 1991-05-02 | 1992-11-05 | Daimler Benz Ag | Verfahren und anordnung zur differentiellen modulation von signalen in einem mehrkanal-uebertragungssystem |
US5243629A (en) * | 1991-09-03 | 1993-09-07 | At&T Bell Laboratories | Multi-subcarrier modulation for hdtv transmission |
US5282222A (en) * | 1992-03-31 | 1994-01-25 | Michel Fattouche | Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum |
GB9218874D0 (en) * | 1992-09-07 | 1992-10-21 | British Broadcasting Corp | Improvements relating to the transmission of frequency division multiplex signals |
JP3421880B2 (ja) * | 1994-10-05 | 2003-06-30 | ソニー株式会社 | 復調装置 |
US5663986A (en) * | 1996-03-25 | 1997-09-02 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus and method of transmitting data over a coaxial cable in a noisy environment |
-
1994
- 1994-10-05 JP JP24169194A patent/JP3577754B2/ja not_active Expired - Lifetime
-
1995
- 1995-09-06 US US08/524,215 patent/US6097762A/en not_active Expired - Lifetime
- 1995-09-07 TW TW084109365A patent/TW275730B/zh not_active IP Right Cessation
- 1995-09-07 KR KR1019950029387A patent/KR100346341B1/ko not_active Expired - Lifetime
- 1995-09-08 CN CN95117132A patent/CN1086876C/zh not_active Expired - Lifetime
- 1995-09-09 MY MYPI95002685A patent/MY114196A/en unknown
- 1995-09-11 EP EP95306327A patent/EP0701345A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN1086876C (zh) | 2002-06-26 |
EP0701345A3 (en) | 1999-09-22 |
JPH08130563A (ja) | 1996-05-21 |
MY114196A (en) | 2002-08-30 |
EP0701345A2 (en) | 1996-03-13 |
CN1130827A (zh) | 1996-09-11 |
KR100346341B1 (ko) | 2002-11-29 |
TW275730B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1996-05-11 |
KR960012784A (ko) | 1996-04-20 |
US6097762A (en) | 2000-08-01 |
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