FI945590A - QAM-signaalin koodus/dekoodaus järjestelmä - Google Patents
QAM-signaalin koodus/dekoodaus järjestelmä Download PDFInfo
- Publication number
- FI945590A FI945590A FI945590A FI945590A FI945590A FI 945590 A FI945590 A FI 945590A FI 945590 A FI945590 A FI 945590A FI 945590 A FI945590 A FI 945590A FI 945590 A FI945590 A FI 945590A
- Authority
- FI
- Finland
- Prior art keywords
- encoding
- decoding system
- qam signal
- qam
- signal
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
- H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
- H04L27/3438—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying generalised cross constellation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Error Detection And Correction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/889,805 US5315617A (en) | 1992-05-29 | 1992-05-29 | QAM encoding for high-definition television system |
PCT/US1993/004238 WO1993025034A1 (fr) | 1992-05-29 | 1993-05-11 | Systeme de codage/decodage de signaux de modulation d'amplitude en quadrature (maq) |
Publications (2)
Publication Number | Publication Date |
---|---|
FI945590A0 FI945590A0 (fi) | 1994-11-28 |
FI945590A true FI945590A (fi) | 1995-01-27 |
Family
ID=25395830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI945590A FI945590A (fi) | 1992-05-29 | 1994-11-28 | QAM-signaalin koodus/dekoodaus järjestelmä |
Country Status (15)
Country | Link |
---|---|
US (1) | US5315617A (fr) |
EP (1) | EP0643894B1 (fr) |
JP (1) | JP3609085B2 (fr) |
KR (1) | KR100282688B1 (fr) |
CN (1) | CN1051428C (fr) |
AU (1) | AU4234093A (fr) |
CA (1) | CA2136615C (fr) |
DE (1) | DE69320191T2 (fr) |
ES (1) | ES2122009T3 (fr) |
FI (1) | FI945590A (fr) |
MY (1) | MY108853A (fr) |
PL (2) | PL171462B1 (fr) |
SG (1) | SG86970A1 (fr) |
TW (1) | TW221086B (fr) |
WO (1) | WO1993025034A1 (fr) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5559559A (en) * | 1991-06-14 | 1996-09-24 | Wavephore, Inc. | Transmitting a secondary signal with dynamic injection level control |
US5831679A (en) * | 1991-06-14 | 1998-11-03 | Wavephore, Inc. | Network for retrieval and video transmission of information |
US5327237A (en) * | 1991-06-14 | 1994-07-05 | Wavephore, Inc. | Transmitting data with video |
US5387941A (en) * | 1991-06-14 | 1995-02-07 | Wavephore, Inc. | Data with video transmitter |
JPH06343085A (ja) * | 1993-04-07 | 1994-12-13 | Hitachi Ltd | 信号復調復号装置および信号復調復号方法 |
US5565926A (en) * | 1993-05-07 | 1996-10-15 | Philips Electronics North America Corporation | Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants |
US5684834A (en) * | 1993-06-14 | 1997-11-04 | Paradyne Corporation | Simultaneous analog and digital communication using fractional rate encoding |
KR970008417B1 (ko) * | 1994-04-12 | 1997-05-23 | 엘지전자 주식회사 | 에이치디티브이(hdtv)용 채널등화기 |
US5398073A (en) * | 1994-04-12 | 1995-03-14 | At&T Corp. | Concatenated coded vestigial sideband modulation for high definition television |
US6104442A (en) * | 1994-06-28 | 2000-08-15 | Samsung Electronics Co., Ltd. | Radio receiver for receiving both VSB and QAM digital HDTV signals |
US5506636A (en) * | 1994-06-28 | 1996-04-09 | Samsung Electronics Co., Ltd. | HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection |
US5621761A (en) * | 1994-12-09 | 1997-04-15 | General Instrument Corporation Of Delaware | Rotationally invariant trellis coding incorporating transparent binary convolutional codes |
US5606576A (en) * | 1995-01-23 | 1997-02-25 | Northrop Grumman Corporation | Adaptive mode control system for AM compatible digital broadcast |
US5898737A (en) * | 1995-10-16 | 1999-04-27 | Lockheed Martin Corporation | Adaptive digital symbol recovery for amplitude phased keyed digital communication systems |
JP3140974B2 (ja) * | 1996-03-31 | 2001-03-05 | 富士通株式会社 | 判定方法及びプリコーダ装置 |
US6151296A (en) * | 1997-06-19 | 2000-11-21 | Qualcomm Incorporated | Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals |
DE69720712T2 (de) * | 1997-08-05 | 2004-02-26 | Sony International (Europe) Gmbh | Schaltung zur Rückbildung von QAM-Symbolen |
US6295461B1 (en) * | 1997-11-03 | 2001-09-25 | Intermec Ip Corp. | Multi-mode radio frequency network system |
US6141387A (en) * | 1998-03-19 | 2000-10-31 | Motorola, Inc. | Digital QAM modulator using post filtering carrier recombination |
FI104774B (fi) * | 1998-03-23 | 2000-03-31 | Nokia Networks Oy | Menetelmä ja laitteisto modulaation ilmaisemiseksi |
KR100556448B1 (ko) * | 1998-05-09 | 2006-05-25 | 엘지전자 주식회사 | 디매핑방법및장치 |
US6498305B1 (en) | 1999-05-25 | 2002-12-24 | Intel Corporation | Interconnect mechanics for electromagnetic coupler |
US6449308B1 (en) * | 1999-05-25 | 2002-09-10 | Intel Corporation | High-speed digital distribution system |
US6576847B2 (en) | 1999-05-25 | 2003-06-10 | Intel Corporation | Clamp to secure carrier to device for electromagnetic coupler |
GB9915593D0 (en) * | 1999-07-02 | 1999-09-01 | Nokia Telecommunications Oy | Data acknowledgement |
US20020085117A1 (en) * | 2001-01-04 | 2002-07-04 | Harris Frederic Joel | System and method for nondisruptively embedding a QAM modulated data signal into in a composite video signal |
US7088198B2 (en) * | 2002-06-05 | 2006-08-08 | Intel Corporation | Controlling coupling strength in electromagnetic bus coupling |
US6887095B2 (en) * | 2002-12-30 | 2005-05-03 | Intel Corporation | Electromagnetic coupler registration and mating |
KR100413744B1 (en) * | 2003-06-23 | 2004-01-03 | Tae Hoon Kim | Method and apparatus for hard decision demodulation of qam |
US8194750B2 (en) * | 2006-10-16 | 2012-06-05 | Samsung Electronics Co., Ltd. | System and method for digital communication having a circulant bit interleaver for equal error protection (EEP) and unequal error protection (UEP) |
CN101188463B (zh) * | 2007-12-20 | 2011-11-09 | 北京北方烽火科技有限公司 | 一种cdma接收机功率校准与实时校正实现方法 |
US8014436B2 (en) * | 2008-07-02 | 2011-09-06 | Telefonaktiebolaget L M Ericsson (Publ) | Multi-dimensional signal of reduced peak-to-RMS ratio |
DE102009032300B4 (de) * | 2009-07-09 | 2012-02-23 | Hochschule RheinMain University of Applied Sciences Wiesbaden Rüsselsheim Geisenheim | Serielles Multi-Clock Interface System |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4084137A (en) * | 1976-08-24 | 1978-04-11 | Communications Satellite Corporation | Multidimensional code communication systems |
US4562426A (en) * | 1982-11-08 | 1985-12-31 | Codex Corporation | Symbol coding apparatus |
US4597090A (en) * | 1983-04-14 | 1986-06-24 | Codex Corporation | Block coded modulation system |
US4630287A (en) * | 1983-12-28 | 1986-12-16 | Paradyne Corporation | Secondary channel signalling in a QAM data point constellation |
US5124656A (en) * | 1990-09-28 | 1992-06-23 | General Electric Company | Adaptive estimation of phase or delay for both leading and lagging phase shifts |
US5115453A (en) * | 1990-10-01 | 1992-05-19 | At&T Bell Laboratories | Technique for designing a multidimensional signaling scheme |
US5287180A (en) * | 1991-02-04 | 1994-02-15 | General Electric Company | Modulator/demodulater for compatible high definition television system |
-
1992
- 1992-05-29 US US07/889,805 patent/US5315617A/en not_active Expired - Lifetime
- 1992-11-17 TW TW081109174A patent/TW221086B/zh not_active IP Right Cessation
-
1993
- 1993-04-23 MY MYPI93000741A patent/MY108853A/en unknown
- 1993-05-11 AU AU42340/93A patent/AU4234093A/en not_active Abandoned
- 1993-05-11 PL PL93306410A patent/PL171462B1/pl not_active IP Right Cessation
- 1993-05-11 EP EP93911071A patent/EP0643894B1/fr not_active Expired - Lifetime
- 1993-05-11 KR KR1019940704326A patent/KR100282688B1/ko not_active IP Right Cessation
- 1993-05-11 JP JP50055194A patent/JP3609085B2/ja not_active Expired - Fee Related
- 1993-05-11 SG SG9602644A patent/SG86970A1/en unknown
- 1993-05-11 DE DE69320191T patent/DE69320191T2/de not_active Expired - Lifetime
- 1993-05-11 CA CA002136615A patent/CA2136615C/fr not_active Expired - Lifetime
- 1993-05-11 PL PL93316088A patent/PL171911B1/pl not_active IP Right Cessation
- 1993-05-11 WO PCT/US1993/004238 patent/WO1993025034A1/fr active IP Right Grant
- 1993-05-11 ES ES93911071T patent/ES2122009T3/es not_active Expired - Lifetime
- 1993-05-28 CN CN93106565A patent/CN1051428C/zh not_active Expired - Fee Related
-
1994
- 1994-11-28 FI FI945590A patent/FI945590A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
CN1080104A (zh) | 1993-12-29 |
MY108853A (en) | 1996-11-30 |
JPH07507430A (ja) | 1995-08-10 |
DE69320191T2 (de) | 1999-02-11 |
US5315617A (en) | 1994-05-24 |
EP0643894B1 (fr) | 1998-08-05 |
CA2136615A1 (fr) | 1993-12-09 |
PL171911B1 (pl) | 1997-06-30 |
FI945590A0 (fi) | 1994-11-28 |
TW221086B (fr) | 1994-02-11 |
JP3609085B2 (ja) | 2005-01-12 |
KR950702079A (ko) | 1995-05-17 |
SG86970A1 (en) | 2002-03-19 |
WO1993025034A1 (fr) | 1993-12-09 |
KR100282688B1 (ko) | 2001-02-15 |
CN1051428C (zh) | 2000-04-12 |
AU4234093A (en) | 1993-12-30 |
ES2122009T3 (es) | 1998-12-16 |
PL171462B1 (en) | 1997-04-30 |
EP0643894A1 (fr) | 1995-03-22 |
DE69320191D1 (de) | 1998-09-10 |
CA2136615C (fr) | 2003-07-22 |
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