CN1149805C - Qam接收机相位误差的检测方法 - Google Patents
Qam接收机相位误差的检测方法 Download PDFInfo
- Publication number
- CN1149805C CN1149805C CNB008117616A CN00811761A CN1149805C CN 1149805 C CN1149805 C CN 1149805C CN B008117616 A CNB008117616 A CN B008117616A CN 00811761 A CN00811761 A CN 00811761A CN 1149805 C CN1149805 C CN 1149805C
- Authority
- CN
- China
- Prior art keywords
- phase
- signal
- qam
- phase error
- error detector
- 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
- 238000012937 correction Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 238000000205 computational method Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000009466 transformation 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
- H04L27/32—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
-
- 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
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Details Of Television Scanning (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
标注I | 标注Q | 方法 |
3 | 0 | S5 |
0 | 3 | S5 |
3 | 1 | S3 |
1 | 3 | S2 |
4 | 0 | S4 |
0 | 4 | S4 |
4 | 1 | S4 |
1 | 4 | S4 |
所有其余的 | 所有其余的 | S1 |
标注I | 标注Q | 方法 |
3 | 0 | S5 |
0 | 3 | S5 |
4 | 0 | S3 |
0 | 4 | S2 |
4 | 2 | S3 |
2 | 4 | S2 |
5 | 1 | S3 |
1 | 5 | S2 |
5 | 2 | S4 |
2 | 5 | S4 |
所有其余的 | 所有其余的 | S1 |
标注I | 标注Q | 方法 |
3 | 0 | S5 |
0 | 3 | S5 |
4 | 0 | S3 |
0 | 4 | S2 |
4 | 2 | S3 |
2 | 4 | S2 |
5 | 1 | S3 |
1 | 5 | S2 |
5 | 2 | S4 |
2 | 5 | S4 |
7 | 3 | S3 |
3 | 7 | S2 |
8 | 2、3、4、5 | S4 |
2、3、4、5 | 8 | S4 |
9 | 0、1、2、3、4 | S4 |
0、1、2、3、4 | 9 | S4 |
所有其余的 | 所有其余的 | S1 |
标注I | 标注Q | 方法 |
3 | 0 | S5 |
0 | 3 | S5 |
4 | 0 | S3 |
0 | 4 | S2 |
4 | 2 | S3 |
2 | 4 | S2 |
5 | 1 | S3 |
1 | 5 | S2 |
5 | 2 | S4 |
2 | 5 | S4 |
7 | 3 | S3 |
3 | 7 | S2 |
8 | 5 | S5 |
5 | 8 | S5 |
9 | 3 | S3 |
3 | 9 | S2 |
9 | 7 | S5 |
7 | 9 | S5 |
9 | 8 | S5 |
8 | 9 | S5 |
10 | 2 | S5 |
2 | 10 | S5 |
10 | 7 | S5 |
7 | 10 | S5 |
10 | 8 | S5 |
8 | 10 | S5 |
11 | 5 | S3 |
5 | 11 | S2 |
11 | 6 | S4 |
6 | 11 | S4 |
12 | 3 | S4 |
3 | 12 | S4 |
12 | 4 | S4 |
4 | 12 | S4 |
所有其余的 | 所有其余的 | 1 |
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19928206A DE19928206A1 (de) | 1999-06-19 | 1999-06-19 | Phasenfehlerdetektor für einen QAM-Empfänger |
DE19928206.4 | 1999-06-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1370366A CN1370366A (zh) | 2002-09-18 |
CN1149805C true CN1149805C (zh) | 2004-05-12 |
Family
ID=7911905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB008117616A Expired - Fee Related CN1149805C (zh) | 1999-06-19 | 2000-06-08 | Qam接收机相位误差的检测方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7283599B1 (zh) |
EP (1) | EP1190544B1 (zh) |
CN (1) | CN1149805C (zh) |
AT (1) | ATE373371T1 (zh) |
AU (1) | AU4945800A (zh) |
DE (2) | DE19928206A1 (zh) |
NO (1) | NO20016204L (zh) |
WO (1) | WO2000079754A1 (zh) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000015130A2 (en) | 1998-09-10 | 2000-03-23 | Scimed Life Systems, Inc. | Systems for controlling an ablation process performed with a heart electrocatheter |
DE10249492A1 (de) * | 2002-10-24 | 2004-05-13 | Micronas Gmbh | Verfahren und Schaltung zur Erzeugung eines Hilfssymbols zum Einregeln eines QAM-Demodulators |
DE10347259B4 (de) * | 2003-10-08 | 2013-10-31 | Entropic Communications, Inc. | Verfahren zum Synchronisieren einer Schaltungsanordnung beim Empfang eines modulierten Signals |
US7894333B2 (en) * | 2004-03-22 | 2011-02-22 | Thomson Licensing | Method and apparatus for use in carrier recovery in a communications system |
DE102004023889A1 (de) | 2004-05-12 | 2005-12-08 | Micronas Gmbh | Verfahren und Schaltungsanordnung zum Bestimmen der Frequenz eines empfangenen Signals zum Demodulieren von empfangenen Symbolen |
US9571326B2 (en) | 2009-03-05 | 2017-02-14 | SeeScan, Inc. | Method and apparatus for high-speed data transfer employing self-synchronizing quadrature amplitude modulation |
US8259859B2 (en) * | 2009-09-21 | 2012-09-04 | Techwell Llc | Method and system for carrier recovery for QAM |
US20120163523A1 (en) * | 2010-12-22 | 2012-06-28 | Smith International, Inc. | Synchronization methods for downhole communication |
CN102185824B (zh) * | 2011-04-25 | 2014-04-16 | 武汉邮电科学研究院 | 一种适用于高阶qam的载波相位纠偏方法 |
US9634878B1 (en) | 2011-09-08 | 2017-04-25 | See Scan, Inc. | Systems and methods for data transfer using self-synchronizing quadrature amplitude modulation (QAM) |
US10447513B2 (en) * | 2017-01-06 | 2019-10-15 | National Instruments Corporation | Common phase error (CPE) compensation for frequency division multiplex (FDM) symbols in wireless communication systems |
CN110771078B (zh) | 2017-04-03 | 2022-04-15 | 美国国家仪器有限公司 | 测量基于ptrs端口选择的无线通信系统 |
US10841925B2 (en) | 2017-05-05 | 2020-11-17 | National Instruments Corporation | Wireless communication system that performs beam reporting based on a combination of reference signal receive power and channel state information metrics |
US10951300B2 (en) | 2017-08-11 | 2021-03-16 | National Instruments Corporation | Radio frequency beam management and recovery |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3619744A1 (de) * | 1986-06-12 | 1987-12-17 | Ant Nachrichtentech | Verfahren zum gewinnen eines phasendifferenzsignals |
FR2621188B1 (fr) * | 1987-09-25 | 1989-12-29 | Labo Electronique Physique | Circuit de recuperation de l'onde porteuse de systemes de transmissions numeriques |
US5042052A (en) * | 1990-02-16 | 1991-08-20 | Harris Corporation | Carrier acquisition scheme for QAM and QPSK data |
US5640417A (en) * | 1991-10-04 | 1997-06-17 | Harris Canada, Inc. | QAM detector which compensates for received symbol distortion induced by a cellular base station |
DE4216156C1 (zh) * | 1992-05-15 | 1993-08-19 | Ant Nachrichtentechnik Gmbh, 7150 Backnang, De | |
US5504453A (en) * | 1994-10-14 | 1996-04-02 | Hughes Aircraft Company | Method and device for estimating phase error |
JPH09214578A (ja) * | 1996-01-30 | 1997-08-15 | Fujitsu Ltd | 搬送波再生回路 |
-
1999
- 1999-06-19 DE DE19928206A patent/DE19928206A1/de not_active Withdrawn
-
2000
- 2000-06-08 AU AU49458/00A patent/AU4945800A/en not_active Abandoned
- 2000-06-08 WO PCT/IB2000/000809 patent/WO2000079754A1/de active IP Right Grant
- 2000-06-08 US US10/018,759 patent/US7283599B1/en not_active Expired - Lifetime
- 2000-06-08 EP EP00931510A patent/EP1190544B1/de not_active Expired - Lifetime
- 2000-06-08 AT AT00931510T patent/ATE373371T1/de not_active IP Right Cessation
- 2000-06-08 DE DE50014653T patent/DE50014653D1/de not_active Expired - Lifetime
- 2000-06-08 CN CNB008117616A patent/CN1149805C/zh not_active Expired - Fee Related
-
2001
- 2001-12-18 NO NO20016204A patent/NO20016204L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO20016204L (no) | 2002-02-19 |
DE19928206A1 (de) | 2000-12-21 |
ATE373371T1 (de) | 2007-09-15 |
US7283599B1 (en) | 2007-10-16 |
CN1370366A (zh) | 2002-09-18 |
EP1190544A1 (de) | 2002-03-27 |
EP1190544B1 (de) | 2007-09-12 |
DE50014653D1 (de) | 2007-10-25 |
AU4945800A (en) | 2001-01-09 |
NO20016204D0 (no) | 2001-12-18 |
WO2000079754A1 (de) | 2000-12-28 |
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C14 | Grant of patent or utility model | ||
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Owner name: L.M. ERICSSON CO., LTD. Free format text: FORMER OWNER: MARCONI COMMUNICATIONS GMBH Effective date: 20070420 |
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Effective date of registration: 20070420 Address after: Stockholm Patentee after: Erisson Address before: German buchnan Patentee before: Marconi Communications GmbH |
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Granted publication date: 20040512 Termination date: 20160608 |
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