BR9205567A - Aparelho e processo que corrigem desvio CD, de sinal desmodulado e modulado, e receptor que emprega o aparelho - Google Patents
Aparelho e processo que corrigem desvio CD, de sinal desmodulado e modulado, e receptor que emprega o aparelhoInfo
- Publication number
- BR9205567A BR9205567A BR9205567A BR9205567A BR9205567A BR 9205567 A BR9205567 A BR 9205567A BR 9205567 A BR9205567 A BR 9205567A BR 9205567 A BR9205567 A BR 9205567A BR 9205567 A BR9205567 A BR 9205567A
- Authority
- BR
- Brazil
- Prior art keywords
- demodulated
- employs
- deviation
- receiver
- correct
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/062—Setting decision thresholds using feedforward techniques only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/063—Setting decision thresholds using feedback techniques only
- H04L25/064—Subtraction of the threshold from the signal, which is then compared to a supplementary fixed threshold
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/066—Multilevel decisions, not including self-organising maps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Analogue/Digital Conversion (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/646,539 US5175749A (en) | 1991-01-25 | 1991-01-25 | Apparatus and method for dc offset correction in a receiver |
PCT/US1992/000573 WO1992013415A1 (en) | 1991-01-25 | 1992-01-23 | Apparatus and method for dc offset correction in a receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9205567A true BR9205567A (pt) | 1994-04-26 |
Family
ID=24593446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9205567A BR9205567A (pt) | 1991-01-25 | 1992-01-23 | Aparelho e processo que corrigem desvio CD, de sinal desmodulado e modulado, e receptor que emprega o aparelho |
Country Status (7)
Country | Link |
---|---|
US (1) | US5175749A (pt) |
EP (1) | EP0568646B1 (pt) |
JP (1) | JPH06505380A (pt) |
KR (1) | KR960014428B1 (pt) |
BR (1) | BR9205567A (pt) |
DE (1) | DE69225132T2 (pt) |
WO (1) | WO1992013415A1 (pt) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9211712D0 (en) * | 1992-06-03 | 1992-07-15 | Fujitsu Microelectronics Ltd | Gm digital receive processing |
US5546429A (en) * | 1992-11-09 | 1996-08-13 | Motorola, Inc. | Frequency hopping code division multiple access radio communication unit |
GB2274759B (en) * | 1993-02-02 | 1996-11-13 | Nokia Mobile Phones Ltd | Correction of D.C offset in received and demodulated radio signals |
US5608762A (en) * | 1993-06-30 | 1997-03-04 | Spectralink Corporation | Apparatus and method for automatic discriminator compensation in a FSK receiver |
US5857003A (en) * | 1993-07-30 | 1999-01-05 | Aria Wireless Systems, Inc. | Digital radio having improved modulation and detection processes |
CA2124480C (en) * | 1993-08-09 | 1998-09-15 | Bernard James Arntz | Dc coupled amplifier fed by an rf detector |
DE4341937A1 (de) * | 1993-12-09 | 1995-06-14 | Philips Patentverwaltung | Elektrisches Gerät mit einer Anordnung zur Kompensation eines Gleichspannungsanteils |
US5465272A (en) * | 1994-04-08 | 1995-11-07 | Synoptics Communications, Inc. | Data transmitter baseline wander correction circuit |
JP2661574B2 (ja) * | 1994-12-28 | 1997-10-08 | 日本電気株式会社 | Ln変調器直流バイアス回路 |
DE19637150A1 (de) * | 1996-09-12 | 1998-04-23 | Siemens Ag | Schaltung zur Ermittlung und Bewertung eines Datensignals |
JPH10163877A (ja) * | 1996-11-28 | 1998-06-19 | Sony Corp | 復調回路における多値コンパレータのしきい値制御回路 |
US6175728B1 (en) * | 1997-03-05 | 2001-01-16 | Nec Corporation | Direct conversion receiver capable of canceling DC offset voltages |
US6020839A (en) * | 1997-10-27 | 2000-02-01 | Int Labs, Inc. | Analog technique to detect asymmetric radio frequency pulses |
GB2335809B (en) * | 1998-03-24 | 2001-09-12 | Ericsson Telefon Ab L M | Demodulator circuits |
US6675024B1 (en) * | 1999-09-30 | 2004-01-06 | Skyworks Solutions, Inc. | System and method for receiving analog and digital signals |
US7068987B2 (en) | 2000-10-02 | 2006-06-27 | Conexant, Inc. | Packet acquisition and channel tracking for a wireless communication device configured in a zero intermediate frequency architecture |
US6748200B1 (en) | 2000-10-02 | 2004-06-08 | Mark A. Webster | Automatic gain control system and method for a ZIF architecture |
US8493036B2 (en) | 2006-10-21 | 2013-07-23 | Advanced Analogic Technologies, Inc. | Controllable charge paths, and related methods |
US8310218B2 (en) * | 2007-08-08 | 2012-11-13 | Advanced Analogic Technologies, Inc. | Time-multiplexed-capacitor DC/DC converter with multiple outputs |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509279A (en) * | 1967-05-22 | 1970-04-28 | Collins Radio Co | Am data detector with reference level responsive to input and detected data to produce comparison signal |
US4186384A (en) * | 1975-06-24 | 1980-01-29 | Honeywell Inc. | Signal bias remover apparatus |
US4263555A (en) * | 1979-06-15 | 1981-04-21 | Rca Corporation | Signal detection system |
JPS60167529A (ja) * | 1984-02-10 | 1985-08-30 | Hitachi Ltd | 時分割方向制御デイジタル伝送装置 |
US4873702A (en) * | 1988-10-20 | 1989-10-10 | Chiu Ran Fun | Method and apparatus for DC restoration in digital receivers |
-
1991
- 1991-01-25 US US07/646,539 patent/US5175749A/en not_active Expired - Lifetime
-
1992
- 1992-01-23 JP JP4506238A patent/JPH06505380A/ja active Pending
- 1992-01-23 BR BR9205567A patent/BR9205567A/pt not_active Application Discontinuation
- 1992-01-23 EP EP92906144A patent/EP0568646B1/en not_active Expired - Lifetime
- 1992-01-23 WO PCT/US1992/000573 patent/WO1992013415A1/en active IP Right Grant
- 1992-01-23 DE DE69225132T patent/DE69225132T2/de not_active Expired - Fee Related
-
1993
- 1993-07-19 KR KR93702151A patent/KR960014428B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR930703777A (ko) | 1993-11-30 |
EP0568646A1 (en) | 1993-11-10 |
US5175749A (en) | 1992-12-29 |
DE69225132D1 (de) | 1998-05-20 |
EP0568646A4 (en) | 1993-12-15 |
WO1992013415A1 (en) | 1992-08-06 |
KR960014428B1 (en) | 1996-10-15 |
JPH06505380A (ja) | 1994-06-16 |
DE69225132T2 (de) | 1998-10-08 |
EP0568646B1 (en) | 1998-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FA8 | Dismissal: dismissal - article 36, par. 1 of industrial property law | ||
B15K | Others concerning applications: alteration of classification |
Ipc: H04L 25/06 (2006.01) |