WO2002030012A3 - Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator - Google Patents

Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator Download PDF

Info

Publication number
WO2002030012A3
WO2002030012A3 PCT/US2001/031078 US0131078W WO0230012A3 WO 2002030012 A3 WO2002030012 A3 WO 2002030012A3 US 0131078 W US0131078 W US 0131078W WO 0230012 A3 WO0230012 A3 WO 0230012A3
Authority
WO
WIPO (PCT)
Prior art keywords
analog
noise
sequence generator
binary sequence
random binary
Prior art date
Application number
PCT/US2001/031078
Other languages
French (fr)
Other versions
WO2002030012A2 (en
Inventor
Leo Montreuil
Lamar West
Joseph Graham Mobley
Original Assignee
Scientific Atlanta
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scientific Atlanta filed Critical Scientific Atlanta
Publication of WO2002030012A2 publication Critical patent/WO2002030012A2/en
Publication of WO2002030012A3 publication Critical patent/WO2002030012A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

This invention relates to a noise mitigator (400) for use with an analog-to-digital converter (435) for reducing the spurious noise that is generated as a byproduct of the conversion process. The noise mitigator (400) includes a pseudo random binary sequence generator (410) that provides noise signals at a frequency outside of the frequency range that is providing information. The noise signals are combined with the analog signals before the input to the A/D converter (435), where the combintation of the signals reduces the spurious noise signals.
PCT/US2001/031078 2000-10-06 2001-10-04 Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator WO2002030012A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68411900A 2000-10-06 2000-10-06
US09/684,119 2000-10-06

Publications (2)

Publication Number Publication Date
WO2002030012A2 WO2002030012A2 (en) 2002-04-11
WO2002030012A3 true WO2002030012A3 (en) 2003-01-23

Family

ID=24746753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/031078 WO2002030012A2 (en) 2000-10-06 2001-10-04 Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator

Country Status (1)

Country Link
WO (1) WO2002030012A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100827278B1 (en) 2005-05-17 2008-05-07 가부시끼가이샤 도시바 Optical signal transmitting apparatus and signal processing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751496A (en) * 1985-07-11 1988-06-14 Teac Corporation Wide dynamic range analog to digital conversion method and system
EP0858170A2 (en) * 1997-02-05 1998-08-12 Hewlett-Packard Company System for preventing distortion in an analog-to-digital converter
US6064328A (en) * 1997-05-16 2000-05-16 Rohde & Schwarz Gmbh & Co. Kg Analog/digital converter with small crest factor dither signal superposed at an input side

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751496A (en) * 1985-07-11 1988-06-14 Teac Corporation Wide dynamic range analog to digital conversion method and system
EP0858170A2 (en) * 1997-02-05 1998-08-12 Hewlett-Packard Company System for preventing distortion in an analog-to-digital converter
US6064328A (en) * 1997-05-16 2000-05-16 Rohde & Schwarz Gmbh & Co. Kg Analog/digital converter with small crest factor dither signal superposed at an input side

Also Published As

Publication number Publication date
WO2002030012A2 (en) 2002-04-11

Similar Documents

Publication Publication Date Title
EP0308982A3 (en) Analog-to-digital converter having an excellent signal-to-noise ratio for small signals
SE9902416D0 (en) A parallel analog-to-digital converter
AU2001281944A1 (en) Electric toothbrush
WO2006084307A8 (en) Radar system
WO1999008389A3 (en) A digital communication device and a mixer
RU94006025A (en) MODULATED FOOTABLE PUSH-MUSIC SIGNAL
WO2002023727A3 (en) Method and apparatus for mismatch shaping of an oversampled converter
CA2337714A1 (en) Receiver system using analog to digital conversion at radio frequency and method
JP2002508605A (en) Dither noise source with notched frequency spectrum
TW200642294A (en) Double-sampled, time-interleaved analog to digital converter
WO2003061135A3 (en) Piecewise-linear, non-uniform adc
EP1835632A4 (en) Spectrum spread receiving apparatus
EP0858170A3 (en) System for preventing distortion in an analog-to-digital converter
GB8803627D0 (en) Digital to analogue converter
WO2001063777A3 (en) Interference canceller
EP0823700A3 (en) Digital syntesizer
WO2003044959A3 (en) Low spurious direct digital synthesizer
EP1107462A3 (en) Digital-to-analog converter with sigma delta conversion and storage
WO1999056427A3 (en) Sample rate converter using polynomial interpolation
WO2002037685A3 (en) High resolution adc based on an oversampled subranging adc
GB0215967D0 (en) Improvements in or relating to range resolution
SE0003043L (en) Background calibration of A / D converters
SE9901233D0 (en) Offset compensation in analog-to-digital converter
WO2002030012A3 (en) Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator
AU2003210089A1 (en) Method and apparatus for analog-to-digital conversion

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): BR CA JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP