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WO2001006663A3 - System and method for optical wireless communication - Google Patents

System and method for optical wireless communication Download PDF

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Publication number
WO2001006663A3
WO2001006663A3 PCT/US2000/018200 US0018200W WO0106663A3 WO 2001006663 A3 WO2001006663 A3 WO 2001006663A3 US 0018200 W US0018200 W US 0018200W WO 0106663 A3 WO0106663 A3 WO 0106663A3
Authority
WO
WIPO (PCT)
Prior art keywords
light signals
diverse
different
combined
signal
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.)
Ceased
Application number
PCT/US2000/018200
Other languages
French (fr)
Other versions
WO2001006663A2 (en
Inventor
Christopher C Davis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/018,957 priority Critical patent/US7106971B1/en
Priority to AU15683/01A priority patent/AU1568301A/en
Publication of WO2001006663A2 publication Critical patent/WO2001006663A2/en
Publication of WO2001006663A3 publication Critical patent/WO2001006663A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Radio Transmission System (AREA)

Abstract

A system and method for optical wireless communication with fading resistance. A delayed diversity approach reduces fading significantly. Data is sent in a set of light signals (also called diverse light signals) which each have a different polarization and/or a different wavelength. The diverse light signals are also temporally different in that they are transmitted in a delayed fashion with respect to one another (Figure 3A). In this way, each light signal is carried over a different, uncorrelated 'channel' through the atmosphere. At a receiver, original data in each received light signals is temporally adjusted and combined into a single output data signal (Figure 4B). The accuracy of each bit in the output data signal is then due to the reception of the combined diverse light signals. In this way, even if fading occurs in one channel (effecting one diverse light signal), a combined output data signal can still be generated at relatively high accuracy from the original data carried in one or more of the other diverse light signals.
PCT/US2000/018200 1999-06-30 2000-06-30 System and method for optical wireless communication Ceased WO2001006663A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/018,957 US7106971B1 (en) 1999-06-30 2000-06-30 System and method for optical wireless communication
AU15683/01A AU1568301A (en) 1999-06-30 2000-06-30 System and method for optical wireless communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14158799P 1999-06-30 1999-06-30
US60/141,587 1999-06-30

Publications (2)

Publication Number Publication Date
WO2001006663A2 WO2001006663A2 (en) 2001-01-25
WO2001006663A3 true WO2001006663A3 (en) 2001-08-09

Family

ID=22496332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/018200 Ceased WO2001006663A2 (en) 1999-06-30 2000-06-30 System and method for optical wireless communication

Country Status (2)

Country Link
AU (1) AU1568301A (en)
WO (1) WO2001006663A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10104912A1 (en) * 2001-02-03 2002-08-08 Alcatel Sa Method of transmitting an optical signal through free space
FI20020702A7 (en) 2002-02-22 2003-08-23 Mikko Kalervo Vaeaenaenen Wireless broadband communication method and device
DE10247882B4 (en) * 2002-10-14 2005-03-10 Deutsch Zentr Luft & Raumfahrt A method for reducing fading occurring in free space optical communication
DE10320814A1 (en) * 2003-05-08 2004-12-09 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process for the optical transmission of digital signals
US7277644B2 (en) 2003-06-13 2007-10-02 The Regents Of The University Of California Fade-resistant forward error correction method for free-space optical communications systems
US7574137B1 (en) * 2006-05-05 2009-08-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Multi-wavelength time-coincident optical communications system and methods thereof
DE102008005791B3 (en) * 2008-01-23 2009-11-19 Deutsches Zentrum für Luft- und Raumfahrt e.V. A method for atmospheric free space optical transmission of digital signals and receivers for the method
CN114465665B (en) * 2022-01-24 2024-04-02 桂林电子科技大学 Beam forming method based on maximum ratio combination under strong turbulence channel
US20250202586A1 (en) * 2023-12-15 2025-06-19 Ciena Corporation Wavelength diversity turbulence mitigation method and apparatus for free-space optical communications

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809257A (en) * 1985-04-02 1989-02-28 International Business Machines Corporation Hierarchical distributed infrared communication system
US5515438A (en) * 1993-11-24 1996-05-07 International Business Machines Corporation Quantum key distribution using non-orthogonal macroscopic signals
US5557443A (en) * 1993-12-09 1996-09-17 Matsushita Electric Industrial Co., Ltd. Optical communication method and optical remote controller
US5675648A (en) * 1992-12-24 1997-10-07 British Telecommunications Public Limited Company System and method for key distribution using quantum cryptography
US5737366A (en) * 1995-12-29 1998-04-07 Lucent Technologies Inc. Method and apparatus for receiving line encoded bursts of information
US5757912A (en) * 1993-09-09 1998-05-26 British Telecommunications Public Limited Company System and method for quantum cryptography
US5793509A (en) * 1994-07-07 1998-08-11 Gpt Limited Telecommunications network

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809257A (en) * 1985-04-02 1989-02-28 International Business Machines Corporation Hierarchical distributed infrared communication system
US5675648A (en) * 1992-12-24 1997-10-07 British Telecommunications Public Limited Company System and method for key distribution using quantum cryptography
US5757912A (en) * 1993-09-09 1998-05-26 British Telecommunications Public Limited Company System and method for quantum cryptography
US5515438A (en) * 1993-11-24 1996-05-07 International Business Machines Corporation Quantum key distribution using non-orthogonal macroscopic signals
US5557443A (en) * 1993-12-09 1996-09-17 Matsushita Electric Industrial Co., Ltd. Optical communication method and optical remote controller
US5793509A (en) * 1994-07-07 1998-08-11 Gpt Limited Telecommunications network
US5737366A (en) * 1995-12-29 1998-04-07 Lucent Technologies Inc. Method and apparatus for receiving line encoded bursts of information

Also Published As

Publication number Publication date
AU1568301A (en) 2001-02-05
WO2001006663A2 (en) 2001-01-25

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