Title:
MODULATION USING CHIRP SIGNALS, IN PARTICULAR FOR USE IN A MULTIPATH ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO2001047203
Kind Code:
A3
Abstract:
The invention relates to a method and transmitting devices for transmitting and/or receiving information using waves. According to said method, an information signal is impressed onto a carrier wave, whose frequency is continuously modified in a progressive manner in order to produce at least one carrier sweep at predetermined intervals. Once the information signal has been received in the frequency range, it is filtered to separate multipath components, cleaned to remove noise content and subsequently evaluated with regard to the information-bearing signal parameters.
Inventors:
BANNASCH RUDOLF (DE)
KEBKAL KONSTANTIN (DE)
KEBKAL KONSTANTIN (DE)
Application Number:
PCT/EP2000/013033
Publication Date:
July 18, 2002
Filing Date:
December 20, 2000
Export Citation:
Assignee:
BANNASCH RUDOLF (DE)
KEBKAL KONSTANTIN (DE)
KEBKAL KONSTANTIN (DE)
International Classes:
H04B1/10; H04B1/69; H04B14/02; H04L1/04; H04L5/02; H04L25/49; H04L27/10; H04L27/32; H04B1/26; (IPC1-7): H04L27/10; H04L27/32; H04L25/49; H04L5/02; H04B1/69; H04B7/12; H04L1/04; H04B14/02
Domestic Patent References:
| WO1999063501A1 | 1999-12-09 |
Foreign References:
| EP0942538A2 | 1999-09-15 | |||
| US3493865A | 1970-02-03 | |||
| US5070500A | 1991-12-03 | |||
| US5278862A | 1994-01-11 | |||
| US6047023A | 2000-04-04 |
Other References:
HILL W ET AL: "DEEP-OCEAN TESTS OF AN ACOUSTIC MODEM INSENSITIVE TO MULTIPATH DISTORTION", PROCEEDINGS OF THE OCEANS CONFERENCE,US,NEW YORK, IEEE, vol. CONF. 13, 31 October 1988 (1988-10-31), pages 275 - 282, XP000042345
KIM J ET AL: "Coded multiple chirp spread spectrum system and overlay service", PROCEEDINGS OF THE TWENTIETH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY (CAT. NO.88CH2553-6), CHARLOTTE, NC, USA, 20-22 MARCH 1988, 1988, Washington, DC, USA, IEEE Comput. Soc. Press, USA, pages 336 - 341, XP002170525, ISBN: 0-8186-0847-1
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10 31 August 1998 (1998-08-31)
KEBKAL K G ET AL: "Implementation of a sweep-spread function for communication over underwater acoustic channels", OCEANS 2000 MTS/IEEE CONFERENCE PROCEEDINGS, PROVIDENCE, RI, USA, 11-14 SEPT. 2000, vol. 3, 2000, Piscataway, NJ, USA, IEEE, USA, pages 1829 - 1838, XP002170526, ISBN: 0-7803-6551-8
KIM J ET AL: "Coded multiple chirp spread spectrum system and overlay service", PROCEEDINGS OF THE TWENTIETH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY (CAT. NO.88CH2553-6), CHARLOTTE, NC, USA, 20-22 MARCH 1988, 1988, Washington, DC, USA, IEEE Comput. Soc. Press, USA, pages 336 - 341, XP002170525, ISBN: 0-8186-0847-1
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10 31 August 1998 (1998-08-31)
KEBKAL K G ET AL: "Implementation of a sweep-spread function for communication over underwater acoustic channels", OCEANS 2000 MTS/IEEE CONFERENCE PROCEEDINGS, PROVIDENCE, RI, USA, 11-14 SEPT. 2000, vol. 3, 2000, Piscataway, NJ, USA, IEEE, USA, pages 1829 - 1838, XP002170526, ISBN: 0-7803-6551-8
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