EP 1190517 A4 20061004 - COMMUNICATION SYSTEMS AND APPARATUS WITH SYNCHRONOUS ORTHOGONAL CODING
Title (en)
COMMUNICATION SYSTEMS AND APPARATUS WITH SYNCHRONOUS ORTHOGONAL CODING
Title (de)
NACHRICHTENÜBERTRAGUNGSSYSTEME UND VORRICHTUNGEN MIT SYNCHRONER ORTHOGONALER KODIERUNG
Title (fr)
SYSTEME ET APPAREIL DE COMMUNICATION AVEC CODE ORTHOGONAL SYNCHRONE
Publication
Application
Priority
- US 0015988 W 20000609
- US 13859699 P 19990611
Abstract (en)
[origin: WO0077962A1] Code-multiplexed communications systems (100), apparatus, and methods include coders that encode and decode data streams with synchronous, substantially orthogonal codes. Code-multiplexed communications systems (100) encode data signals with such codes to control levels of decoding artifacts such as cross-talk at times or time intervals in which data is recovered. Some systems are based on synchronous, orthogonal codes that are obtained from complex orthogonal vectors. In an example, a three-level temporal-phase code that includes nine code chips and encodes and decodes data signals is a seven-channel communication system.
[origin: WO0077962A1] Code-multiplexed communication systems (100), apparatus, and methods include coders (Fig.1) that encode and decode data streams with synchronous, substantially orthogonal codes. Code-multiplexed communications systems (100) encode data signals with such codes to control levels of decoding artifacts such as cross-talk at times or time intervals in which data is recovered. Some systems are based on synchronous, orthogonal codes that are obtained from complex orthogonal vectors. In an example, a three-level temporal-phase code that includes nine code chips is used to encodes and decodes data signals is a seven-channel communication system.
IPC 1-7
H04J 11/00; H04J 13/00; H04J 14/02; H04B 7/216; H04B 10/04; H04B 10/12
IPC 8 full level
H04J 14/00 (2006.01); H04J 13/00 (2011.01); H04J 14/02 (2006.01)
CPC (source: EP)
H04J 14/005 (2013.01); H04J 14/02 (2013.01); H04J 13/004 (2013.01); H04J 13/0077 (2013.01)
Citation (search report)
- [X] US 5832022 A 19981103 - SCOTT LOGAN [US]
- [X] SALEHI J A ET AL: "COHERENT ULTRASHORT LIGHT PULSE CODE-DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEMS", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 8, no. 3, 1 March 1990 (1990-03-01), pages 478 - 491, XP000136408, ISSN: 0733-8724
- [X] HUANG W ET AL: "Optimal performance of coherent optical pulse CDMA systems based on code and phase synchronisation and interference cancellation", IEE PROCEEDINGS: OPTOELECTRONICS, INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB, vol. 145, no. 6, 15 December 1998 (1998-12-15), pages 353 - 359, XP006011395, ISSN: 1350-2433
- [A] FATHALLAH H ET AL: "PASSIVE OPTICAL FAST FREQUENCY-HOP CDMA COMMUNICATIONS SYSTEM", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 17, no. 3, March 1999 (1999-03-01), pages 397 - 405, XP000801716, ISSN: 0733-8724
- See also references of WO 0077962A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0077962 A1 20001221; WO 0077962 A8 20010621; CA 2376858 A1 20001221; CA 2376858 C 20060214; EP 1190517 A1 20020327; EP 1190517 A4 20061004
DOCDB simple family (application)
US 0015988 W 20000609; CA 2376858 A 20000609; EP 00941325 A 20000609