WO2005018184A8 - Modulation and encryption of a digital date stream, method of decoding, multi-carrier transmission system - Google Patents

Modulation and encryption of a digital date stream, method of decoding, multi-carrier transmission system

Info

Publication number
WO2005018184A8
WO2005018184A8 PCT/IB2004/051364 IB2004051364W WO2005018184A8 WO 2005018184 A8 WO2005018184 A8 WO 2005018184A8 IB 2004051364 W IB2004051364 W IB 2004051364W WO 2005018184 A8 WO2005018184 A8 WO 2005018184A8
Authority
WO
WIPO (PCT)
Prior art keywords
encryption
mapping
modulation
decoding
transmission system
Prior art date
Application number
PCT/IB2004/051364
Other languages
French (fr)
Other versions
WO2005018184A1 (en
Inventor
Francesc Dalmases
Joachim Kahlert
Original Assignee
Philips Intellectual Property
Koninkl Philips Electronics Nv
Francesc Dalmases
Joachim Kahlert
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 Philips Intellectual Property, Koninkl Philips Electronics Nv, Francesc Dalmases, Joachim Kahlert filed Critical Philips Intellectual Property
Publication of WO2005018184A1 publication Critical patent/WO2005018184A1/en
Publication of WO2005018184A8 publication Critical patent/WO2005018184A8/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Abstract

Method of modulating a digital data stream in MC technology, in which the constellation points (Xo, X1 ... XN-I) change their sequence in accordance with a mapping pattern (Ψi) during modulation. This dynamic mapping represents an encryption, since it is not readily possible for an unauthorized subscriber to restore the original sequence. The encryption level is further increased by the use of a set of multiple mapping patterns (Ψi), which is implemented during transmission in the form of a loop. The encryption level is further increased by defining a hop interval (Ihop), indicating the validity of an individual mapping pattern, after the handshake. The encryption key defines a set of mapping patterns (Ψi), a permutation function (Si), which indicates the order of use of the individual elements of the set of mapping patterns, and a hop interval (Ihop).
PCT/IB2004/051364 2003-08-13 2004-08-03 Modulation and encryption of a digital date stream, method of decoding, multi-carrier transmission system WO2005018184A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03102525.7 2003-08-13
EP03102525 2003-08-13

Publications (2)

Publication Number Publication Date
WO2005018184A1 WO2005018184A1 (en) 2005-02-24
WO2005018184A8 true WO2005018184A8 (en) 2005-08-11

Family

ID=34178564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/051364 WO2005018184A1 (en) 2003-08-13 2004-08-03 Modulation and encryption of a digital date stream, method of decoding, multi-carrier transmission system

Country Status (2)

Country Link
TW (1) TW200511788A (en)
WO (1) WO2005018184A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501841B1 (en) * 1998-12-17 2002-12-31 Intel Corporation Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels
US20040190439A1 (en) * 1999-12-22 2004-09-30 Guenther Komp Method and circuit arrangement for the secure transmission in digital transmission systems
US7020095B2 (en) * 2001-06-16 2006-03-28 Maxim Integrated Products, Inc. System and method for modulation of non-data bearing carriers in a multi-carrier modulation system

Also Published As

Publication number Publication date
TW200511788A (en) 2005-03-16
WO2005018184A1 (en) 2005-02-24

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