TW200511788A - Method of modulating and method of encrypting a digital data stream, method of decoding, appliance for implementing a method of this kind, multi-carrier transmission system - Google Patents

Method of modulating and method of encrypting a digital data stream, method of decoding, appliance for implementing a method of this kind, multi-carrier transmission system

Info

Publication number
TW200511788A
TW200511788A TW093123942A TW93123942A TW200511788A TW 200511788 A TW200511788 A TW 200511788A TW 093123942 A TW093123942 A TW 093123942A TW 93123942 A TW93123942 A TW 93123942A TW 200511788 A TW200511788 A TW 200511788A
Authority
TW
Taiwan
Prior art keywords
mapping
modulating
data stream
digital data
encryption
Prior art date
Application number
TW093123942A
Other languages
Chinese (zh)
Inventor
Francesc Dalmases
Joachim Kahlert
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of TW200511788A publication Critical patent/TW200511788A/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 (X0, X1…XN-1) 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).
TW093123942A 2003-08-13 2004-08-10 Method of modulating and method of encrypting a digital data stream, method of decoding, appliance for implementing a method of this kind, multi-carrier transmission system TW200511788A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
TW200511788A true TW200511788A (en) 2005-03-16

Family

ID=34178564

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093123942A TW200511788A (en) 2003-08-13 2004-08-10 Method of modulating and method of encrypting a digital data stream, method of decoding, appliance for implementing a method of this kind, 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
CA2396462A1 (en) * 1999-12-22 2001-06-28 Deutsche Telekom Ag 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
WO2005018184A8 (en) 2005-08-11
WO2005018184A1 (en) 2005-02-24

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