EP 2119073 A1 20091118 - METHOD FOR GENERATING MUTUALLY ORTHOGONAL SIGNALS HAVING A CONTROLLED SPECTRUM
Title (en)
METHOD FOR GENERATING MUTUALLY ORTHOGONAL SIGNALS HAVING A CONTROLLED SPECTRUM
Title (de)
VERFAHREN ZUR ERZEUGUNG VON ZUEINANDER ORTHOGONALEN SIGNALEN MIT GESTEUERTER BANDBREITE
Title (fr)
PROCEDE DE GENERATION DE SIGNAUX MUTUELLEMENT ORTHOGONAUX DONT LE SPECTRE EST CONTROLE
Publication
Application
Priority
- FR 2008050391 W 20080307
- FR 0753737 A 20070309
Abstract (en)
[origin: WO2008122744A1] The invention relates to a method for generating mutually orthogonal signals having a controlled spectrum, comprising the generation of a plurality of mututally orthogonal, controlled-power discrete spectra s(i) having dimension Q, i designating spectrum number. The aforementioned spectra represent time signals in the spectral range and have a modulus µ that is constant in a spectral line designation set G and zero everywhere else. The inventive method comprises the following steps: determining (20) at least part of a complex Hadamard matrix H of order dR = w in the case of spectra of real signals and d<SUB>R</SUB> = 2.w in the case of spectra of complex signals; determining (22) the extension P of matrix H from G and dimension Q; and obtaining (22) controlled-power spectra s(i) = µ.P(H[.][i]), wherein H[.][i] designates the i-th column of matrix H. In addition, a plurality of mutually orthogonal time signals s(i) is also generated from said discrete complex signals.
IPC 8 full level
H04J 11/00 (2006.01); H04J 13/00 (2011.01); H04J 13/12 (2011.01)
CPC (source: EP US)
H04J 13/004 (2013.01 - EP US); H04J 13/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2008122744A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2913548 A1 20080912; EP 2119073 A1 20091118; US 2010103811 A1 20100429; US 8154984 B2 20120410; WO 2008122744 A1 20081016
DOCDB simple family (application)
FR 0753737 A 20070309; EP 08775694 A 20080307; FR 2008050391 W 20080307; US 53054008 A 20080307