(19)
(11) EP 2 087 686 A1

(12)

(43) Date of publication:
12.08.2009 Bulletin 2009/33

(21) Application number: 07833781.3

(22) Date of filing: 31.10.2007
(51) International Patent Classification (IPC): 
H04L 27/36(2006.01)
(86) International application number:
PCT/KR2007/005473
(87) International publication number:
WO 2008/066258 (05.06.2008 Gazette 2008/23)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

(30) Priority: 01.12.2006 KR 20060120984

(71) Applicant: Electronics and Telecommunications Research Institute
Yusong-gu, Daejeon-city 305-350 (KR)

(72) Inventors:
  • LIM, Hyoungsoo
    Daejeon-city 305-761 (KR)
  • PARK, So-Ra
    Daejeon-city 305-755 (KR)
  • KIM, Sung-Hoon
    Daejeon-city 302-726 (KR)
  • BAE, Jae-Hwui
    Daejeon-city 305-720 (KR)
  • LIM, Jong-Soo
    Daejeon-city 301-831 (KR)
  • LEE, Soo-In
    Daejeon-city 302-772 (KR)

(74) Representative: Boakes, Jason Carrington 
Harrison Goddard Foote 106 Micklegate
York YO1 6JX
York YO1 6JX (GB)

   


(54) HIERARCHICAL MODULATION APPARATUS AND METHOD USING PILOT SIGNAL, AND APPARATUS AND METHOD FOR RECEIVING HIERARCHICALLY MODULATED SIGNALS