(19)
(11) EP 1 378 072 A2

(12)

(88) Date of publication A3:
03.04.2003

(43) Date of publication:
07.01.2004 Bulletin 2004/02

(21) Application number: 02720111.0

(22) Date of filing: 03.04.2002
(51) International Patent Classification (IPC)7H04B 7/00
(86) International application number:
PCT/GB2002/001336
(87) International publication number:
WO 2002/082683 (17.10.2002 Gazette 2002/42)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 03.04.2001 US 825058
29.03.2002 US 109915

(71) Applicant: Nortel Networks Limited
St. Laurent,Quebec H4S 2A9 (CA)

(72) Inventor:
  • HUDSON, John, E.
    Stansted, Essex CM24 8LR (GB)

(74) Representative: Free, Rachel, Dr. 
Nortel Networks Limited,IP Law Group,London Road
Harlow,Essex CM17 9NA
Harlow,Essex CM17 9NA (GB)

   


(54) COMMUNICATION SYSTEM AND METHODS OF ESTIMATING CHANNEL IMPULSE RESPONSES THEREIN