Global Patent Index - EP 1068706 A1

EP 1068706 A1 2001-01-17 - SYSTEM, DEVICE AND METHOD FOR IMPROVING A DEFINED PROPERTY OF TRANSFORM-DOMAIN SIGNALS

Title (en)

SYSTEM, DEVICE AND METHOD FOR IMPROVING A DEFINED PROPERTY OF TRANSFORM-DOMAIN SIGNALS

Title (de)

SYSTEM, EINRICHTUNG UND VERFAHREN ZUR VERBESSERUNG EINER BESTIMMTEN EIGENSCHAFT EINES SIGNALES IM TRANSFORMBEREICH

Title (fr)

SYSTEME, DISPOSITIF ET PROCEDE VISANT A AMELIORER UNE PROPRIETE DEFINIE DE SIGNAUX DU DOMAINE DES TRANSFORMEES

Publication

EP 1068706 A1 (EN)

Application

EP 99916577 A

Priority

  • US 9907840 W
  • US 5867198 A
  • US 8717798 A

Abstract (en)

[origin: WO9953662A1] In a transmitter (10) for transmitting data in blocks over a channel to a receiver (19), a device for improving a defined property of transform-domain symbols, the device, including: a signal mapper (12) which maps the input data into blocks of symbols in a first domain; wherein each of the symbols is chosen from a base constellation contained in an expanded constellation having expansion symbols, and wherein at least some of the symbols in the base constellation have one or more corresponding expansion symbols; and a perturbation transform device (14 and 16), responsive to the blocks of symbols, which produces for each block of symbols in the first domain a block of perturbed transform-domain symbols in order to improve a defined property of the transform-domain symbols.

IPC 1-7 (main, further and additional classification)

H04L 27/04

IPC 8 full level (invention and additional information)

H04L 27/36 (2006.01); H04L 27/26 (2006.01); H04L 27/34 (2006.01)

CPC (invention and additional information)

H04L 27/2614 (2013.01); H04L 27/2602 (2013.01); H04L 27/3411 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 9953662 A1 19991021; AU 3487099 A 19991101; AU 740189 B2 20011101; BR 9909525 A 20001212; CA 2328145 A1 19991021; CN 1300493 A 20010620; EP 1068706 A1 20010117; EP 1068706 A4 20010912; JP 2002511707 A 20020416

INPADOC legal status


2004-05-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031101

2001-09-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010726

2001-09-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE ES FR GB IT SE

2001-09-12 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 04L 27/04 A, 7H 04L 27/26 B

2001-01-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001110

2001-01-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT SE