Global Patent Index - EP 1320969 A1

EP 1320969 A1 2003-06-25 - MODULATION METHOD FOR A MULTI-CARRIER PROCESS WITH PRE-EMPHASIS

Title (en)

MODULATION METHOD FOR A MULTI-CARRIER PROCESS WITH PRE-EMPHASIS

Title (de)

MODULATIONSVERFAHREN FÜR EIN MULTITRÄGERVERFAHREN MIT VORVERZERRUNG

Title (fr)

PROCEDE DE MODULATION POUR UN PROCESSUS A ONDES PORTEUSES MULTIPLES AVEC PREACCENTUATION

Publication

EP 1320969 A1 (DE)

Application

EP 00981140 A

Priority

DE 0003437 W

Abstract (en)

[origin: WO0228045A1] The invention relates to a modulation method for a multi-carrier process for the transmission of transmitted signals (1) over a transmission band with several sub-carriers (6). According to the invention, a pre-emphasis (4) of the transmitted signal (1) occurs on the transmitter side, depending upon the current transmission band. The resultant transmitted signal is modulated (8) onto the transmission band. On the receiver side the pre-emphasised transmitted signal (11) is equalised using an adaptive equaliser (16) which is used individually for each sub-carrier (6).

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

H04L 27/26; H04L 25/03

IPC 8 full level (invention and additional information)

H04L 25/03 (2006.01); H04L 27/26 (2006.01)

CPC (invention and additional information)

H04L 27/2653 (2013.01); H04L 25/03343 (2013.01); H04L 27/2637 (2013.01)

Citation (search report)

See references of WO 0228045A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 0228045 A1 20020404; EP 1320969 A1 20030625

INPADOC legal status


2009-11-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090401

2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB

2003-06-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030311

2003-06-25 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE