Global Patent Index - EP 1070411 A1

EP 1070411 A1 2001-01-24 - INITIALISATION OF COEFFICIENTS FOR DECISION FEEDBACK EQUALISERS

Title (en)

INITIALISATION OF COEFFICIENTS FOR DECISION FEEDBACK EQUALISERS

Title (de)

INITIALISIERUNG DER KOEFFIZIENTEN FÜR ENTSCHEIDUNGSRÜCKGEKOPPELTE ENTZERRER

Title (fr)

INITIALISATION DE COEFFICIENTS POUR EGALISEURS DECISIONNELS A RETROACTION

Publication

EP 1070411 A1 (EN)

Application

EP 99915888 A

Priority

  • GB 9901081 W
  • GB 9807600 A

Abstract (en)

[origin: GB2336277A] A decision feedback equaliser 50 is preloaded with filter coefficients for training purposes. A data signal is received which includes a training sequence. A sample value of the training sequence are correlated 34 with a stored equivalent training sequence and the peak correlation value is determined. A first set of correlation values is preloaded into a feedforward portion 42 of the DFE for use as initial feedforward filter coefficients before training and the outputs of a feedforward filter are used as initial feedback filter coefficients in a feedback portion 48 of the DFE.

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

H04L 25/03

IPC 8 full level (invention and additional information)

H04L 25/03 (2006.01)

CPC (invention and additional information)

H04L 25/03057 (2013.01)

Citation (search report)

See references of WO 9953658A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

GB 2336277 A 19991013; GB 2336277 B 20031231; GB 9807600 D0 19980610; AU 3431299 A 19991101; EP 1070411 A1 20010124; WO 9953658 A1 19991021

INPADOC legal status


2003-05-14 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021101

2001-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001103

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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