Global Patent Index - EP 1317827 A2

EP 1317827 A2 2003-06-11 - PILOT-ASSISTED CHANNEL ESTIMATION WITH PILOT INTERPOLATION

Title (en)

PILOT-ASSISTED CHANNEL ESTIMATION WITH PILOT INTERPOLATION

Title (de)

KANALSCHÄTZUNG MITTELS PILOTSIGNALE MIT INTERPOLATION DER PILOTSIGNALE

Title (fr)

EVALUATION DE CANAUX ASSISTEE PAR PILOTE

Publication

EP 1317827 A2 (EN)

Application

EP 01969721 A

Priority

  • EP 01969721 A
  • EP 0110680 W
  • EP 00120083 A

Abstract (en)

[origin: WO0223840A1] The present invention relates to a method for pilot-assisted channel estimation for code channels comprising pilot symbols interlaced to other data symbols. For improving the adaptation to different channel situations the invention proposes that a received code channel is sampled to form symbol samples, replacing symbol samples relating not to pilot symbol samples by substitute symbols, post-processing the data stream that includes the substitute symbols and adapting the rate of the post-processed data stream. The invention also relates to an adaptive interpolation method for pilot-assisted channel estimation. To improve interpolation the invention further proposes to evaluate the channel situation and switch between at least two different interpolation methods in respect to the channel evaluation results.

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

H04L 25/02

IPC 8 full level (invention and additional information)

H04L 25/02 (2006.01); H04B 1/707 (2011.01)

CPC (invention and additional information)

H04L 25/0232 (2013.01); H04L 25/0202 (2013.01); H04L 25/0234 (2013.01); H04B 1/7115 (2013.01); H04B 2201/70701 (2013.01)

Citation (search report)

See references of WO 0223840A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0223840 A1 20020321; WO 0223840 A8 20020606; AU 8988401 A 20020326; EP 1317827 A2 20030611

INPADOC legal status


2016-09-21 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20160401

2007-10-03 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20070904

2004-05-06 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

2003-06-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030301

2003-06-11 [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 TR

2003-06-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI