Global Patent Index - EP 1050142 A2

EP 1050142 A2 2000-11-08 - RADIO TELEPHONE FOR SPREAD-SPECTRUM SYSTEM USING NONLINEAR MODULATION

Title (en)

RADIO TELEPHONE FOR SPREAD-SPECTRUM SYSTEM USING NONLINEAR MODULATION

Title (de)

FUNKTELEFON FÜR SYSTEM MIT SPREIZSPEKTRUM UND NICHTLINEARER MODULATION

Title (fr)

RADIOTELEPHONE POUR SYSTEME A ETALEMENT DU SPECTRE ET MODULATION NON LINEAIRE

Publication

EP 1050142 A2 (EN)

Application

EP 99901764 A

Priority

  • GB 9900202 W
  • GB 9801302 A
  • GB 9801305 A
  • GB 9801306 A
  • GB 9801308 A
  • GB 9804600 A
  • GB 9805126 A
  • GB 9805234 A
  • GB 9805504 A
  • GB 9814300 A

Abstract (en)

[origin: GB2350762A] A method is provided for despreading a signal which has been spread by a code and modulated according to a non-linear modulation scheme. The method comprises transforming the code into a succession of phasor positions (405) and correlating the spread signal with the transformed code (406). A despreader, demodulator and communications device implementing such a method are also provided.

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

H04L 27/227; H04B 1/707; H04L 25/03; H04L 27/20

IPC 8 full level (invention and additional information)

H04L 27/14 (2006.01); H04B 1/40 (2006.01); H04B 1/707 (2011.01); H04L 25/03 (2006.01); H04L 27/20 (2006.01); H04L 27/22 (2006.01); H04L 27/227 (2006.01); H04L 27/36 (2006.01); H04L 27/26 (2006.01); H04L 27/32 (2006.01)

CPC (invention and additional information)

H04B 1/707 (2013.01)

Citation (search report)

See references of WO 9938300A3

Designated contracting state (EPC)

DE ES FR IE IT NL SE

EPO simple patent family

GB 0018658 D0 20000913; GB 2350762 A 20001206; AU 2176599 A 19990809; CN 1294807 A 20010509; EP 1050142 A2 20001108; GB 2333674 A8 19991007; GB 2333674 A 19990728; GB 2333674 B 20030827; GB 9824426 D0 19990106; JP 2002502150 A 20020122; WO 9938300 A2 19990729; WO 9938300 A3 19991028

INPADOC legal status


2003-10-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030403

2003-01-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021122

2002-03-13 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NOKIA CORPORATION

2000-11-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000821

2000-11-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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