EP 0929949 A1 19990721 - METHOD AND APPARATUS FOR PRECORRECTING TIMING AND FREQUENCY IN COMMUNICATION SYSTEMS
Title (en)
METHOD AND APPARATUS FOR PRECORRECTING TIMING AND FREQUENCY IN COMMUNICATION SYSTEMS
Title (de)
VERFAHREN UND EINRICHTUNG ZUR VORKORREKTUR VON ZEIT-UNDFREQUENZVERSCHIEBUNGEN IN ÜBERTRAGUNGSSYSTEMEN
Title (fr)
PROCEDE ET DISPOSITIF SERVANT A EFFECTUER LA CORRECTION PREALABLE DE LA SYNCHRONISATION ET DE LA FREQUENCE DANS DES SYSTEMES DE COMMUNICATION
Publication
Application
Priority
- US 9717380 W 19970926
- US 72349096 A 19960930
Abstract (en)
[origin: WO9815071A1] A method and apparatus for precorrecting timing and frequency in a communication system (100) that employs satellites (116, 118) to reduce timing uncertainty and frequency uncertainty due to satellite motion. A transmitted signal (410) is precorrected, or compensated (342), to account for effects based on known satellite mo tion as the transmitted signal propagates from the transmitter (120) to the satellite (116). Removing these effects reduces the amount of uncertainty in the transmitted signal when it arrives at the receiver (124), thereby making the task of signal reception easier.
IPC 1-7
IPC 8 full level
H04B 7/01 (2006.01); H04B 7/185 (2006.01); H04B 7/212 (2006.01)
CPC (source: EP KR)
H04B 7/01 (2013.01 - EP KR); H04B 7/18513 (2013.01 - EP); H04B 7/2125 (2013.01 - EP)
Citation (search report)
See references of WO 9815071A1
Citation (third parties)
Third party :
- US 5666648 A 19970909 - STUART JAMES R [US]
- US 5644572 A 19970701 - OLDS KEITH ANDREW [US], et al
- US 5566354 A 19961015 - SEHLOEMER JERRY R [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9815071 A1 19980409; AU 4654397 A 19980424; AU 719962 B2 20000518; CA 2267169 A1 19980409; CN 1140068 C 20040225; CN 1238866 A 19991215; EP 0929949 A1 19990721; JP 2001501419 A 20010130; JP 2009201143 A 20090903; KR 100791824 B1 20080104; KR 20000049034 A 20000725; TW 448646 B 20010801; ZA 978516 B 19980610
DOCDB simple family (application)
US 9717380 W 19970926; AU 4654397 A 19970926; CA 2267169 A 19970926; CN 97180170 A 19970926; EP 97945314 A 19970926; JP 2009112965 A 20090507; JP 51670398 A 19970926; KR 19997003102 A 19990330; TW 86114248 A 19980321; ZA 978516 A 19970922