EP 1103124 A1 20010530 - RECEIVER FOR DIGITAL SIGNALS PROPAGATED IN CHANNELS WITH MULTIPLE PATHS
Title (en)
RECEIVER FOR DIGITAL SIGNALS PROPAGATED IN CHANNELS WITH MULTIPLE PATHS
Title (de)
EMPFÄNGER FÜR DIGITALE SIGNALE, DIE IN MEHRWEGKANÄLEN ÜBERTRAGEN WERDEN
Title (fr)
RECEPTEUR DE SIGNAUX NUMERIQUES PROPAGES DANS DES CANAUX AVEC PLUSIEURS TRAJETS
Publication
Application
Priority
- EP 9905572 W 19990730
- IT MI981839 A 19980805
Abstract (en)
[origin: WO0008816A1] A method and a receiver for equalization of received digital signals r(n) propagating in a scattered communication channel with multiple time-unvarying and also time-varying paths which give rise to time and frequency distortions with channel pulsed response (CIR) having total length equal to L symbol intervals. In accordance with the method the scattered channel state is divided in three components and to wit the observable, close hidden and distant hidden states. The channel is then estimated on the basis of a vector <u>p</u>'(n) of the a posteriori probabilities (APP) of the observable state <u>b</u>'(n) and on the basis of the received sequence r(n) and the received symbol decision is made on the basis of a maximum a posteriori probability (MAP) based on the above mentioned APP vector <u>p</u>'(n) of the channel observable state. The CIR can be estimated in relation to a probe sequence contained in the received signal and the result of the estimate is used during reception of the remaining part of the signal and if necessary updated if the channel is time-varying.
IPC 1-7
IPC 8 full level
H04L 25/02 (2006.01); H04L 25/03 (2006.01)
CPC (source: EP)
H04L 25/0212 (2013.01); H04L 25/03171 (2013.01); H04L 2025/03796 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 0008816 A1 20000217; AU 5418099 A 20000228; CA 2339499 A1 20000217; CN 1369162 A 20020911; EP 1103124 A1 20010530; IT 1301907 B1 20000707; IT MI981839 A0 19980805; IT MI981839 A1 20000205
DOCDB simple family (application)
EP 9905572 W 19990730; AU 5418099 A 19990730; CA 2339499 A 19990730; CN 99811639 A 19990730; EP 99940115 A 19990730; IT MI981839 A 19980805