Title:
QAM変調における伝送チャネルで送信される観測データの移送とゲインの推定方法
Document Type and Number:
Japanese Patent JP2008514075
Kind Code:
A
Abstract:
The invention concerns a method for estimating the gain and/or the phase of observation data (yk) transmitted in QAM modulation. The method includes (A) iteratively estimating the phase and/or gain parameters based on a specific phase and/or gain law and (B) executing an adaptive procedure for estimating the phase and/or gain parameters, the adaptive procedure including at least one function for estimating the parameters based on the value of likelihood probability, expressed in terms of log-likelihood, of each observation data (yk) with respect to the set of bits constituting the symbols of the QAM modulation. The invention is applicable to single-carrier or multicarrier digital transmissions.
Inventors:
Jure, Benoit
Barbo, Jean-Pierre
Brosier, Jean-Marc
Bunstra Sale, Christoph
Barbo, Jean-Pierre
Brosier, Jean-Marc
Bunstra Sale, Christoph
Application Number:
JP2007531800A
Publication Date:
May 01, 2008
Filing Date:
September 16, 2005
Export Citation:
Assignee:
Ecole Polytechnique/Dgar
École Normal Superiur Ducachan
The Institute Nacional Polytechnic de Grenoble
École Normal Superiur Ducachan
The Institute Nacional Polytechnic de Grenoble
International Classes:
H04L27/34; H03M13/25; H03M13/35; H04J11/00; H04L1/00
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Yoshio Mizutani
Koichi Itsubo
Jun Tsuruta
Tetsuro Shimada
Yoshio Mizutani
Koichi Itsubo