Title:
電気ネットワークを介した複数ユーザOFDMデジタル送信システムのための通信最適化の方法
Document Type and Number:
Japanese Patent JP2004528782
Kind Code:
A
Abstract:
The invention relates to a communication optimization method for multi-user OFDM digital transmission systems using the electrical network. The receivers of the equipment (1, 2) monitor the quality of the communication and estimate the signal/noise ratio (S/N) of the uplink and downlink channel carriers. The user pieces of equipment (2) perform said surveillance independently of whether or not said equipment is the recipient of the transmission. The optimum transmission mode is selected using said surveillance consisting in modifying, packet by packet, the number of bits per carrier, the redundancy introduced by FEC generated error correction/detection codes, the actual FEC code and/or the transmission mode. In this way, the network can be divided up optimally in terms of frequency and time and the transmission capacity of the multiple pieces of user equipment can be maximised. The invention is suitable for point-to-multipoint bi-directional communication across the electrical network.
Inventors:
Jorge Vicente Brasco Claret
Juan Carlos Ribeiro Insua
Nils Harkan Foren
Francisco Javier Jimenez Markina
Feliciano Gomez Martinez
Louis Manuel Torres Canton
Aitor Garcia San Jose
Francisco Jose Brasco Abril
Carlos Pardo Vidal
Agustin Badnes Colella
Diego Arlandis Maronda
Angel Ramilo Manzano
Juan Carlos Ribeiro Insua
Nils Harkan Foren
Francisco Javier Jimenez Markina
Feliciano Gomez Martinez
Louis Manuel Torres Canton
Aitor Garcia San Jose
Francisco Jose Brasco Abril
Carlos Pardo Vidal
Agustin Badnes Colella
Diego Arlandis Maronda
Angel Ramilo Manzano
Application Number:
JP2002592321A
Publication Date:
September 16, 2004
Filing Date:
May 23, 2002
Export Citation:
Assignee:
DISENO DE SISTEMAS EN SILICIO, S.A.
International Classes:
H04J11/00; H04L1/00; H04L5/02; H04L27/26; H04B17/00; (IPC1-7): H04J11/00
Attorney, Agent or Firm:
Osamu Kawamiya
Masahiro Ishino
Masahiro Ishino