公开(公告)号：US20020060984A1

公开(公告)日：2002-05-23

申请号：US09919009

申请日：2001-07-31

Applicant: France Telecom

Inventor： Vincent Michon ,  Bernard Le Floch ,  Bertrand Bueur ,  Marc Riviere

IPC: H04H001/04

CPC classification number: H04L5/023 ,  H04L27/2602

Abstract: The invention relates to a signal intended to be transmitted towards a plurality of receivers, of the type comprising at least two source signals and consisting of a plurality of independently modulated substantially orthogonal carrier frequencies distributed over a predetermined frequency band. According to the invention, said frequency band null(12)null is divided into at least two frequency sub-bands null(131-134)null each comprising a set of said substantially orthogonal carrier frequencies null(11)null, and to each of said sub-bands is allocated one of said source signals, so that a receiver may retrieve from the transmitted signal, by filtration, at least one of said sub-bands and perform demodulation processing only on the carrier frequencies contained in the retrieved sub-bands. The invention also relates to a transmission process as well as to a receiver of such signal.

Abstract translation: 本发明涉及一种旨在向多个接收机传输的信号，包括至少两个源信号，并由分布在预定频带上的多个独立调制的基本上正交的载波频率组成。 根据本发明，所述频带[（12）]被分成至少两个每个包括一组所述基本上正交的载波频率[（11）]的频率子带[（131-134）]，并且分别 所述子带被分配为所述源信号之一，使得接收机可以通过过滤从所发送的信号中检索所述子带中的至少一个，并且仅对包含在所检索的子带中的载波频率进行解调处理 。 本发明还涉及传输过程以及这种信号的接收机。