Patent ID: 8705469

Claim:
A method of sending a data signal comprising a series of symbols called current to a receiver, said method comprising the generation of number (NE) of orthogonal frequency division multiplex signals i.e. Orthogonal frequency-division multiplexing (OFDM) signals each formed of N f sub carriers, the NE OFDM signals respectively being simultaneously transmitted by NE transmitter entities, NE>1, for each succession of Nf current symbols the method comprises the steps of: generating NE succession of N f /2 pairs of symbols from the N f current symbols, comprising for each current pair of said succession of N f /2 pairs of symbols the substeps of: collecting a set of quality indicators of propagation channels between the transmitter entities and said receiver; generating N ortho ≧1 pairs of symbols orthogonal [y 2k , y 2k+1 ] to the current pair [s 2k , s 2k+1 ] of symbols; generating N duplic ≧1 replica by duplicating the current pair of symbols; and allocating said current pair of symbols, said N ortho orthogonal pair of symbols and said N duplic replica to respectively the NE transmitter entities, and selecting the allocation of the N ortho orthogonal pairs of symbols to the transmitter entities whose quality indicators are maximum or minimum; and generating said NE OFDM signals from respectively the NE succession of N f /2 pairs of symbols wherein N ortho +N duplic +1=NE.