Patent ID: 7099396

Claim:
A method for the modulating of a multicarrier signal with a density 1/(ν o ,τ o )=2, formed by successive symbols, each comprising M samples to be transmitted and constituted by a set of 2M orthogonal carrier frequencies in the real sense, the interval between two neighboring carrier frequencies being equal to ν o and the interval between the times of transmission of two consecutive symbols, or the symbol time, being equal to τ o , each of said carrier frequencies being modulated according to one and the same modulation prototype function g(t) with a truncation length of 2Lτ o , L being an integer representative of said truncation length, comprising, at each symbol time, the following steps: obtaining a set of 2M complex coefficients representing data to be transmitted; computing 2LM linear combinations from said 2M complex coefficients obtained, said combination using weighting coefficients representing said prototype function g(t), so as to obtain 2LM coefficients; summing said 2LM coefficients weighted in predetermined storage locations of a memory comprising 2LM storage locations representing 2L groups of M distinct partial sums, so as to gradually form, in said 2LM storage locations, over a duration of 2Lτ o , M samples to be transmitted; and transmitting said samples to be transmitted.