Patent ID: 8154984

Claim:
Method of generation of a plurality of discrete spectra ŝ(i) of dimension Q, mutually orthogonal and of controlled power, i designating the number of the spectrum, said spectra representing temporal signals in the spectral domain and being of constant modulus μ in a set G designating spectrum lines and zero everywhere else, said method comprising the followings steps that are performed by processing means of a discrete spectra generating device: determining ( 20 ) at least part of a complex Hadamard matrix H of order d R =w in the case of real signal spectra and d R =2.w in the case of complex signal spectra; determining ( 22 ) the prolongation P of the matrix H from G and from the dimension Q; and obtaining ( 22 ) said controlled power spectra ŝ(i)=μ.P(H[.][i]), where H[.][i] designates the i th column of the matrix H.