Patent ID: 8194716

Claim:
A space-time coding method for an ultra-wide band (UWB) transmission system including a plurality of radiative elements, said method comprising: coding a block of information symbols S=(σ 1 ,σ 2 , . . . ,σ p ) belonging to a pulse position modulation (PPM) alphabet, into a sequence of vectors, components of a vector of said sequence position-modulating a UWB pulse signal for a given radiative element of said system and a given use of a transmission channel, each component corresponding to a PPM modulation position, wherein said vectors are obtained from the elements of matrix C = ( σ 1 σ 2 … σ P Ω ⁢ ⁢ σ P σ 1 ⋱ ⋮ ⋮ ⋱ ⋱ σ 2 Ω ⁢ ⁢ σ 2 … Ω ⁢ ⁢ σ P σ 1 ) wherein a row of the matrix C corresponds to a use of the transmission channel and a column of the matrix C corresponds to a radiative element, the matrix C being defined to within a permutation of its rows and/or its columns and Ω being a permutation of the PPM modulation positions.