Patent ID: 7817715

Claim:
A space-time coding method for an ultra-wide band transmission system including three radiative elements, comprising: receiving, by a space-time coding device, a block of nine data symbols (S=(a 1 ,a 2 ,a 3 ,a 4 ,a 5 ,a 6 ,a 7 ,a 8 ,a 9 )) belonging to a pulse position modulation constellation or a pulse position and amplitude composite modulation constellation, having a number of time positions equal to 3 or greater than or equal to 5; coding, by the space-time coding device, the block of nine data symbols in nine vectors (c 1 0 ,c 2 0 ,c 3 0 ,c 1 1 ,c 2 1 ,c 3 1 ,c 1 2 ,c 2 2 ,c 3 2 ); using, by the space-time coding device, components of the vectors to modulate a ultra-wide band pulse signal for a radiative element of said system and for a given transmission interval (T f ), each vector being obtained from a distinct linear combination of three of said data symbols; applying, by the space-time coding device, a permutation of the components to a subset of said vectors (c 1 2 ,c 1 1 ,c 2 2 ) before modulating said ultra-wide band pulse signal; and transmitting, by at least one of said three radiative elements, said ultra-wide band pulse signal.