Patent ID: 7983334
Filing Date: 2011-07-19
Classification: H04B,H04L,H04W

Abstract:
1. A method between terminals in a cooperative UWB pulse telecommunications system including a source terminal, a relay terminal, and a recipient terminal, said method comprising: transmitting, at the source terminal, a data symbol to the recipient terminal as a source signal constituted by a sequence of identical frames, said sequence corresponding to a symbol time, and each frame containing a pulse that is position-modulated by a PPM modulation alphabet; receiving, at the relay terminal, said source signal; detecting, at the relay terminal, a modulation position of a pulse in at least one frame of the source signal, referred to as the first position; and transmitting, at the relay terminal, a relayed signal containing, in at least one predetermined subsequent frame of said symbol time, a pulse of which a position, referred to as a second position, is obtained from the first position by a permutation of the PPM modulation alphabet.