| 摘要 |
The method involves coding information symbols of a pulse position modulation (PPM) modulation alphabet or a composite PPM-pulse amplitude modulation (PAM) modulation alphabet, by a source terminal, for providing a sequence of four symbols for transmission by frames. The symbols are obtained from linear combinations of the symbols by coefficients of a real order algebraic extension of a body of rational numbers. PPM components are permuted, for one of the transmission symbols of a preset row in the frames. A ultra-wideband (UWB) pulse signal is modulated by using the transmission symbols. An independent claim is also included for a coding device for a ultra wideband (UWB) telecommunication terminal that transmits a signal to a recipient terminal during a transmission interval constituted by frames. |
