Noncoherent UWB cooperative communications system

Details Noncoherent UWB cooperative communications system Noncoherent UWB cooperative communications system

2011-07-19

2011-07-19

Burd, Kevin M (Department: 2611)

Pulse or digital communications

Pulse position, frequency, or spacing modulation

C375S211000, C375S130000

Reexamination Certificate

active

07983334

ABSTRACT:
A method between terminals in a cooperative UWB pulse telecommunications system including a source terminal, a relay terminal, and a recipient terminal, the method including: transmitting, at the source terminal, a data symbol for the recipient terminal as a source signal constituted by a sequence of identical frames, the 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, the 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; transmitting, at the relay terminal, a relayed signal containing, in at least one predetermined subsequent frame of the 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.

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