Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband transmitter, and each of the unspread...http://www.google.fr/patents/US7339955?utm_source=gb-gplus-shareBrevet US7339955 - TDMA communication method and apparatus using cyclic spreading codes
TDMA communication method and apparatus using cyclic spreading codes