mehrfachzugangskommunikation on the basis of a pulse ultrabreitband - s

摘要

Method of communication with multiple access network in a centralized based on a physical layer ultra wide band by a pulse for multiple access code, each user being associated with a code, the bare users transrnettant in the same time in a propagation medium to multiple paths. It is characterized in that it sets up a criterion in order to find the codes of the different users making it possible to minimize the variance of the interference multi - users jn at the output of a receiver, the received signal r (t) coming from a user being expressed in the form of a sum of the signal of value rn (t) coming from the user and a term corresponding to the interference multi - users, jn wherer (t) = rn (t) + jn + n (t) with which a & k & n and tau k & n are respectively the amplitude and the delay of the k th path of the transmission channel between the user and the receiver.