Process for the transmission of information by pulse response and the

Abstract

A differential receiver which receives a signal corresponding to transmission of a carrier modulated by symbols S.sub.k, where k is an integer designating an order of the symbol, each symbol S.sub.k has a duration Ts and carries information, and the symbols S.sub.k have been multiplied by a psuedorandom sequence. The differential receiver includes a first processing channel configured to receive a first part of the transmitted signal in phase with the carrier to generate samples I.sub.k and delayed samples I.sub.k-1. The receiver further includes a second processing channel configured to receive a second part of the transmitted signal in phase quadrature with the carrier to generate samples Q.sub.k and delayed samples Q.sub.k-1. In addition, the receiver includes a multiplication circuit configured to generate a signal Dot(k) equal to I.sub.k I.sub.k-1 +Q.sub.k Q.sub.k-1 and a signal Cross(k) equal to Q.sub.k I.sub.k-1 -I.sub.k Q.sub.k-1, a calculating mechanism configured to calculate, for each order k of a symbol, the following equation: E=[Dot(k).sup.2 +Cross(k).sup.2 ].sup.1/2, and configured to calculate a mean E.sup.moy, a weighting circuit having two multipliers configured to respectively multiply the signal E.sup.moy and the signals Dot(k) and Cross(k) to obtain a mean signal Dot(k).sup.moy and a mean signal Cross(k).sup.moy, and a circuit configured to receive the mean signal Dot(k).sup.moy and the mean signal Cross(k).sup.moy supplied by the calculating mechanism to integrate the mean signals on the time of a symbol and restore the corresponding information.