This invention relates to parallel architecture digital filter and signal
receiver with spectrum spreading using such a filter, the filter may have
p shift registers (R.sup.p, R.sup.i) with means for calculating a
weighted sum of stored samples in the registers, p weighted sums
(S.sub.k.sup.p, S.sub.k.sup.i) may be obtained and recombined with number
p being, for example, equal to 2.