Patent ID: 6363108
Filing Date: 2002-03-26
Classification: H04B

Abstract:
A programmable matched filter searcher comprising:a shift register for receiving sets of incoming in-phase(I) data; a shift register for receiving sets of incoming quadrature(Q) data; a PN generator for generating PN sequences; a matched filter having: a despreader for receiving said sets of I data, said sets of Q data, and said PN sequences and for producing sets of despread I values and producing sets of despread Q values; a summer for summing said sets of despread I values to produce I sums; a summer for summing said sets of despread Q values to produce Q sums; an I accumulator for receiving said I sums and accumulating them in sets to produce a set of accumulated I sums; a Q accumulator for receiving said Q sums and accumulating them in sets to produce a set of accumulated Q sums; and an energy calculator for receiving sets of accumulated I sums and sets of accumulated Q sums, squaring respective ones of sets of accumulated I sums, squaring respective ones of sets of accumulated Q sums, and summing the results of said squares of respective ones of sets of I and Q sums to produce sets of energy values.