Convoluted code matched filter

Details Convoluted code matched filter Convoluted code matched filter

H - Electricity

03

H

333/34, 328/0.7

H03H 17/04 (2006.01) H03H 17/02 (2006.01)

Patent

CA 1151248

CONVOLUTED CODE MATCHED FILTER ABSTRACT OF THE DISCLOSURE A structure and a method for detecting a binary convoluted coded signal having a plurality of code levels ranging from a low level, high repetition rate code to a high level, low repetition rate code, in which elements of the convoluted coded signal are successively stored in a first memory such as a tapped delay line. The stored code is sampled at tap location intervals defined by the high level code to obtain a set of first samples. The first samples are then translated, each with a polarity coefficient determined by the high level code at the tap locations. The translated first samples are then summed, and fed successively into a second memory such as a tapped delay line adapted to store the summed first samples. The summed first samples are sampled at second tap location intervals defined by the lower level code to obtain a set of second samples. The samples of the lower level code are translated each with a polarity coefficient determined by the lower level code at the second tap locations. The translated lower level code is then summed in an adder to obtain an output signal. The sequence is continued for all the code levels in the signal.

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