FIELD: radio engineering and communications.
SUBSTANCE: invention relates to the field of radio communication and can find application in systems using broadband signals. Method for decoding information signal elements encoded by Walsh sequences represented by rows of the Hadamard matrix of order n (sequences ), consisting in the fact that on the receiving side the base of sequences n is represented in the form n=n1+n2+…+ng of bits and decode an unknown sequence begins with the sequence of and sequences , derived from ƒ=n1 bits of corresponding sequences and , and, after determining the number P1 of sequence , its correctness is established by calculating the correlation function (CF) of the sequence with sequence and, in the case of exceeding the obtained value of the CF of a given threshold, number P1 is considered to be computed correctly and decoding is considered to be performed, otherwise, decoding an unknown sequence is carried out by means of a sequence of and sequences derived from ƒ=n1+n2 bits of corresponding sequences and with the implementation of the above actions, in the event that the CF has not exceeded the threshold, unknown sequence decoding after the next increase in the number of ƒ bit sequences and , decoding the sequence by the definition of the number Pƒ and its correctness until the correct value of the number Pƒ at ƒ=n.
EFFECT: faster decoding.
1 cl, 1 tbl
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Authors
Dates
2018-07-06—Published
2017-06-22—Filed