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A011686
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A binary m-sequence: expansion of reciprocal of x^7 + x^6 + 1.
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1
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0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1
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OFFSET
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0,1
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COMMENTS
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REFERENCES
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S. W. Golomb, Shift-Register Sequences, Holden-Day, San Francisco, 1967.
H. D. Lueke, Korrelationssignale, Springer 1992, pp. 43-48.
F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier/North Holland, 1978, p. 408.
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LINKS
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FORMULA
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PROG
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(MATLAB)
Feedback_shiftregister =[1, 1, 0, 0, 0, 0, 0]; % x^7 + x^6 (+1)
sequence = [0 0 0 0 0 0 1]; % start sequence
for i = 1:127-7
sequence(i+7)=mod(Feedback_shiftregister*sequence(i:i+6)', 2)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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