Abstract
The almost perfect binary sequences have been defined in [6] as (−1, +1)-periodic sequences such that all their out-of-phase autocorrelation coefficients are zero except one. In the preceding paper, the study of the almost perfect binary sequences is done by means of the ringF 2[X]/(X n−1). Here, the arithmetic of cyclotomic fields enables us to solve open problems and questions like: structure and existence of these sequences.
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Langevin, P. Almost perfect binary functions. AAECC 4, 95–102 (1993). https://doi.org/10.1007/BF01386833
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DOI: https://doi.org/10.1007/BF01386833