Abstract
Several classes of quaternary sequences of even period with optimal autocorrelation have been constructed by Su et al. based on interleaving certain kinds of binary sequences of odd period, i.e. Legendre sequence, twin-prime sequence and generalized GMW sequence. In this correspondence, the exact values of linear complexity over finite field $\mathbb {F}_{4}$ and Galois ring $\mathbb {Z}_{4}$ of the quaternary sequences are derived, respectively.
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