Four-level pseudorandom sequences
C. Balza, A. Fromageot, M. Maniere · Electronics Letters · 1967
Four-level pseudorandom sequences of 4m−1 elements are generated as the quotient of Xn+1, with n=4m−1, by a primitive polynomial of degree m over GF (4). Formulas for mean value, root-mean-square value, crosscorrelation factor and spectral density are given. A shift register, using binary operators, generating such a sequence, is represented.