As a continuation from [2], some higherorder
statistical dependency aspects of chaotic spreading
sequences used in communication systems are presented.
The autocorrelation function (ACF) of the mean-adjusted
squares, termed the quadratic autocorrelation function,
forms the building block of nonlinear dependence assessment
of the family of spreading sequences under investigation.
Explicit results are provided for the theoretical lower
bound, the so-called Fr´echet lower bound, of the quadratic
ACF of that family. A method for producing a spreading
sequence which attains the Fr´echet bound is introduced
