Document Type: Regular Paper
Department of Mathematics, College of Sciences, Shiraz University, Shiraz, I. R. of Iran
In this work we deal with the coefficients of A (e it ) 2 , where A is in a class of polynomials
having Unimodular coefficients. We first present a technique that calculates lower bounds for particular
autocorrelations and then in a more general case we present an upper bound for their maximal order.