The importance of recurrence sequences hardly needs to be explained. Their study is
plainly of intrinsic interest and has been a central part of number theory for many years …

This paper classifies all cyclic codes over Z4 of length 2n, n odd. Descriptions are given in
terms of discrete Fourier transforms, generator polynomials, parity check matrices, and the …

Compared with the perfect complementary sequence sets, quasi-complementary sequence
sets (QCSSs) have the advantage of supporting more users in multicarrier CDMA …

The design of pseudorandom sequences with optimal correlation properties forms a crucial
part of communications and radar engineering. Perfect autocorrelation sequences are …

Sequences with low correlation have important applications in communications, radar, and
cryptography. In this paper, a simple construction of polyphase sequences using additive …

Compared with the perfect complementary sequence sets, quasi-complementary sequence
sets (QCSSs) can support more users to work in multicarrier CDMA communications. A near …

In this note, by using a modification of the families B and C, we obtain a larger family of
optimal quadriphase sequences, D over Z 4. In contrast to the families B and C, the family D …

This paper gives new families of quadriphase sequences obtained from large linear
complexity sequences over Z 4 by making use of generalized permutation monomials over …

We determine the exact values of the linear complexity of 2p-periodic quaternary sequences
over Z_4 (the residue class ring modulo 4) defined from the generalized cyclotomic classes …

We define a family of quaternary sequences over the residue class ring modulo 4 of length
pq, a product of two distinct odd primes, using the generalized cyclotomic classes modulo pq …