On the 2-Adic Complexity and the k-Error 2 -Adic Complexity of Periodic Binary Sequences

Author

Hu, Honggang ; Feng, Dengguo

Author_Institution

Chinese Acad. of Sci., Beijing

Volume

54

Issue

2

fYear

2008

Firstpage

874

Lastpage

883

Abstract

A significant difference between the linear complexity and the 2-adic complexity of periodic binary sequences is pointed out in this correspondence. Based on this observation, we present the concept of the symmetric 2-adic complexity of periodic binary sequences. The expected value of the 2-adic complexity is determined, and a lower bound on the expected value of the symmetric 2-adic complexity of periodic binary sequences is derived. We study the variance of the 2-adic complexity of periodic binary sequences, and the exact value for it is given. Because the k-adic complexity of periodic binary sequences is unstable, we present the concepts of the kappa-error 2-adic complexity and the k-error symmetric 2-adic complexity, and lower bounds on them are also derived. In particular, we give tighter upper and lower bounds for the minimum k-adic complexity of l-sequences by substituting two symbols within one period.

Keywords

binary sequences; computational complexity; feedback; shift registers; k-error 2-adic complexity; linear complexity; periodic binary sequences; Application software; Approximation algorithms; Arithmetic; Binary sequences; Feedback; Information security; Laboratories; Random sequences; Research and development; Shift registers; $k$-error $2$-adic complexity; $k$-error symmetric $2$-adic complexity; $l$-sequence; $2$-adic complexity; expected value; periodic binary sequence; symmetric $2$-adic complexity; variance;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2007.913238

Filename

4439852