Design of spreading sequences with negative auto-correlations realizable by nonlinear feedback shift registers

Author

Tsuneda, Akio ; Yoshioka, Daisaburo ; Hadate, Takashi

Author_Institution

Kumamoto Univ., Japan

fYear

2004

fDate

30 Aug.-2 Sept. 2004

Firstpage

330

Lastpage

334

Abstract

Spreading sequences with a negative auto-correlation for time-delay one are designed based on the Bernoulli and tent maps which are well-known one-dimensional chaotic maps. We also show that maximal-period binary sequences with negative auto-correlation based on such maps with finite bits can be generated by a class of nonlinear feedback shift registers (NFSRs). Furthermore, we perform computer simulations of asynchronous DS/CDMA communications using such negatively auto-correlated spreading sequences.

Keywords

binary sequences; chaos; code division multiple access; correlation methods; delays; shift registers; spread spectrum communication; 1D chaotic maps; Bernoulli map; asynchronous DS-CDMA communications; asynchronous DS/CDMA communications; maximal-period binary sequences; negative autocorrelation; nonlinear feedback shift registers; one-dimensional chaotic maps; spreading sequence design; tent map; Autocorrelation; Binary sequences; Bit error rate; Chaotic communication; Computer simulation; Multiaccess communication; Multiple access interference; Negative feedback; Shift registers; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on

Print_ISBN

0-7803-8408-3

Type

conf

DOI

10.1109/ISSSTA.2004.1371716

Filename

1371716