Multiple parameters estimation simultaneously for DS-SS/BPSK signal based on fourth-order cumulant 2D slice

Author

Shen, Zhenhui ; Tang, Bin ; Lv, Yan ; Zhu, Xiaowu

Author_Institution

Coll. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

2

fYear

2004

Firstpage

867

Abstract

Direct sequence spread spectrum (DS-SS) signals have been widely used in military systems to counter jamming or to provide low probability of interception and detection. Since the DS-SS signal uses a large bandwidth, the power spectral density can be below the noise level. Hence, such a signal is difficult to detect. We propose a detection method based on fourth-order cumulant 2D slice for a DS-SS/BPSK signal far below the noise level. It does not require a priori knowledge about the signal, and can estimate the carrier frequency and the symbol period simultaneously. The validity of this method, even in low signal-to-noise ratio (SNR) conditions, has been shown by computer simulation.

Keywords

frequency estimation; higher order statistics; jamming; military communication; parameter estimation; phase shift keying; random noise; signal detection; spread spectrum communication; DS-SS/BPSK signal; SNR; a priori knowledge; carrier frequency estimation; direct sequence spread spectrum signals; fourth-order cumulant 2D slice; jamming; military systems; multiple parameter estimation; power spectral density; signal detection probability; signal interception probability; signal-to-noise ratio; symbol period estimation; Bandwidth; Binary phase shift keying; Computer simulation; Counting circuits; Frequency estimation; Jamming; Noise level; Parameter estimation; Signal to noise ratio; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346318

Filename

1346318