Title :
Detection of DSSS Signal in Non-Cooperative Communications
Author :
Chang, Liang ; Wang, Fuping ; Wang, Zanji
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
Direct sequence spread spectrum (DSSS) signal is widely used both in military and commercial communications. Because of the low power spectrum density, it is very difficult to detect in non-cooperative communications. In this paper, a novel detection algorithm was proposed based on Haar wavelet transform (HWT). The characteristics of DSSS signal after HWT was analyzed firstly, then the detection algorithm was implemented by calculating the second order moments of autocorrelations in wavelet domain. Simulation results show that the proposed method performs well in low SNR, and it is better than the representative method.
Keywords :
Haar transforms; correlation methods; signal detection; spread spectrum communication; wavelet transforms; DSSS signal detection; Haar wavelet transform; autocorrelation; direct sequence spread spectrum; low power spectrum density; noncooperative communication; Algorithm design and analysis; Autocorrelation; Detection algorithms; Military communication; Signal analysis; Signal detection; Spread spectrum communication; Wavelet analysis; Wavelet domain; Wavelet transforms;
Conference_Titel :
Communication Technology, 2006. ICCT '06. International Conference on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0800-8
Electronic_ISBN :
1-4244-0801-6
DOI :
10.1109/ICCT.2006.341701
