Title :
The Detection Methods Based on the Fourth-order Moment Slices and the Accumulation for DSSS/QPSK Signal
Author :
Zhao, Zhijin ; Xing, Guoji ; Wu, Jia
Author_Institution :
Hangzhou Dianzi Univ., Zhejiang
Abstract :
This paper applies the higher order statistical theory to the detection of the DSSS signal, and proposes time domain and frequency domain detection methods based on the fourth-order moment different slices. Simulation results show that the detection performance of frequency domain method is better than that of the time domain method, its detection probability is above 50% at SNR -20 dB. Using the accumulation technology, the detection performance improves 5 dB. The proposed methods don´t involve extensive matrix operations, so they are easy to implement and their computation complexities are low
Keywords :
computational complexity; frequency-domain analysis; higher order statistics; quadrature phase shift keying; signal detection; spread spectrum communication; time-domain analysis; DSSS-QPSK signal detection methods; accumulation technology; computation complexities; detection probability; fourth-order moment slices; frequency domain detection methods; higher order statistical theory; time domain detection methods; Additive noise; Frequency domain analysis; Military communication; Multiaccess communication; Phase modulation; Probability; Quadrature phase shift keying; Signal analysis; Spread spectrum communication; Wideband;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.346026
