The Detection Methods Based on the Fourth-order Moment Slices and the Accumulation for DSSS/QPSK Signal
Zhao, Z.
Xing, G.
Wu, J.
Hangzhou Dianzi Univ., Zhejiang;
This paper appears in: Signal Processing, 2006 8th International Conference on
Publication Date: 16-20 2006
Volume: 4,
Location: Beijing,
ISBN: 0-7803-9736-3
INSPEC Accession Number: 9464551
Digital Object Identifier: 10.1109/ICOSP.2006.346026
Current Version Published: 2007-04-10
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
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