Title :
Suppression of narrowband interference in DSSS systems based on MWPT and CWPT
Author :
Jiang, Mingyan ; Yuan, Dongfeng ; Xu, Guoping
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
Two new narrow band interference (NBI) suppression methods based on multi-band wavelet packet transform (MWPT) and complex wavelet packet transform (CWPT) in direct sequence spread spectrum (DSSS) systems are presented in this paper. With these two techniques, jammed DSSS signal is decomposed separately using MWPT and CWPT in order to separate desirable signal from jamming signal. The DSSS signal is recovered by wavelet reconstruction after the interference signal is filtered out. The results of our simulations show that these two techniques outperform the scheme based on 2-band wavelet packet transform.
Keywords :
interference suppression; radiofrequency interference; spread spectrum communication; wavelet transforms; CWPT; DSSS system; MWPT; NBI suppression method; complex wavelet packet transform; direct sequence spread spectrum; multiband wavelet packet transform; narrowband interference; Finite impulse response filter; Gabor filters; Interference suppression; Narrowband; Space technology; Spread spectrum communication; Wavelet analysis; Wavelet packets; Wavelet transforms; Wiener filter;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618232
