Zhang Xiao-lin, Guo Li-li. Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm[J]. Journal of Electronics & Information Technology, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805
Citation:
Zhang Xiao-lin, Guo Li-li. Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm[J]. Journal of Electronics & Information Technology, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805
Zhang Xiao-lin, Guo Li-li. Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm[J]. Journal of Electronics & Information Technology, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805
Citation:
Zhang Xiao-lin, Guo Li-li. Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm[J]. Journal of Electronics & Information Technology, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805
In direct sequence spread spectrum narrow-band interference suppression is one of the difficult tasks in signal processing. This paper proposes a new narrow-band interference suppression algorithm called side correlation replacement algorithm based on side band correlation of signal. The signal carrier and center frequency of narrow interference are fixed on by calculating the side correlation function. Then narrow-band interference is eliminated when it is replaced by side correlation value. This algorithm is good for all modulation whose spectrum is symmetry. Computer simulation results demonstrate that the algorithm is more effective than transform domain interference returns zero.
Milstein L B. Interference rejection techniques in spread spectrum communication[J].Proc IEEE.1988, 76(6):657-671[2]Li Lob-Ming and Milstein L B. Rejection of narrow-band interference in PN spread-spectrum system using transversalfilters[J].IEEE Trans. on Comm.1982, 30(5):925-928[3]Yong J A and Lehnert J S. Analysis of DFT-based frequency excision algorithms for direct-sequence spread-spectrum sommunications[J].IEEE Trans. on Commun.1998, 46(8):1076-1087[4]Chael J M, SaulnierM G J, and Das P K. Narrow band interference excision in spread spectrum systems using apped transforms[J].IEEE Trans. on Comm.1997, 45(11):1444-1455[5]Hill P C J. Techniques for detecting and charactering covert communication signals. European Conference on Security and Detection, MILCOM, 1997: 57-60.[6]许光辉, 赵海波, 崔小准. 码分多址系统中基于判决引导的窄带干扰抑制非线性算法[J]. 上海交通大学学报. 2005, 9(39): 1544-1547.
DownLoad: