Title :
Chip code manipulation for interference rejection in DS/SS systems
Author :
Comley, V.E. ; Hill, P.C.J. ; Barfoot, R.D.
Author_Institution :
R. Mil. Coll. of Sci., Swindon, UK
Abstract :
Novel methods for rejecting narrowband interference and jamming in direct sequence/spread spectrum (DS/SS) systems are reported. The proposed techniques, essentially based on digital transmission code schemes, are applied here to the chip code sequence. The authors specifically consider the use of simple digital filtering as in pseudorandom systems and also code-sequence interleaving in order to generate the required spectral nulls. Computer simulated power-spectrum density function results are presented, and these suggest that chip-code interleaving is very promising.<>
Keywords :
codes; filtering and prediction theory; interference suppression; jamming; spread spectrum communication; DS/SS systems; chip code sequence; code-sequence interleaving; computer simulation; digital filtering; digital transmission; direct sequence spread spectrum systems; interference rejection; jamming; narrowband interference; power-spectrum density function; pseudorandom systems; spectral nulls; Computational modeling; Computer simulation; Density functional theory; Digital filters; Filtering; Interference; Interleaved codes; Jamming; Narrowband; Spread spectrum communication;
Conference_Titel :
Military Communications Conference, 1988. MILCOM 88, Conference record. 21st Century Military Communications - What's Possible? 1988 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/MILCOM.1988.13504
