Chip code manipulation for interference rejection in DS/SS systems

New methods for rejecting narrowband interference and jamming in DS/SS communication system are reported.The conventional method of enhancing narrowband AJ performance is to place an excision filter in the signal input path to the receiver de-spreading correlator which introduces an adaptive spectral null at the jamming tone frequency in the wideband signal. The alternative technique proposed here manipulates the chip-code sequence in order to produce effective AJ spectral nulls in the signal spectrum over the correlation frames.Computer simulated results using simple DS/SS models are presented and suggest that chip-code processing is a very promising technique and, indeed, has some advantage over the excision filter method.

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OFDM Interference Suppression for DS/SS Systems using Complex FIR Filter

Shimizu

Sanada

2007

2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

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Chip code manipulation for interference rejection in DS/SS systems

Cited by 4 publications

References 5 publications

OFDM Interference Suppression for DS/SS Systems Using Complex FIR Filter

OFDM Interference Suppression for DS/SS Systems Using Complex FIR Filter

Interference Rejection In Direct-sequence Spread Spectrum By Chip-code Processing

OFDM Interference Suppression for DS/SS Systems using Complex FIR Filter

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