Feasibility Assessment of Repeater Jamming Technique for DSSS

Direct sequence spread spectrum (DSSS) systems spread the baseband data signal over a broad bandwidth to achieve anti-jamming protection, which increase the difficulty of spectrum surveillance. The current jamming types, including broadband noise, partial-band noise and so on, are ineffective at the current jamming power level when the processing gain is large enough. This paper proposes a new jamming scheme named repeater jamming, which is based upon radio frequency memory (RFM). The jamming effect of repeater jamming on victim receiver´s code acquisition and the bit error probabilities are obtained. Moreover, the feasibility of the repeater jamming in practical communications is discussed. The results of simulation show the deduction is right. The repeater jamming proposed in this paper is a kind of correlative jamming types which are more effective than current jamming types, and it can be used to enhance distributed networked jamming systems in the field of DSSS communication countermeasures besides the commercial frequency surveillance.