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Effect of CW and pulse jamming on direct-sequence spread-spectrum code acquisition using a sequential detector

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2 Author(s)
Ravi, K.V. ; Sch. of Electron. & Electr. Eng., Bath Univ., UK ; Ormondroyd, R.F.

The authors use a Monte-Carlo computer simulation to examine the effect of continuous-wave (CW) and pulse jamming, in the presence of additive Gaussian noise, on the acquisition performance of a noncoherent serial-search pseudonoise code synchronizer. The acquisition performances of three variants of the sequential detector, namely, the quantized log-likelihood detector, the biased square-law detector, and the ideal log-likelihood detector, are compared, and the degradation in performance is assessed. It is shown that, in the presence of Gaussian noise, the pulse jammer with a properly chosen duty factor can significantly degrade the acquisition performance compared to the CW jammer. Further, the pulsed jammer with a duty factor approaches 1.0 behaves similarly to the CW jammer at values of jammer-to-signal (J/S) less than 5 dB

Published in:

Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE

Date of Conference:

11-14 Oct 1992

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