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33

5.3 Results

Figure 15 on the next page shows that the optimal jamming duty cycle is dependent on

the Eb/Nj of the transmitted signal. In Figure 15 on the next page the worst-case is approximated

by the think black line, which is the tangent to the curves of the various ρ values. By

recognizing the inverse linear relationship of the worst-case jamming line, it can be

approximated by trail and error. When this approximation method is applied to the worst-case

jamming to Figure 15 on the next page is the result:

(18)

  • /

0.083 (/ )

Notice that equation of the worst-case jamming line in equation (18) and theoretical line in

equation (17) are the same. Figure 15 also matches up with the DSSS figure in the previous

chapter. The effects of error propagation in the SESS explain the deviation from the worst case

jamming line when the SNR values are below 2.5 db.

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