Threshold detection - PowerPoint PPT Presentation

Cryptography and Network Security Chapter 18

Cryptography and Network Security Chapter 18. Fourth Edition by William Stallings . Chapter 18 – Intruders.

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B t =3000hz R=0.25 R b =? R b =(2/1+r)B t R b = (2/1+0.25)3000=6000/1.25 pulse/sec

.Compare bipolar and ON-OFF line codes in terms of spectrum efficiency, transperancy , error detection and timing. · Determine the pulse transmission rate if the transmission bandwidth is 3000Hz and the roll-off factor used for Nyquist criterion is 25%. B t =3000hz R=0.25 R b =?

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B=3000hz R&gt;=2B sample /sec R&gt;=3000*2=6000 sample /sec Sample rate R=6000(1.25)=7500 sample /sec

.Compare bipolar and ON-OFF line codes in terms of spectrum efficiency, transperancy, error detection and timing. · Determine the pulse transmission rate if the transmission bandwidth is 3000Hz and the roll-off factor used for Nyquist criterion is 25%. B=3000hz R&gt;=2B sample /sec

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207 views • 3 slides

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Threshold detection - PowerPoint PPT Presentation

Cryptography and Network Security Chapter 18

B t =3000hz R=0.25 R b =? R b =(2/1+r)*B t R b = (2/1+0.25)*3000=6000/1.25 pulse/sec

B=3000hz R&amp;gt;=2B sample /sec R&amp;gt;=3000*2=6000 sample /sec Sample rate R=6000(1.25)=7500 sample /sec

B t =3000hz R=0.25 R b =? R b =(2/1+r)B t R b = (2/1+0.25)3000=6000/1.25 pulse/sec

B=3000hz R>=2B sample /sec R>=3000*2=6000 sample /sec Sample rate R=6000(1.25)=7500 sample /sec