1. .Compare bipolar and ON-OFF line codes in terms of spectrum efficiency, transperancy, error detection and timing

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

3. · If a peak pulse amplitude A p=2 milli-volt and the channel noise rms value = 192.3 micro-volt. If threshold detection is used and 1 and 0 are equally likely. Find the detection error probability for : Polar signaling On-Off Bipolar