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Communication Systems

Q1:

A noiseless 3 kHz channel can't transmit binary bit at the rate

A 12000 bps

B 1000 bps

C 6000 bps

D 3000 bps

ANS:A - 12000 bps

Noiseless channel: Nyquist's Theorem - If the signal has V discrete levels over a transmission medium of bandwidth H, the maximum data rate = 2H log2 V bits/sec. A noiseless 3-kHz channel cannot transmit binary signals at a rate exceeding 6000 bps (= 2 x 3000 log2 2).



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