Discussion
Phase shift keying (PSK.) method is used to modulate digital signals at 9600 bps using 16 levels. The line signals speed (i.e. modulation rate) will be
Answer: A
Correct answer: 2400 bands
Sixteen levels carry \( \log_{2}16 = 4 \) bits per symbol, so
\[ \text{baud} = \frac{9600}{4} = 2400 \]
The baud rate is the symbol rate; it equals the bit rate only when each symbol carries one bit.
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