A digital communication system, with a data rate of 105 bps is transmitted using QPSK modulation scheme. The theoretical minimum channel bandwidth required to transmit the modulated signal is equal to
A
40 kHz
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B
60 kHz
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C
50 kHz
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D
100 kHz
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Solution
The correct option is C 50 kHz ∴(BW)QPSK=Rblog2(4)⇒(BW)QPSK=50kHz