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For the number of bits, k=1 and number of symbols, M=2 the system is called as

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For the number of bits, k=1 and number of symbols, M=2 the system is called as

(a) Unary

(b) Binary

(c) Quarternary

(d) None of the mentioned

I got this question in an interview for internship.

Asked question is from Baseband Systems and Signal Transmission through Linear Systems topic in portion Signals and Spectra of Digital Communications

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Right answer is (b) Binary

The explanation is: For k number of bits, the number of symbols are M=2^k. For k=1 and M=2 the system is called as binary coding.

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