Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 2 (Q.No. 9)
9.
If transmission bandwidth is doubled in FM, SNR is
doubled
raised four times
decreased four times
halved
Answer: Option
Explanation:

SNR changes in the ratio of square of change in bandwidth.

Discussion:
18 comments Page 2 of 2.

Ayush kumar said:   8 years ago
Answer will be B because SNR is directly proportional to square of the bandwidth.

Asif said:   8 years ago
Yes, increasing deviation improve noise performance.

Eng.mohammed said:   8 years ago
Yes, the answer should be B. Because B.W is doubled SNR increase 4 time.

Swastik Sahoo said:   9 years ago
SNR in FM is :- 3/2 (mf)^2.
Modulation index is directly proportional to BW.
So, as BW is doubled, SNR will increase 4 times.

Pankaj said:   9 years ago
@Nikunj please explain with formulae.

SWETHA said:   9 years ago
Yes, I too agree the answer should be B.

Devendra said:   9 years ago
Yes, the answer should be B.

Vishu gupta said:   9 years ago
Yes, the answer should be B.


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