Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 1 (Q.No. 3)
3.
A certain 8 bit uniform quantization PCM system can accommodate a signal ranging from - 1 V to + V. The rms value of the signal is 
V . The signal to quantization noise ratio is:
V . The signal to quantization noise ratio is:Answer: Option
Explanation:
(SNR)dB = 1.76 + 6.02n
n = 8
Thus (SNR)dB = 1.76 + 6.02 x 8 = 49.92 dB.
Discussion:
18 comments Page 1 of 2.
Kaveri Ammu said:
2 years ago
(SNR) db = 10 log 1.5 + 2 n*10 log 2.
Log1.5 value = 0.176,
Log 2 value = 0 3010,
N= 8.
10 * 0.176 + 2*8*0.3010* 10.
1.76 + 4.816*10,
1.76 + 48.16,
49.92 db.
Log1.5 value = 0.176,
Log 2 value = 0 3010,
N= 8.
10 * 0.176 + 2*8*0.3010* 10.
1.76 + 4.816*10,
1.76 + 48.16,
49.92 db.
(1)
Argha said:
3 years ago
Answer given is the wrong answer is option D.
Signal power is (1/2)^2=1/4 and noise power is 1^2/(3*2^16). Then after signal power /noise power expressed in dB answer will be 46.91approx.
Signal power is (1/2)^2=1/4 and noise power is 1^2/(3*2^16). Then after signal power /noise power expressed in dB answer will be 46.91approx.
Sowmya said:
4 years ago
How come 1.76+6.02?
Can anyone please solve this clearly?
Can anyone please solve this clearly?
Aditya. said:
4 years ago
Snr = 1.5 x 2^2n.
In db, snr (dB) = 10log 1.5 + 2n x 10log 2.
In db, snr (dB) = 10log 1.5 + 2n x 10log 2.
Pavan kumar said:
4 years ago
Not understanding this, could anyone explain more?
Viresh Madgundi said:
4 years ago
Why you apply 1.76+6.02?
Please give an explanation.
Please give an explanation.
Dimpu said:
5 years ago
I am not getting. Please explain it clearly.
Gayathri said:
5 years ago
Please anyone solve this problem.
Subham Subhrajeet Parida said:
5 years ago
Please explain this equation clearly.
Singamayum naeema said:
5 years ago
Please explain the answer clearly.
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