Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 6 (Q.No. 16)
16.
A sinusoidal signal with peak to peak amplitude of 1.536 volt is quantized into 128 levels using a mid-rise uniform quantizer. The quantization noise power is
0.768 V
48 x 10-6 V
12 x 10-6 V
3.072 Volt
Answer: Option
Explanation:

.

Discussion:
6 comments Page 1 of 1.

Bhavz said:   5 years ago
Why not Option B?

Kolii said:   7 years ago
Why was it divided by 12?

Shadan said:   8 years ago
Here, Δ = mp/L (Because peak to peak say).

So Δ =1.536/128 = 0.012

So Now,
Quantization noise power = 0.012*0.012/12.
= 12*10 to the power -6.

Rajashekar said:   8 years ago
Answer is 1mV correct.

Sandy said:   8 years ago
NO C is the correct answer.
= 1.536/128,
= 0.012.

Now, squre of step size= 1.44 * 10^-4.
So, quantization noise power = 1.44^-4/12 and ans is= 12 * 10^-6.

Sush said:   8 years ago
I think the answer is option B.

Post your comments here:

Your comments will be displayed after verification.