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SQNR

GATE Electronics & Communication · Digital Modulation · 1987-2024

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2024 PYQ

Let $X(t) = A\cos(2\pi f_0 t+\theta)$ be a random process, where amplitude $A$ and phase $\theta$ are independent of each other, and are uniformly distributed in the intervals $[-2...

mediumbasic explanation
2021 PYQ

A message signal having peak-to-peak value of 2 V , root mean square value of 0.1 V and bandwidth of 5 kHz is sampled and fed to a pulse code modulation (PCM) system that uses a un...

mediumbasic explanation
2017 PYQ

A sinusoidal message signal is converted to a PCM signal using a uniform quantizer. The required signal to quantization noise ratio (SQNR) at the output of the quantizer is 40dB. T...

easy
2015 PYQ

A sinusoidal signal of amplitude A is quantized by a uniform quantizer. Assume that the signal utilizes all the representation levels of the quantizer. If the signal to quantizatio...

medium
2009 PYQ

The amplitude of random signal is uniformly distributed between $$-$$5V and 5V If the signal to quantization noise ratio required in uniformly quantizing the signals is 43.5 dB, th...

mediumanswer key
2009 PYQ

The amplitude of random signal is uniformly distributed between $$-$$5V and 5V If the positive values of the signal are uniformly quantized with a step size of 0.05 V, and the nega...

mediumanswer key
2004 PYQ

In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor

easyanswer key
1996 PYQ

The number of bits in a binary PCM system is increased from n to n+1. As a result, the signal to quantization noise ratio will improve by a factor

easyanswer key
1995 PYQ

The signal to quantization noise ratio in an n-bit PCM system

easyanswer key
1995 PYQ

If the number of bits per sample in a PCM system is increased from n to n+1, the improvement in signal-to-quantization noise ratio will be

easyanswer key
1989 PYQ

A signal of bandwidth 3.5 kHz has peak-to-peak and rms amplitudes of 4 V and 0.2 V, respectively. This signal is passed through a linear PCM coder and then transmitted over a chann...

medium
1988 PYQ

A signal having uniformly distributed amplitude in the interval ( -V, +V ) is to be encoded using PCM with uniform quantization. The signal - to - quantizing noise ratio is determi...

easyanswer key
1987 PYQ

Companding in PCM systems leads to improved signal - to - quantization noise ratio. This improvement is for

easyanswer key