Compute SQNR (Signal to Quantization Noise Ratio)

1. How do you calculate signal to quantization noise ratio?
2. What is the formula for signal to quantization noise ratio of a PCM?
3. Is SNR and SQNR same?
4. What is the value of SQNR for 16 level quantizer?

How do you calculate signal to quantization noise ratio?

Defined as normalized signal power divided by normalized quantization noise power. The SQNR in dB is approximately equal to 6 times the number of bits of the analog-to-digital converter (ADC). For example, the maximum SQNR for 16 bits is approximately 96dB.

What is the formula for signal to quantization noise ratio of a PCM?

SNRQ=(4.8+6N)dB. (

In PCM the SNR thus increases in proportion to the number of quantisation levels while the bandwidth or bit rate increases in proportion to the logarithm of the number of quantisation levels.

Is SNR and SQNR same?

The SQNR reflects the relationship between the maximum nominal signal strength and the quantization error (also known as quantization noise) introduced in the analog-to-digital conversion. The SQNR formula is derived from the general signal-to-noise ratio (SNR) formula: where: is the probability of received bit error.

What is the value of SQNR for 16 level quantizer?

Uniform quantization and the 6 dB/bit approximation

=65536 and SQNR = 16×6 = 96 dB.