Communications ...

The Nyquist sampling rate for the signal g(t) = 10 cos (50πt) cos² (150πt) where ‘t’ is in second, is ______ samples per second.

A binary channel with capacity 36 kbit/sec is available for PCM voice transmission. If the signal is band-limited to 3.2 kHz, then the appropriate values of quantizing level and the sampling frequency will be, respectively

A singer’s performance is to be recorded by sampling and storing the sample values. If it is sampled at a rate 10% higher than the Nyquist rate and each sample is quantized into 126 levels, how many binary digits (bits) would be required to store a three minutes performance?

Assume that the highest frequency tone to be recorded is 15800 Hz.

Two ideal quantizers A and B have the following specifications:

A: 5-bit quantizer with input dynamic range of -1V to + 1V with Q₁ as quantization noise power

B: 8-bit quantizer with input dynamic range of -0.5 V to + 0.5 with Q₂ as quantization noise power.

A signal 2 sin² (100 πt) + 3cos² (100 πt) is sampled at twice the Nyquist Rate. The samples are then quantized with step size of 0.5 v. The minimum data rate required in bits/ second is____.