3- Calculate the maximum sampling frequency to obtain five samples in the logic one of information signal of 0.2msec pulse duration and 1KHz pulse repetition frequency. 4- If the input signal is 100KHz, can we make sampling for this signal when it applied to the analog input port of Arduino, explain?

Exampic Bandwidth of the input to pulse code modulator is restricted to 4 kHz. The input varies from -3.8V to 3.8 V and has the average power of 30 mW, the required signal to quantization noise power ratio is 20 dB. The modulator produces binary output. Assume uniform quantization Calculate the number of bits required per sample.

2a. Assume a digital to analog conversion system uses a 10-bit integerto represent an analog temperature over a range of -25oF to 125oIf the actual temperature being read was 65.325oF, what would bethe closest possible value that the system could represent?   2b. What is the minimum sampling rate needed in order to successfullycapture frequencies up to 155 KHz in an analog signal?

question in photo plz

1. a) An analog signal contains frequencies up to 12 kHz. (i) What range of sampling frequencies dose allow exact reconstruction of this signal from its samples? (ii) Suppose that we sample this signal with a sampling frequency Fs = 9 kHz. Examine with proper diagram what happens to the frequency component F1 = 6 kHz after passing through the digital to analog converter. (iii) Repeat part (ii) for a frequency component F2 = 11 kHz. b) Why is it necessary to introduce an analog low-pass filter before analog to digital converter? Illustrate the fact with necessary diagram.

This question from Digital Communication 1 Course.

Choose the correct answer: 1. In AM, the over modulation scenario occurs when the amplitude of the modulating signal is the amplitude of the carrier signal. (equal to, less than, greater than, not related). 2. The noise signal can be studied in time and frequency domains). (only time domain, only frequency domain, both 3. The diode in the envelope detector circuit is wave rectifier). (clipper, clamper, half wave rectifier, full the output SNR. (half, equal to, twice, not related). 4. In DSB-SC, the input SNR is 5. In cascaded systems, the total transfer function is the functions. (sum, subtraction, multiplication, division). of individual systems' transfer

1. Suppose that you have a 12-bit, successive approximation register (SAR) A/D converter with a total conversion time of 100 microseconds (including sampling time). a). What is the maximum frequency of an analog signal that it can capture? b). Suppose that the converter can convert an input voltage over the range of 0 to +3.3V, what is the minimum voltage change that should be measurable by this converter? c). What is the quantization error of the ADC?

) If the analog signal has amplitudes that varies between-3 and 3 volts And maximum frequency of 10 KHz, and it is samples with 3 bits quantizer as shown in the figure. St (a) Calculate the quantization levels and the optimum sampling timings. (b) Show in the graph the values on the vertical axis for both the analog values and the assigned bits. (c) Show the sampling times on horizontal axis. n

5. A signal is expected to have a frequency of fm 1000 Hz. (a) (b) (c) signal? What minimum sampling frequency is required in order to accurately measure this What frequencies would be experimentally observed if the signal were sampled at 1500 Hz? Show the folding diagram and label it up to 4500 Hz. At what frequency would the signal, fm 1000 Hz, be observed as if sampling at 1500 Hz? Also list and show on the folding diagram, the lowest four frequencies that would be aliased and also observed at the same alias frequency as the expected signal.