51. To reduce the distortion, which one of the following can be used?
52. Consider minimum shift keying (MSK) also known as fast with frequency spacing 2fd between the state frequencies. rb is the data rate. Which one of the following correctly relates rb and fd?
53. In delta modulation, the quantizer is a
54. . . . . . . . . step is NOT involved in pulse code modulation system.
55. Figure shows a block diagram of a system to recover a sampled signal shown as input.
Blocks A and B can be respectively
Blocks A and B can be respectively
56. Roll - off factor is defined as
57. A ramp signal m(t) = at is applied to a delta modulator with sampling period TS and step size d. Slope overload distortion would occur if
58. At a given probability of error, binary coherent FSK is inferior to binary coherent PSK by
59. A continuous signal has voltage range of -4 V to +2 V. If this is quantized to 8 bits, then the step size of the quantizer will be:
60. Four voice signals, each limited to 4 kHz and sampled at Nyquist rate, are converted into binary PCM signal using 256 quantization levels. The bit transmission rate for the timedivision multiplexed signal will be
Read More Section(Digital Communication)
Each Section contains maximum 100 MCQs question on Digital Communication. To get more questions visit other sections.