Digital Communication - Study Mode
[#171] The bit rate of a digital communication system is 16 Mbps. The modulation scheme is QPSK. The baud rate of the system is:
Correct Answer
(B) 32 Mbps
[#172] Which one of the following can be used for the detection of the non coherent BFSK signal?
Correct Answer
(B) Phase-locked loop
[#173] The anti-aliasing filter has a higher cut-off frequency f m . Its output is sampled periodically every T s seconds. For proper recovery of the signal at the receiver, T s must be
Correct Answer
(B) $${T_s} leqslant frac{1}{{2{f_m}}}$$
[#174] For QPSK
Correct Answer
(D) More-inter symbols interference compared to MSK
[#175] In 512 QAM, the number of signal vectors of the signal constellation is:
Correct Answer
(C) 512