Digital Communication - Study Mode
[#76] BPSK stands for
Correct Answer
(C) binary phase shifting key
[#77] Companding is used in PCM to
Correct Answer
(D) Get almost uniform S/N ratio
[#78] For atmost distortionless reception of signal in pulse modulation it is required that the speed should be:
Correct Answer
(C) Equal to twice the signal frequency
[#79] Which of the following statements about the matched filter in a communication receiver are correct? 1. Its impulse response depends on the signal shape 2. It maximizes the SNR at the detection instant 3. It produces ISI 4. It may produce phase error if synchronization is improper Select the correct answer from the options given below:
Correct Answer
(B) 1 and 2 only
[#80] Which one of the following statements is not correct regarding the features of CDMA?
Correct Answer
(A) Multipath fading may be substantially increased because the signal is spread over a large spectrum