Digital Communication - Study Mode
[#141] A comparison of frequency division and time division multiplexing system shows that
Correct Answer
(C) FDM requires channel synchronization, while TDM has greater noise immunity
[#142] The minimum step-size required for a Delta-Modulator operating at 32 k samples/sec to signal (here u(t) is the unit-step function) x(t) = 125t(u(t) - u(t - 1)) + (250 - 125t)(u(t - 1) - u(t - 2)) so that slope-overload is avoided, would be
Correct Answer
(B) 2 -8
[#143] Which of the following use syndrome decoding?
Correct Answer
(A) Block codes
[#144] The advantage of differential PSK (DPSK) over coherent PSK is
Correct Answer
(B) DPSK receiver design is simple compared to coherent PSK
[#145] In an ADM transmission system, the output signal amplitudes for 1's and 0's are
Correct Answer
(D) variable but the repetition rate is fixed