1. Equalization in digital communication
2. Which is the most important subsystem for recovering and reconstructing signals in a TDM system?
3. For any 4-ary FSK, the signal set is given by $${s_k}\left( t \right) = \sqrt {\frac{{2E}}{T}} \cos \left[ {\frac{\pi }{4}\left( {n + k} \right)t} \right];\,0 \leqslant t \leqslant T\,\,k = 1,\,2,\,3,\,4$$
The dimension of its signal space is
The dimension of its signal space is
4. In flat-top sampling, a hold circuit is sometimes required. This hold circuit can be designed as a sampler followed by
5. What is the sampling rate of a signal when it is sampled at every 0.001 sec?
6. 500 Bytes of data needs to be transmitted from an UART every 100 ms. What should be the minimum transmission baud rate of UART, assuming 1 start bit, 8 data bits and 2 stop bits?
7. In PCM, the biggest disadvantage as compared to AM is
8. The spectral range of a band pass signal extends from 10 MHz to 10.4 MHz. What is the minimum sampling frequency required for reconstruction?
9. Which of the following pulse modulation is analog?
10. In which one of the following techniques, RF binary signals are transmitted as given?
0 : $$\sqrt 2 $$ p'(t)cos[ωC - (∆ω/2)]t
1 : $$\sqrt 2 $$ p'(t)cos[ωC + (∆ω/2)]t
0 : $$\sqrt 2 $$ p'(t)cos[ωC - (∆ω/2)]t
1 : $$\sqrt 2 $$ p'(t)cos[ωC + (∆ω/2)]t
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