Topic: Communication Systems
A signal $m(t)=3cos(6000\pi t)+4cos(7000\pi t) + 5cos (10000\pi t)$ to be sampled. What is the minimum sampling rate for band pass sampling for truth full representation?
- A. 2000 Hz
- B. 3000 Hz
- C. 5000 Hz
- D. 10000 Hz
Answer: D. 10000 Hz
Explanation: $m(t)=3~cos(6000\pi t)+4~cos(7000\pi t) + 5~cos(10000\pi t)$. Minimum sampling rate $= 2~max(f_{m1}, f_{m2}, f_{m3}) = 2\times(5000) = 10000~Hz$.