Bandwidth

At what bandwidth does BPSK become totally unreliable? [duplicate]

At what bandwidth does BPSK become totally unreliable? [duplicate]
  1. What is the maximum bandwidth required for BPSK?
  2. What is the minimum bandwidth required for BPSK?
  3. What is the bandwidth of BFSK?

What is the maximum bandwidth required for BPSK?

Ans. Maximum bandwidth Bmax = 2 fb Hz.

What is the minimum bandwidth required for BPSK?

Bandwidth of BPSK:

Thus the minimum bandwidth of BPSK signal is equal to twice the highest frequency contained in the baseband signal.

What is the bandwidth of BFSK?

BFSK (cont'd)

The minimum carrier separation is Δf = 0.5/Tb → the bandwidth of BFSK is well approximated by B ≈ 2Δf = 1/Tb.

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