Shannon Capacity: C = B log₂(1 + S/N)

Explore how bandwidth B and SNR jointly determine channel capacity. See where real modulation schemes operate relative to the theoretical limit.

10 dB
20 MHz
10.0
SNR (dB)
20
Bandwidth (MHz)
66.4
Capacity (Mbps)
BPSK (~1 b/s/Hz) QPSK (~2 b/s/Hz) 16-QAM (~4 b/s/Hz) 64-QAM (~6 b/s/Hz) 256-QAM (~8 b/s/Hz)