Data Rate Calculator
DR v1.0
20 MHz
0.1
5
20
40
100
200
16-QAM
4.0
0.5
2
4
6
8
10
3/4
0.75
0.1
0.5
0.75
1.0
25 dB
0
10
20
30
40
50
Data Rate
120.0 Mbps
Spectral Efficiency
6.00 bps/Hz
Shannon Limit
166.4 Mbps
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Data Rate Analysis
0
25%
50%
75%
100%
Achieved:
120.0 Mbps
Theoretical:
120.0 Mbps
Modulation
16-QAM
Symbol Rate
20.0 MBaud
Coding Rate
0.75
Efficiency
6.00 bps/Hz
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Modulation Reference
Modulation
Bits/Symbol
Min SNR
BPSK
1
~ 5 dB
QPSK
2
~ 8 dB
16-QAM
4
~ 15 dB
64-QAM
6
~ 22 dB
256-QAM
8
~ 28 dB
📐
Formula
Data Rate = Bandwidth × Bits/Symbol × Coding Rate
Bits/Symbol = log₂(M) where M is modulation order
Spectral Efficiency = Bits/Symbol × Coding Rate
Shannon Limit = B × log₂(1 + SNR)
Shannon-Hartley theorem defines theoretical maximum
📋
Data Rate Guide
- 1 Set available bandwidth in MHz
- 2 Choose modulation scheme
- 3 Select coding rate for FEC
- 4 Enter SNR for Shannon limit
- 5 Calculate achievable data rate