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THE FEUTEX TOOLKIT

Raised-Cosine Symbol Bandwidth

Estimate Nyquist-shaped RF bandwidth and spectral efficiency.

Communications workspace● Runs in your browser
01 Your input
02 Your result
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FormulaB=Rs(1+α); Rb=Rs log₂(M) Rc
Sources and model references

Worked example

Inputs

Symbol rate
1000000 symbols/s
Bits per symbol
4
Raised-cosine roll-off
0.25
Code rate
0.75

Expected results

RF occupied bandwidth
1250000 Hz
Payload bit rate
3000000 bit/s
Payload spectral efficiency
2.4 bit/s/Hz

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "baud": 1000000,
  "bits": 4,
  "alpha": 0.25,
  "code": 0.75
}

Accuracy and scope

Ideal raised-cosine shaping; no pilots, framing, distortion or spectrum-mask margin. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.