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THE FEUTEX TOOLKIT

OFDM Cyclic Prefix Efficiency

Quantify cyclic-prefix overhead and payload-symbol rate.

Communications workspace● Runs in your browser
01 Your input
02 Your result
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Formularate=fs Ndata bits codeRate/(Nfft+Ncp)
Sources and model references

Worked example

Inputs

FFT size
1024
Cyclic prefix samples
128
Sampling rate
10000000 Hz
Data subcarriers
600
Bits per data symbol
6
Code rate
0.75

Expected results

OFDM symbols per second
8680.555556 symbols/s
Prefix efficiency
0.8888888889 fraction
Coded payload rate
23437500 bit/s

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

{
  "fft": 1024,
  "cp": 128,
  "fs": 10000000,
  "active": 600,
  "bits": 6,
  "code": 0.75
}

Accuracy and scope

Generic numerology; excludes pilots beyond supplied data count, guard intervals, scheduling and MAC overhead. 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.