DTU Satellite Systems and Design Course CubeSat Communication
DTU Satellite Systems and Design Course CubeSat Communication
DTU Satellite Systems and Design Course CubeSat Communication
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Danish Space Research Institute<br />
Danish Small <strong>Satellite</strong> Programme<br />
Digital <strong>Communication</strong> - 7<br />
Bit Error Probability<br />
To be able to assess the quality of our radio link<br />
a relation between E b /N 0 <strong>and</strong> the error rate of the<br />
received bits must be established. The bit error<br />
rate must be low, but at a reasonable cost only.<br />
The graph marked PSK is a plot of the function<br />
P e<br />
:=<br />
1<br />
2 erfc ⋅<br />
⎛<br />
⎜<br />
⎜<br />
⎝<br />
E b<br />
N o<br />
where Pe is the bit error probability <strong>and</strong> erfc() is<br />
the error function complement, a st<strong>and</strong>ard<br />
function in probability theory.<br />
The curve marked VD is the bit error probability<br />
using forward error correction (FEC) encoding.<br />
FH 2001-08-27 Cubesat_<strong>Communication</strong>.ppt<br />
⎞<br />
⎠<br />
Slide # 23
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