Bit Error Rate

• BER at target system above MAC

• Up- & Down-Link

  • Good weather condition: 2*10E-8
  • Rain
    • causes link to collaps
    • last for approx. 10 minutes
  • “on-off” modell

• ISLs

• Limitations

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BER
above FEC on MAC level

assume worst case: const. max. BER (target system budget)

Good wheather
packet error rate (=ATM cell): 2*10e-8

Rain
rain > 2.5 m/h causes link to fail

if rain, probability extremely hight that it exceeds 2.5 mm/h

ISLs
currently not considdered

exact parameters to be discussed when ISLs included into simulation

Limitations / in reality:
BER changes continiously with, e.g., slant range

not an a abrupt on-off-model but rather smooth transition
FEC will not switch to „double-slot“ usage for better error correction