Table 2 Cognitive user link budget

Transmitted power (mW)

100*0.15

Satellite carrier EIRP (dBm)

20.1

Free space loss (dB)

−162.2

Depointing loss (dB)

−10

Ground station antenna max gain - 5m, eff 50% (dBi)

38.2

System noise temperature (K)

130

C (dBm)

−113.9

C/N0 (dB–Hz)

63.6

Demodulation losses (dB)

−6

Eb/N0 required (dB) – for BER = 1E-3

DPC 16-QAM

10

DPC 64-QAM

9.4

DPC 256-QAM

8.5

DPC 1024-QAM

5.9

Eb/N0 required (dB) – for BER = 1E-5

DPC 16-QAM

12.5

DPC 64-QAM

12.25

DPC 256-QAM

12

DPC 1024-QAM

11

Margin (dB)

3

Minimum Bit Rate (kbps) – DPC 16-QAM

BER = 1E-3

28.8

BER = 1E-5

16.2

Maximum bit rate (kbps) – DPC 1024-QAM

BER = 1E-3

74.1

BER = 1E-5

22.9

PAPR

DPC 16-QAM

5.0

DPC 64-QAM

4.67

DPC 256-QAM

4.79

DPC 1024-QAM

4.91