TABLE 2

Downlink calculation of PPP-B2b

ItemsValues
Maximum ERIP of PPP-B2b (dBW)    28.4
Spatial transmission loss of L-band (dB)–186.4
Antenna polarization and pointing loss (dB)   –1.5
Ground received signal power (dBW)–159.5
Broadcast data rate (bps)  500
C/N0 threshold with BER less than 10−6 (dBHz)    37.6
Designed coding gain (dB)      7.5
A/D conversion and baseband processing loss (dB)      2
VehicleGeodeticHand-heldPortable
Typical G/T of revivers (dB/K)–30.7–32.7–32.7–33.9
Effective C/N0 (dB-Hz)  38.3  36.3  36.3  35.1
Demodulation margin (dB)    6.3    4.3    4.3    3.1