TABLE 14 Examples of 21 GHz band BSS parameters utilizing a locallyvariable e.i.r.p. system (The diameter of the boosted beam is 400 km and the information rate is about 40 Mbit/s) Link parameters Uplink + 24 dB C/(N I) 4 m Tx antenna diameter No. of feed horns 188 Dia. = 45 cm, = 70%, NF = 1.5 dB Receiving antenna Information bit rate About 40 Mbit/s Modulation QPSK1/2 TC8-PSK 16-QAM3/4 Required 4.4 dB 7.5 dB 10.7 dB 17.0 dB C/N Channel bandwidth (99%) 54.2 MHz 35.4 MHz 26.4 MHz 17.4 MHz Symbol rate 45.2 MBd 29.6 MBd 22 MBd 14.6 MBd Required pfd (dB(W/(m2 · MHz)))(1) Case 1 Service availability in a year by boosted 99.9% beam (Rain attenuation: dB total attenuation: dB) Boosted beam (–3 dB): 46.7 dBi Antenna gain Nationwide beam (min.): 38.0 dBi Total RF power (Fig. 27) e.i.r.p. nationwide e.i.r.p. boosted beam(–3 dB) Peak pfd (dB(W/(m2 · MHz))) Boosted beam pfd (dB(W/(m2 · MHz))) Nationwide beam pfd (dB(W/(m2 · MHz))) Case 2 Service availability in a year by boosted 99.7% beam (Rain attenuation: dB attenuation: dB)
TABLE 14 Examples of 21 GHz band BSS parameters utilizing a locallyvariable e.i.r.p. system (The diameter of the boosted beam is 400 km and the information rate is about 40 Mbit/s) Link parameters Uplink C/(N + I) 24 dB Tx antenna diameter 4 m No. of feed horns 188 Receiving antenna Dia. = 45 cm, = 70%, NF = 1.5 dB Information bit rate About 40 Mbit/s Modulation QPSK1/2 TC8-PSK 16-QAM3/4 Required C/N 4.4 dB 7.5 dB 10.7 dB 17.0 dB Channel bandwidth (99%) 54.2 MHz 35.4 MHz 26.4 MHz 17.4 MHz Symbol rate 45.2 MBd 29.6 MBd 22 MBd 14.6 MBd Required pfd (dB(W/(m2 · MHz)))(1) Case 1 Service availability in a year by boosted beam 99.9% (Rain attenuation: dB total attenuation: dB) Antenna gain Boosted beam (–3 dB): 46.7 dBi Nationwide beam (min.): 38.0 dBi Total RF power (Fig. 27) e.i.r.p. nationwide e.i.r.p. boosted beam(–3 dB) Peak pfd (dB(W/(m2 · MHz))) Boosted beam pfd (dB(W/(m2 · MHz))) Nationwide beam pfd (dB(W/(m2 · MHz))) Case 2 Service availability in a year by boosted beam 99.7% (Rain attenuation: dB attenuation: dB)
R07-WP4A-C-0368!N06!MSW-E.docx