ALLOCATED COMMUNICATION CHANNELS (SPN.SCPC) - Description of services
Isatel company takes following requirements into account while organizing of trunk satellite channels (SCPC):
RELIABILITY REQUIREMENTS
Possibility of redundancy schemes construction 1:1
At channel level – redundancy of transmitter-receiver
At network level – satellite modem redundancy /router standby
“Last miles” redundancy, dynamic switching to redundant “last mile" in emergency
LOW PRICE OF SATELLITE FREQUENCY AND ENERGY RESOURCE WITHIN C-BAND AND KU-BAND RANGES
Order of frequency and energy satellite resource with Intersputnik International Organization of Space Communications
Detailed preliminary calculation of line energy
HIGH EFFEICIENCY OF FREQUENCY AND ENERGY RESOURSE USE
Use of equipment with applications
CnC mode
use of high efficiency methods of modulation and coding (8-PSK, 16-QAM, LDPC&BCH)
use of geostationary spacecraft with high energy performance
WEAK DEPENDENCE ON WEATHER CONDITIONS
ACM mode – adaptive code modulation
Channel speed can be changed dynamically depending on receive levels – the primary purpose is “to hold” the channel when weather conditions are deteriorated even by way of the temporary capacity reduction (FEC dynamic change)
CHANNEL CAPACITY SCALING IN THE CASE OF PEAK LOADING IN BUSY HOURS