No abstract

very often based on cunservative assmptions. ?his happens h u s e the lack of a detailed knowledge abut the several factors which influence interference is many t h s handled by considering wrst case conditions. If such factors are rrrdeled within a statistical frmwork, extra flexibility can be 7.2.1. CH2538-7/88/0000-0210 $1 .OO 0 1988 IEEE Interfez-ace Levels", Proceedings of the IEEE ICC'78,mm-A.Kadrichu, S.Prasama and R.Mukunda, "Stochastic EPaluation of Interference Aggregation in S a t e l l i t e Cmnmications", P m x e d h g s of the IIEZ IcC'87, Seattle,

No abstract

This paper describes how VSAT networks currently operate in the INTELSAT system. Four classes of VSAT networks (data transaction; circuit‐switched; data distribution; microterminals) are identified, and it is verified that all of them can operate with INTELSAT satellites. Most VSAT networks in operation on INTELSAT today operate in fractional transponder leases. Fractional transponder capacity estimates are presented for a wide range of scenarios and different INTELSAT satellite series. These estimates clearly show increasing bandwidth utilization efficiencies for newer generations of INTELSAT satellites. Provided that VSAT and hub sizes are appropriately selected, efficiencies are already significant with existing satellites. Two possible ways of increasing the utilization of satellite resources are examined in the paper: demand assignment multiple access (DAMA) and multiple channel‐per‐carrier (MCPC) techniques. The impact of using DAMA in circuit‐switched VSAT networks is quantified.