Optimization of demand assigned SCPC satellite networks
Abstract
This paper investigates various system aspects and price tradeoffs involved in providing cost-effective Demand Assignment (DA) satellite channel service. Those network characteristics which significantly affect the ultimate cost-based decision are discussed. The number of stations participating in the DA or PA system, the number of satellite channels, and the traffic are kept parametric within expected limits, covering most of the present and future applications. In particular, the interrelationships between the network requirements (e.g., grade of service) and network elements, and the impacts of different blocking assignment allocations on the number of modems in the network is examined. A cost model is then derived that allows the evaluation and comparison of both DA and PA networks. Absolute and differential costing of PA and DA networks is permitted using economic quantities available to the system planner. These include modem cost, satellite channel cost, network size, and defined efficiency factors. Based on the differential cost comparisons for several DA and PA network strategies, tradeoffs have been derived to aid the system designer in configuring the most cost-effective DA network.
- Publication:
-
Space Communication Broadcasting
- Pub Date:
- September 1985
- Bibcode:
- 1985SpCoB...3..201L
- Keywords:
-
- Cost Effectiveness;
- Demand Assignment Multiple Access;
- Intelsat Satellites;
- Optimization;
- Satellite Networks;
- Single Channel Per Carrier Transmission;
- Channels (Data Transmission);
- Transponders;
- Communications and Radar