Architecture of Frequency Division Multiple Access (FDMA) for Mobile Satellite Communication (MSC) Networks

Abstract

This paper describes in particular architecture of Frequency Division Multiple Access (FDMA)scheme applicable in Mobile Satellite Communication (MSC) networks. In satellite communication systems,as a rule, especially in MSC systems many Mobile Earth Stations (MES) users are active and communicate atthe same time via satellites and Land Earth Stations (LES) terminals. The problem of simultaneous two-waycommunications between many single or multipoint mobile satellite users can be solved by using MultipleAccess (MA) technique. Since the resources of the systems such as the transmitting power and the bandwidthare limited, it is advisable to use the channels with complete charge and to create a different MA to thechannel. This generates the problem of summating and separating the signals in the satellite transmission andreception parts, respectively. Therefore, deciding this problem consists in the development of orthogonalchannels of transmission in order to divide signals from various users unambiguously on the reception part.