Abstract
In third generation mobile systems the integration of satellite systems with cellular networks will permit to provide wider and more efficient area coverage. Code Division Multiple Access (CDMA) is one of the two candidate access techniques for third generation mobile systems. This paper presents a satellite system for personal communication services, based on the asynchronous CDMA technique, suitable for the integration with the terrestrial cellular network. The paper highlights the network facilities offered by the asynchronous CDMA technique and shows how such facilities can be efficiently exploited in a very simple spot-beam transparent geo-stationary satellite system. The presented issues are fully compatible with the European Mobile System (EMS) payload and the L-band Land Mobile (LLM) payload.
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