Research Projects

The increasing proliferation of communication devices along with the demand for higher data rates has resulted in spectrum crunch. As a result, it is inevitable that satellite and terrestrial systems share frequencies in adjacent band or co-frequency mode. Recently, several satellite bands are being considered for use for terrestrial mobile networks in sharing/adjacent frequency mode. Unconstrained (or uncoordinated) widespread deployment of such networks would cause harmful interference to the incumbent satellite systems and possibly even to the terrestrial systems. With appropriate techniques, it would also be possible to integrate these services. This project aims to identify and model the characteristics of the interference channel between these two systems followed by modeling and simulation of deployment of both networks in adjacent and co-frequency sharing modes. Subsequently, physical layer and network techniques would be identified and proposed for coexistence of both services with minimal constraints and performance degradation. It is also aimed to identify possible techniques for integration of satellite and terrestrial systems.

The project being undertaken by ISRO in collaboration with academia is directly or indirectly beneficial to the society.