We investigate the performance of free-space optical communication systems in the presence of atmospheric turbulence with the purpose of assessing the advantages that a coherent communication system can bring with respect to a conventional intensity modulation/direct detection system. The perspective is an information theoretic one, hence we evaluate the mutual information and the corresponding outage probability of both channels, with traditional symbol constellations, as a pragmatic approximation to the capacity, or to the outage capacity, of those channels. In addition, we analyze non-uniform symbol constellations, in order to evaluate the possible shaping gain that can be achieved under different channel conditions.

Coherent vs IM/DD Transmissions for FSO Communications in the Presence of Atmospheric Turbulence / Colavolpe, G.; Foggi, T.; Matuz, B.; Vannucci, A.; Zahr, A.. - (2023), pp. 83-88. (Intervento presentato al convegno 28th European Wireless Conference, EW 2023 tenutosi a ita nel 2023).

Coherent vs IM/DD Transmissions for FSO Communications in the Presence of Atmospheric Turbulence

Colavolpe G.;Foggi T.;Vannucci A.;Zahr A.
2023-01-01

Abstract

We investigate the performance of free-space optical communication systems in the presence of atmospheric turbulence with the purpose of assessing the advantages that a coherent communication system can bring with respect to a conventional intensity modulation/direct detection system. The perspective is an information theoretic one, hence we evaluate the mutual information and the corresponding outage probability of both channels, with traditional symbol constellations, as a pragmatic approximation to the capacity, or to the outage capacity, of those channels. In addition, we analyze non-uniform symbol constellations, in order to evaluate the possible shaping gain that can be achieved under different channel conditions.
2023
978-3-8007-6225-5
Coherent vs IM/DD Transmissions for FSO Communications in the Presence of Atmospheric Turbulence / Colavolpe, G.; Foggi, T.; Matuz, B.; Vannucci, A.; Zahr, A.. - (2023), pp. 83-88. (Intervento presentato al convegno 28th European Wireless Conference, EW 2023 tenutosi a ita nel 2023).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2993874
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