access icon free Performance of underwater optical wireless communication with multi-pulse pulse-position modulation receivers and spatial diversity

In this study, the performance of underwater optical wireless communication systems employing spatial diversity and multi-pulse position modulation techniques is assessed. The effects of inter-symbol interference, oceanic turbulence and receiver noise are taken into account. Oceanic turbulence is modelled by the log-normal distribution which is regarded as an appropriate model for weak turbulence conditions. For the system under consideration, approximate analytical expressions for the average bit error probability are deduced. The impact of the number of transmitting and receiving apertures, the achievable data rate and the water type on system performance is also investigated. Various numerical results are presented that demonstrate the proposed analysis.

Inspec keywords: pulse position modulation; optical receivers; free-space optical communication; underwater optical wireless communication; turbulence; optical transmitters; approximation theory; intersymbol interference; log normal distribution; error statistics

Other keywords: weak turbulence conditions; spatial diversity; oceanic turbulence; multipulse pulse-position modulation receivers; log-normal distribution; receiver noise; intersymbol interference; approximate analytical expressions; water type; data rate; transmitting apertures; average bit error probability; underwater optical wireless communication systems; receiving apertures

Subjects: Optical communication devices, equipment and systems; Modulation and coding methods; Electromagnetic compatibility and interference; Free-space optical links; Optical communication equipment

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