Pré-Publication, Document De Travail Année : 2021

DS-CDMA/CI Based Communication Technique for Underwater Unmanned Vehicles

Résumé

An increasing demand to explore the vast ocean floor for various purposes has made it necessary to deploy networks of underwater unmanned vehicles (UUVs) capable of carrying out multiple tasks. For information transfer among these vehicles, it is essential to design efficient communication systems and techniques which reduce the transmission error thereby improving system performance. The network consists of underwater components which perform activities such as communicating with each other using sound waves, gathering information and transmitting this information to the surface buoys which forward the data to a receiver onshore or on board some ship. This report studies the use of Carrier Interferometry (CI) spreading codes in underwater networks which use DS-CDMA technique for transmitting data. A network model has been presented and performance of DS-CDMA/CI has been studied for this model through simulations. The performance of this system has also been compared to those networks using Walsh-Hadamard (WH) codes to prove that DS-CDMA/CI is a better transmission scheme as compared to DS-CDMA/WH. Furthermore, multirate transmission in underwater environment has also been explored with the use of DS-CDMA/CI simulations. The results have shown that DS-CDMA/CI is an excellent candidate for future single rate as well as multirate transmission schemes.

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Dates et versions

hal-03318430 , version 1 (10-08-2021)

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Identifiants

  • HAL Id : hal-03318430 , version 1

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Peshal Nayak. DS-CDMA/CI Based Communication Technique for Underwater Unmanned Vehicles. 2021. ⟨hal-03318430⟩
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