Search results for "S2C"
showing 2 items of 2 documents
Robust Communications for the Underwater Internet of Things
2023
In recent years, the emergence of numerous applications and activities involving the underwater world have given rise to a new class of technologies that takes the name of Internet of Underwater Things (IoUT). Submarine activities such as remote control, pollution monitoring, data collection, disaster detection or even early warning and assisted navigation are just some of the main applications that require the use of underwater communication systems capable of providing connectivity between static and mobile nodes deployed at different depths. Generally, underwater communications employ audio signals which can propagate relatively far but are also significantly affected by Doppler distorti…
Performance Analysis of Sweep-Spread Carrier (S2C) Modulation for Underwater Communications
2022
In the last decades, underwater acoustic communications have seen a growing development with a variety of research as well as commercial applications, dealing with channel distortions, multipath and Doppler effects typical underwater channels. A very robust modulation able to guarantee connectivity in harsh environments (where spectral efficient solutions such as OFDM can be prevented) is the so called sweep-spread carrier (S2C) modulation, which is based on the usage of a linearly time-varying carrier. Underwater modems based on S2C modulations have been patented and successfully adopted in real-world deployments. In this paper, we analyze the performance of S2C both in simulation and infi…