Limitations

  • Users cannot model buoy nodes, behaving as network sink(s) to collect data which can then be transmitted, via Radio Frequency (RF), to a nearby boat, or satellite

  • Link layer ACKs are not modeled in s-Aloha

  • There is no Guard time between slots in s-Aloha

  • Doppler shift on account of transmitter and/or receiver motion is not accounted

  • UWAN cannot connect to an “external” network; it operates stand alone.

  • All devices are assumed to be time synchronized.

  • Models for simulating multipath fading are not currently available.

References

[1] A. B. Coppens, "Simple equations for the speed of sound in Neptunian waters," 1981.

[2] H. U. Yidliz, V. C. Gungor and B. Talvi, "Packet Size Optimization for Lifetime Maximization in Underwater Acoustic Sensor Networks," IEEE Transactions on Industrial Informatics, 2019.

[3] M. Stojanovic and J. Preisig, "Underwater Acoustic Communication Channels: Propagation Models and Statistical Characterization," IEEE Communications Magazine, 2009.

[4] D. E. Lucani, M. Medard and M. Stojanovic, "Capacity Scaling Laws for Underwater Networks," 2012.

[5] M. Stojanovic, "On the Relationship Between Capacity and Distance in an Underwater Acoustic Communication Channel," in WUWNet, 2006.

[6] J. L. J. M. J. a. L. P. S. Sendra, "Underwater Acoustic Modems," Sensors journal, vol. 16, p. 11, 2016.

[7] [Online]. Available: https://www.l3harris.com/sites/default/files/2020-09/ims-maritime-datasheet-GPM%20300.pdf.

[8] R. J. Urick, "Principles of Underwater Sound, Peninsula Publishing," 1983.

[9] M. S. a. J. G. P. E. M. Sozer, "Design and Simulation of an Underwater Acoustic Local Area Network".