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Underwater Acoustic Networks (UAN)


NetSim’s Underwater acoustic networks library enables users to design, simulate and analyze performance of underwater networks that use acoustic communication.



  • Architecture & Integration
    • Seamless integration with other NetSim components.
    • NetSim Component #12 is Underwater Acoustic Networks (UWAN).
    • Available with the standard and pro versions.
    • Dependency: Requires Component #2 (Legacy Networks) for operation.
    • Emulation capability available
  • Network Stack
    • Entire 5-layer TCP/IP network stack is modelled in each device
  • L5 - Application Layer
    • Offers a sensor application designed with small packet sizes and large inter-arrival times, suitable for underwater applications.
    • Supports other NetSim applications like voice, video, FTP, etc. Users should consider the very low bit rates typical of UWANs.
  • L4 - Transport layer
    • Implements the UDP protocol.
  • L3 - Network layer
    • Single-hop transmissions require no routing configuration.
    • For multi-hop transmissions, static routing configuration is necessary.
    • Ad hoc (MANET) routing is on the roadmap for future releases.
    • Devices can currently communicate only within the UWAN. External connectivity via a gateway is under development for future releases.
  • L2 - MAC layer
    • Uses the Slotted Aloha protocol.
    • TDMA/DTDMA protocols are planned for future updates.
  • L1 - PHY Layer
    • Features the Underwater Acoustic PHY Model.
    • Considers propagation delay based on the speed of sound influenced by water temperature, depth, and salinity.
    • Supports modulation schemes: BPSK, QPSK, FSK, 16-QAM, 32-QAM, and 64-QAM.
    • Allows user-configurable data rates and bandwidth.
    • Utilizes SNR for packet reception, calculating BER from SNR-BER curves after factoring in propagation losses.
    • Implements the Thorp Propagation Model, allowing users to configure parameters such as temperature, depth, salinity, surface wind speed, turbulence, and shipping noise.
  • Typical simulation parameters
    • Source Level: 170-225 dB//1 𝜇𝑃a
    • Antenna Gain
    • Forward error correction coding
    • Coding Rates: 1/2, 2/3,3/4,5/6
    • Frequency: 0.01 to 1000kHz
    • Data Rate upto 255 kbps
    • Min Receiver Sensitivity -120 dB//1 𝜇𝑃a
    • Bandwidth upto 1000 Hz
  • Mobility Models for Underwater Sensors
    Users have the ability to configure different mobility models for underwater sensors, including:
    • Random Waypoint
    • Random Walk
    • File-Based
  • Statistics Overview
    NetSim provides detailed summary statistics that cover various metrics:
    • Throughput
    • Delay
    • Error rates
    Both at the link level and on a per-application basis.
  • Trace and logs
    • NetSim offers comprehensive packet and event tracing capabilities, allowing for deep network analysis and performance evaluation.
    • Acoustic measurement log that records Tx-Rx Distance, Tx Power, Pathloss, Total Noise, SNR, Rx Power and BER for each transmission
  • Source Code Accessibility
    • Protocol source C codes are provided.
    • Users can adapt the underlying codes using the MS Visual Studio development environment for specific requirements or enhancements.
  • Integration Capabilities
    • NetSim supports socket-based external interfacing to MATLAB, allowing users to expand their simulation and analysis capabilities.
NNetSim UAN Results

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