Simulation GUI
Create Scenario
Open NetSim and click New Simulation > Underwater Acoustic Networks as shown Figure-1.
Figure-1: NetSim Home Screen
Devices specific to NetSim UWAN Library
Figure-2: The Devices present in the ribbon of NetSim GUI
Placement of devices on the grid environment
Add an Underwater Device - Click on the Underwater Device icon on the toolbar and place the device in the grid.
Enable Packet Trace, Event Trace (Optional)
Check Packet Trace / Event Trace option from the Configure Reports tab. To get detailed help, please refer to sections 8.4 and 8.5 in User Manual.
Figure-3: Enable Packet Trace, Event Trace & Plots options on top ribbon.
Enable protocol specific logs and plots
NetSim provides protocol-specific logs for UWAN libraries, which users can enable before running a simulation. These can be enabled by clicking on configure reports in top ribbon > clicking on plots > choosing as desired and running the simulation.
Figure-4: Enabling Acoustic Measurements log
Similarly, users can enable the plots for Acoustic Measurements and energy.
Figure-5: Enabling the plots for UWAN
GUI Configuration Parameters
The UWAN parameters can be accessed by right clicking on an Underwater device > selecting Open properties as new window >Interface (Acoustic) Properties 🡪 Physical Layers.
UWAN Properties |
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** Interface (Acoustic) – Physical Layer** |
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Parameter |
Type |
Range |
Description |
Source Level |
Local |
170 - 225 \(dB//\ 1\ \mu Pa\) Default: 190 |
It is the signal level of the transmitter. For converting from electrical transmit power, \(P_{tx}^{el}\) in Watts (W), to SL in dB// 1 μPa, the following equation can be used
\[SL = 10\log_{10}{(P_{tx}^{el}}\lbrack W\rbrack) + 170.8\\]
|
Antenna Gain (dBi) |
Local |
-1000 to 1000 dBi |
A relative measure of an antenna’s ability to direct or concentrate radio frequency energy in a particular direction or pattern. The measurement is typically measured in dBi. |
Forward error correction coding (FEC) |
Fixed |
TRUE |
FEC is used for controlling Error-Correcting code, in data over unreliable or noisy communication channels. This is always set to true and the SNR BER calculations factor in FEC. |
Modulation |
Local |
QPSK BPSK FSK 16QAM 64QAM 256QAM |
Modulation is the process of varying one waveform in relation to another waveform. It is used to transfer data over an analog channel. |
Coding Rate |
Local |
1/2, 2/3, 3/4, 5/6 |
It states what portion of the total amount of information is useful (non-redundant). This code rate is typically a fractional number. |
Frequency |
Local |
0.01-1000kHz |
The center frequency in the transmission bandwidth |
Data rate (kbps) |
Local |
0-255 kbps |
It is the number of kilo-bits that are conveyed or processed per second |
Receiver Sensitivity (dB) |
Local |
-120 – 0dBm Default: -85 dBm |
It is the lowest power level at which the receiver can detect the acoustic signal and demodulate data. The interference threshold is equal to the receive sensitivity as explained in 3.1.8 |
Bandwidth (Hz) |
Local |
0-1000 Hz |
Bandwidth is the range of frequencies occupied by acoustic signals. |
Table-1: UWAN Config Properties