Simulation - I                                        9/24/08

(Due at the beginning of class on 10/06/08)


CS G254 Wireless Networks

This assignment will be graded out of 50 points.


In this assignment, you will get introduced to Glomosim, a basic simulator for wireless networks that is popular within the academic research community.  Setup GlomoSim simulator in your own UNIX account or in your own Windows system. You can download Glomosim from hereHere are detailed installation instructions and here is a tutorial.


Set up the following two-node wireless network scenario:


Node number:            2
Terrain:                    1000*1000
Traffic pattern:        CBR
Packet Length:          512B
Data Rate:                1Mbps
Simulation time:      10s
Static Routing


1.      Transmission range: Find out the transmission ranges corresponding to the 8 settings obtained by varying the following 3 dimensions:

Tx Power:                                      1dBm, 10dBm,
Tx Receive Threshold:                  -81.0dBm, -91dBm

Compare your results with the equations in section 2.3 of  glomoman.pdf. Please submit the following:

a.       A brief description of your simulation procedure. [4]

b.      Script file of command line output. [6]

c.       A table, giving the transmission ranges for each of the 8 setting. [5]

d.      A plot of TX power vs transmission range, for a fixed receive threshold of -81.0dBm, for each of the two propagation-loss models. [5]

e.       A brief analysis or comparison of different propagation models. [5]


2.      Performance analysis of different signal coding schemes: Set the following parameters in your config file:


Tx Power:                                    1dBm


RADIO-RX-THRESHOLD:        -100.9

Using BER as the receiving criteria, compare the packet loss ratios under three different coding schemes: BPSK, DPSK, DBPSKHint: In the file the following parameters set BPSK as the coding scheme.

BER-TABLE-FILE:          ./

Plot the packet loss rate as a function of traffic distance, varying the distance in step of 10 meters from 250m to 370m. Change the packet length to 32B, repeating the above simulations.


Please submit the following:

  1. Script file of your command line output. [6]
  2. Brief description of simulation scenario. [4]
  3. Plots of packet loss rate vs. distance. [15]