(Due at the beginning of
class on 10/06/08)
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 here.
Here 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
PROPAGATION-PATHLOSS: FREE-SPACE, TWO-RAY
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-SENSITIVITY:
-100.9
RADIO-RX-THRESHOLD:
-100.9
Using BER as the receiving criteria, compare the packet loss ratios under three
different coding schemes: BPSK, DPSK, DBPSK. Hint:
In the config.in file the following parameters set
BPSK as the coding scheme.
RADIO-RX-TYPE: BER-BASED
BER-TABLE-FILE: ./ber_bpsk.in
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: