Manpack UHF Radios

Model, simulate and analyze the performance of a Tactical MANET radio network

50 soldiers engaging the enemy, are divided into five groups with 10 in each group.
Soldiers in each group are continuously moving. Soldiers belonging to a group move together
Communication happens within the group, as well as across the group.(Inter and Intra communication).

NetSim Simulator: Manet

Technology: MANET over TDMA
Simulation Environment Size: 5 Km * 5 Km
No. of wireless nodes – 50 wireless nodes in 5 groups of 10
Transport Layer UDP
Network layer DSR, AODV, ZRP, OLSR
Data Link Layer Dynamic TDMA
Physical Layer
- Protocol: DTDMA
- Band : UHF
- Frequency Range : 476 MHz to 478 MHz
- Channel Bandwidth (MHz): 2
- Frequency Hopping : ON
- Modulation : QPSK, 16-QAM, 64-QAM
- Transmitter power : 4W
- Receiver sensitivity : -119 dBm

RF Propagation:
- Path Loss Model : LOG_DISTANCE
- Fading Model : Rayleigh
- Fading Figure (m) : 1
- Shadowing Model: Log Normal
Applications: 13 Voice Applications
Traffic rate:
- 9.6 Kbps voice traffic
- Two voice applications between the same group members
- One voice application between the members in different groups
Crypto: AES

Performance Analysis:

We analyze the performance of Network layer protocols AODV and OLSR in terms of the latency experienced by the voice packets. We also analyze how multi-hop communication happens in this case.

Conclusions

AODV protocol has lower latency when compared to OLSR, and hence the preferred protocol to use
The latency exceed acceptable theshold when there are more than four hops involved