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).
Tactical MANET Radios

  • 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