Table 2 Value of parameters used in simulation
From: Clustering and OFDMA-based MAC protocol (COMAC) for vehicular ad hoc networks
Parameter | Value |
|---|---|
Modulation and data rate | QPSK, r d = 6 Mbps |
Message sizes (L) | 100 × 8 Bits |
Vehicle's speed | 80-120 Km/h |
Communication range (R=Rh) | 300 m (P t = 109 μ W) |
Communication range (R=Rl) | 200 m (P t = 48 μ W) |
Smoothing factor (ζ) | 0.5 |
Control channel interval (CCI) | 100 ms |
Cluster maintenance time (Tf) | 10 s |
Safety time (ts) | 3 s |
ε | 0.1 |
ρ | 1 |
Number of lanes (W) | 4 |
Simulation time | 1,000 s |
Received power threshold (R xTh ) | 3.162e-13 |
Noise-floor | 1.26e-14 |
T tx &T rx antennas heights | 1.5 m |
T tx &T rx antennas gain G t = G r | 4 |
Slot time (σ) | 13 μ s |
Propagation delay (δ) | 1 μ s |