Optimization Framework and Parameter Determination for Proximity-Based Device Discovery in D2D Communication Systems

Table 1

Simulation parameters.

Parameter	Value
Simulation region	1000 m × 1000 m (wrap-around)
Device density ()
Figures 4 and 7	0.005/m^2
Figure 5	0.001~0.004/m^2
Figure 6	0.002/m^2
Path loss exponent ()	4
Shadowing	Not applied
Fading	Flat Rayleigh fading
Bandwidth ()	10 KHz
Message length ()	100 bits
Initial number of RBs in discovery period ()	8
Target SIR (SIRTarget)
Figures 4 and 5	0 dB
Figure 6	−10~20 dB
Figure 7	7 dB