Performance Comparison of Practical Resource Allocation Schemes for Device-to-Device Communications

Table 3

System parameters.

Parameter	Value
System bandwidth	5 MHz
Carrier frequency	2 GHz
Number of cells	7
Radius of cells	500 m
Number of cellular UEs per cell	8 or 6
Number of D2D pairs per cell	8 or 6
Distance between D2D transmitter and receiver	30–70 m
Standards deviation of errors in matrix	10 dB
Range of the errors in matrix	or
Number of simulations	100
Maximal transmission power of all UE	24 dBm
Noise power	174 dBm/Hz
Path loss coefficient,	3.5
Lognormal shadow fading,	6 dB
Compensation factor of LTE open loop
Weight for utility maximizing PC according to (15)	1