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Table 2 Simulation parameters

From: Improving cellular downlink throughput by multi-hop relay-assisted outband D2D communications

Description

Parameter

Value

Transmitting antenna gain

G t

1

Receiving antenna gain

G r

1

Transmitting antenna height

h t

1 m

Receiving antenna height

h r

1 m

Transmitting power for UE

p ue

0.1w

Transmitting power for eNB

p c

10w

BER threshold for UE

BE th

10−10

Environment noise power for UE

N i

For any UEi, 2 × 10−11

Carrier signal wavelength

λ

0.1224 m

System loss factor

L

1

Crossover distance

d crossover

103 m

Path loss exponent

α ji

For any link j→i, α ji  = 2 when d ji  < d crossover ; α ji  = 4 when d ji  ≥ d crossover

Initial battery capacity

e i,int

For any UEi, e i,int is randomly distributed between 0.05 J and 0.2 J

Transmitter electronics energy

φ 11

26.5 nJ/bit

Receiver electronics energy

φ 12

59.1 nJ/bit

Radio amplifier energy

φ 2

For any link j→i, 10 pJ/bit/m2when α ji  = 2; 0.0013 pJ/bit/m4when α ji  = 4

Packet forwarding capacity

t b i

For any UEi, t b i is 100 ns/bit

Data packet length

M

2500 bit