Planning Optimization of the Distributed Antenna System in High-Speed Railway Communication Network Based on Improved Cuckoo Search

Table 3

Parameter setups of the simulation.

Parameter	Symbol	Value
Length of the railway		30 km
Transmit power		15 dBm
White Gaussian noise		−104 dBm
Bit error rate constraint		0.01
Hand-off factor		2
Hand-off time		2 s
Velocity of the train		300 km/h
Network rate limit		1 Mbit/s
Path loss exponent		3.665
Distance between the antennas of the DAS and the train		50 m
Network bandwidth		106 Hz
The number of the antennas within a single cell		4
Oscillation factor		0.01
Close-in reference distance		100 m
Path loss for distance		71.83