The method for computing signal attenuation in wireless data transmission systems taking the relief and antenna parameters into account

2008 ◽  
Vol 69 (2) ◽  
pp. 343-350
Author(s):  
Yu. S. Legovich ◽  
D. Yu. Maksimov ◽  
Yu. V. Maksimov
2017 ◽  
Vol 2017 (6) ◽  
pp. 13-25
Author(s):  
Andrzej Lewiński

The paper deals with presentation of up to date state of protection in dissipated, computer railway control and management systems, including the future systems implemented in Polish State Railways based on wireless standards with regard the ETMS/ETCS solutions.


2010 ◽  
Vol 455 ◽  
pp. 206-210
Author(s):  
Jun Li Liu ◽  
Yan Yan Yan ◽  
G.Q. He

It discusses the reasons of the data transmission time delay and packets loss based on the theory of net data transmission. Aimed to the question of the time delay of data transmission and packets loss, the control system models are set up to analyze their influence to the performance of the control system. Based on the synchronous control model analysis with wireless data transmission, a method to control the system is reached with the state prediction when the communication error or data loss appears. It can control constantly when communication errors appear, and also it can get the most error period by numerical analysis.


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