Dynamic test algorithm for received signal strength of GSM-R (Global System for Mobile Communications for Railway) network

A received signal strength and GSM-R technology, which is applied in the field of dynamic test algorithm of GSM-R network received signal strength, can solve problems such as inability to effectively complete online real-time test, large amount of calculation, etc.

Inactive Publication Date: 2014-08-06
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The general Lee's algorithm proposed by the University of the Basque Country in Spain can be applied to different multipath fading distributions, but the algorithm is too computationally intensive to effectively complete the online real-time test

Method used

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  • Dynamic test algorithm for received signal strength of GSM-R (Global System for Mobile Communications for Railway) network
  • Dynamic test algorithm for received signal strength of GSM-R (Global System for Mobile Communications for Railway) network
  • Dynamic test algorithm for received signal strength of GSM-R (Global System for Mobile Communications for Railway) network

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Embodiment Construction

[0044]The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0045] figure 1 It is a flow chart of the dynamic test algorithm for the received signal strength of the GSM-R network. As can be seen from the figure, the algorithm mainly includes four steps: envelope detection of received signal, dynamic sampling of signal strength, dynamic estimation of fading parameters, statistical interval and number of sampling points. specifically,

[0046] Step 101: The received signal envelope is detected by the GSM-R transceiver module, and the amplitude or power of the received signal is tested, wherein the amplitude or power is linearly amplified or logarithmically linearly amplified to obtain the received signal strength;

[0047] Step 102: Dynamically sample the received signal strength according t...

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Abstract

The invention discloses a dynamic test algorithm for received signal strength of a GSM-R (Global System for Mobile Communications for Railway) network, which comprises the following steps: 1) performing envelope detection for a received signal; 2) dynamically sampling the received signal strength according to a lastly calculated statistic region and sampling point number of the received signal strength sample; 3) estimating an attenuation parameter for the next received signal strength sample according to the presently sampled received signal strength and a rician distribution parameter of the last received signal strength sample; and 4) calculating the statistic region and sampling point number of the next received signal strength sample according to the attenuation parameter for the next received signal strength sample, and meanwhile, starting the next dynamic sampling for the received signal strength. The dynamic test algorithm for the received signal strength of the GSM-R network provided by the invention has the advantages of on-line real-time property, comprehensive accuracy, small calculated amount, and the demand on real-time data sampling under a high-speed environment is met.

Description

technical field [0001] The invention relates to a signal strength test algorithm, in particular to a dynamic test algorithm for GSM-R network received signal strength. Background technique [0002] The GSM-R network is a comprehensive digital dispatching mobile communication network specially used in the railway environment. It is based on the public network GSM and advanced language call services, and adds group call, broadcast, multi-priority and emergency call services required by the railway. It can Realize the collection and transmission of various mobile information resources on the railway, and provide a communication platform for modern scheduling, command and control. With the promotion of the construction and application of GSM-R digital mobile communication system engineering, and the continuous research and verification of the characteristics and functions of the GSM-R system, in order to ensure the safety and reliability of railway transportation, it has become ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04B17/318
Inventor 龙承念马永森茅晓峰
Owner SHANGHAI JIAO TONG UNIV
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