Channel associated shadow fading construction method based on stationary random process

A shadow fading, stable and random technology, applied in wireless communication, electrical components, network planning, etc., can solve the problems of different shadow fading correlation values ​​of observation points, problems with initial point normalization, and uncertainty.

Inactive Publication Date: 2014-02-05
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0012] However, there is a problem when the traditional autocorrelation model is used: within the scope of observation, the shadow fading correlation values ​​between observation points are different, this is because the correlation coefficient model of (1) is a negative distribution, each The correlation coefficients between the points are different
However, when the autocorrelation

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  • Channel associated shadow fading construction method based on stationary random process
  • Channel associated shadow fading construction method based on stationary random process
  • Channel associated shadow fading construction method based on stationary random process

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[0042] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] refer to figure 1 , shows a flowchart of a method for constructing a time-varying channel-dependent shadow fading model based on a stationary stochastic process in the present invention.

[0044] Step 101, according to the actual propagation environment, the time-varying channel is decomposed into several stable intervals;

[0045] Step 102. Determine the mean value and root mean square of shadow fading in each stationary interval.

[0046]Most propagation models are produced through a combination of analysis and experimentation. The experimental method is based on a suitable curve or analytical formula to fit a series of measurement data. Its advantage is that all propagation factors, known and unknown, are considered ...

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Abstract

The invention provides a channel associated shadow fading construction method based on a stationary random process, relating to the field of wireless communication. A time varying channel associated shadow fading model construction method base on a stationary random process comprises a step 101 of segmenting a time-varying channel into a plurality of stationary intervals according to an actual transmission environment, a step 102 of determining the mean value and root-mean-square of the shadow fading in each stationary interval, and a step 103 of simulating the shadow fading with correlation in the stationary interval according to the stationary random process time varying channel associated shadow fading model.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for constructing channel-related shadow fading based on a stationary random process. Background technique [0002] With the development of wireless communication technology, there is an urgent need for wireless operators to provide people with effective, reliable and safe wireless communication services "at any time" and "at any place". In the past, wireless communication access services were mainly aimed at accessing fixed or slow moving scenarios, such as indoor wireless coverage and wireless coverage in dense urban areas. Higher hopes are placed on broadband access services on rapid transportation vehicles such as subways (or urban rails) and expressways. [0003] Compared with fixed wireless access, the biggest difference in wireless communication access under high-speed mobile conditions is due to the Doppler brought by the movement (including the re...

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Application Information

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IPC IPC(8): H04W16/22
Inventor 刘留陶成邱佳慧周涛孙溶辰
Owner BEIJING JIAOTONG UNIV
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