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A method of establishing a multi-wall embedded loss model and its application

A technology of loss model and establishment method, which is applied in transmission monitoring, electrical components, transmission system, etc., and can solve problems such as complex signal fluctuations and traditional model characteristics

Active Publication Date: 2020-09-04
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the problem that the signal fluctuations caused by multiple walls are more complex and traditional models cannot accurately describe its characteristics, the present invention provides a method for establishing a multi-wall embedded loss model and its application

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  • A method of establishing a multi-wall embedded loss model and its application
  • A method of establishing a multi-wall embedded loss model and its application
  • A method of establishing a multi-wall embedded loss model and its application

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Embodiment 1

[0052]The multi-wall embedding loss model under the Nakagami fading channel proposed by the present invention is described in detail below:

[0053] (1) Under the Nakagami fading channel, when the wireless signal passes through a single wall (or no wall exists), the signal

[0054] The magnitude of obeys the Nakagami distribution, so the instantaneous power of the wireless signal (denoted by P) obeys the Gamma distribution:

[0055] P fre_1 ~Gamma(m 1 ,w 1 ), P obs_1 ~Gamma(m 2 ,w 2 )

[0056] Among them, P fre_1 Indicates the instantaneous power of the wireless signal at the first measurement without indoor wall obstruction, P obs_1 Indicates the instantaneous power of a wireless signal passing through a single indoor wall;

[0057] Correspondingly, use the same method to define the instantaneous power when the wireless signal passes through (or does not pass through):

[0058] P fre_2 ~Gamma(m 3 ,w 3 ), P obs_2 ~Gamma(m 4 ,w 4 )

[0059] Among them, P fre_2...

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Abstract

The invention discloses a method for establishing a multi-wall penetration loss model, and an application thereof, and belongs to the technical field of wireless communication. The received power in the presence or absence of two walls is described by a product of two independent Gamma variables. A closed expression is proposed to represent the small-scale distribution characteristics of signal loss caused by passing through the two walls, the problem that the signal fluctuation caused by the existing multiple walls is more complex, such that the characteristics cannot be accurately describedby the traditional model is solved, the wall penetration loss of a wireless signal in an ultra-dense small cell network can be accurately predicted, thereby better solving the coverage hole of the indoor communication and enhancing the user experience quality.

Description

technical field [0001] The invention relates to a method for establishing a multi-wall embedding loss model and its application, and belongs to the technical field of wireless communication. Background technique [0002] Ultra-dense small cell (UDSC) is a key candidate technology in the 5G system. Its main purpose is to solve the coverage hole of indoor communication and enhance the user's quality of experience. The successful application of UDSC depends on a comprehensive study of the propagation characteristics of indoor channels. In indoor scenes, multiple walls will cause significant signal strength attenuation. Therefore, it is necessary to explore the wall embedding loss under UDSC network. [0003] In recent years, researchers have carried out a considerable campaign of measurements of wall embedment losses. In general, they can be divided into two categories. The first category describes the relationship between electromagnetic wave penetration loss and transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391
CPCH04B17/3911
Inventor 李正权梁金鹏刘洋曹雪峰李宝龙吴琼白天石戴礼浩赵小青
Owner JIANGNAN UNIV
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