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Simulation method of large-scale complex UWB (Ultra Wide Band) channel

A simulation method and large-scale technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as low calculation accuracy, low accuracy of results, and difficulty in analyzing channel problems, achieving fast channel parameters and speeding up the solution , the effect of quick extraction

Active Publication Date: 2014-03-26
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0007] (2) In the existing channel deterministic modeling research, the FDTD method is not flexible enough for modeling, because it is difficult to analyze complex channel problems because of the Yee grid
Traditional high-frequency methods have low calculation accuracy, such as SBR and other methods, the calculation time is relatively fast, but the result accuracy is not high

Method used

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  • Simulation method of large-scale complex UWB (Ultra Wide Band) channel
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  • Simulation method of large-scale complex UWB (Ultra Wide Band) channel

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] A kind of emulation method of large-scale complex UWB channel of the present invention, the steps are as follows:

[0020] The first step is to model and mesh the channel, such as figure 1 Shown is a simple schematic diagram of the channel, using the curved hexahedron grid subdivision algorithm to subdivide the object, as follows figure 2 The meshing shown. The subdivision size is larger than 0.1λ (λ is the wavelength of electromagnetic wave). After subdivision, the vertex number and coordinates of each hexahedron unit, the number of the hexahedron, etc. are obtained.

[0021] In the second step, the electric field is expanded at the nodes using the GLL basis function,

[0022] In the 1-D standard reference unit ξ∈[-1,1], the N-order GLL (Gauss-Lobatto-Legendre, Gauss-Lobatto-Legendre) basis function is defined as:

[0023] ...

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Abstract

The invention discloses a simulation method of a large-scale complex UWB (Ultra Wide Band) channel. The method adopts curvilinear hexahedron to subdivide a complex wireless channel model, and thus modeling at any grid can be achieved. By solving a vector wave equation, the diversity of material can be met, and the distribution of space electric fields can be accurately obtained; obtained electric filed information is deconvolved by a clean algorithm to obtain system impact response and extract the parameter of the channel. The simulation method of the large-scale complex UWB (Ultra Wide Band) channel utilizes the character of a time domain spectrum element method that can solve a matrix equation rapidly, and simultaneously utilizes an efficient parallel technology, so that the analysis on super-large scale wireless channel problems can be obviously accelerated.

Description

technical field [0001] The invention belongs to the research field of UWB deterministic channel model characteristics, in particular to a fast simulation method for large-scale and complex UWB channels. Background technique [0002] With the improvement of living standards, wireless communication has become an indispensable part of people's life. The use of a large number of wireless communication base stations and handheld devices has made the wireless communication environment worse and worse. As the medium of wireless communication, wireless channels are very important for wireless communication. Indexes such as speed, capacity, and distance have important influences, and problems such as multipath fading and time delay seriously restrict the development and improvement of communication technology. Among the current wireless communication technologies, Ultra Wide Band (UWB) communication has the advantages of high communication capacity, high data transmission rate, stron...

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Application Information

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IPC IPC(8): H04B17/00H04B17/391
Inventor 陈如山丁大志樊振宏许浩
Owner NANJING UNIV OF SCI & TECH
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