A simulation method of large-scale complex uwb channel

A simulation method and large-scale technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of high experimental conditions, a lot of manpower and material resources, low calculation accuracy, etc., to achieve accelerated solution, fast extraction, fast channel Effects of parameters

CN103684640BActive Publication Date: 2016-04-20NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-04-20

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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.
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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 Wideband (UWB) communication has high communication capacity, high data transmission rate, strong anti-multipath in...

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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] ...