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Wireless communication channel simulation calculation method

A technology of channel simulation and calculation method, applied in the field of calculation of wireless communication channel response, can solve the problems of time complexity and accuracy defects, no direct calculation of reflection, etc., to achieve the effect of high accuracy and broad application prospects

Active Publication Date: 2018-10-30
上海市无线电监测站
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Problems solved by technology

However, they only approximate the reflection path on the side, and do not directly calculate the reflection; or use the result of scattering graph theory plus the absolute value of the power obtained by ray tracing, which has obvious differences in time complexity and accuracy. defect

Method used

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  • Wireless communication channel simulation calculation method

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0048] The invention proposes a wireless communication channel simulation calculation method, which is especially based on an embedded random graph theory algorithm. figure 1 Shown is the flow chart of the simulation calculation method. The simulation calculation method includes the following steps:

[0049] (1) Construct a digital map based on the actual environment corresponding to the channel to be tested. In the digital map, the actual object is discretized into one or more reflection points or scattering points.

[0050] Specifically, according to the size, size and positional relationship of objects in the actual environment corresponding to the channel to be requested, a simulation map, that is, the above-mentioned digital map, is established. According to the roughness of the surface of the object, the object is divided into two type...

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Abstract

The invention provides a wireless communication channel simulation calculation method and belongs to the technical field of communication. The method comprises the steps that 1, a digital map is established based on an actual environment corresponding to a channel to be tested, wherein in the digital map, an actual object is dispersed into one or more reflection points or scattering points; 2, whether a propagation path exists between every two catapulting points or not is judged, a transfer function matrix between every two catapulting points is established, and the reflection points, scattering points, transmitting antennae and receiving antennae are the catapulting points; 3, according to the transfer function matrixes obtained in the step 2, a transfer function of the channel to be tested is calculated; 4, according to the transfer function obtained in the step 3, channel impulse response of the channel to be tested is calculated. By adopting the wireless communication channel simulation calculation method, important channel characteristic parameters such as multipath effect caused by reflection and scattering in channels can be simultaneously, efficiently, simple and directlycalculated, so that the simulation results have higher accuracy. The wireless communication channel simulation calculation method has a wide application prospect in the field of wireless communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a calculation method of channel response, in particular to a calculation method of wireless communication channel response. Background technique [0002] The existing graph theory algorithms for wireless communication channel simulation do not consider the multipath caused by reflection, they only abstract the objects in the actual environment into scattering points, and calculate the multipath of the channel through the scattering matrix. But in actual communication, there is an essential difference between the multipath time delay caused by reflection and the multipath time delay caused by scattering. On the one hand, the surface roughness of the reflector and the scatterer is different, and the energy loss of the electromagnetic wave at the ejection point is different; on the other hand, the angle deflection of the electromagnetic wave at the reflection point is fixed, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391
CPCH04B17/3912H04B17/3913
Inventor 刘元范志平尹学锋徐弘良叶筱康盛峰
Owner 上海市无线电监测站
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