Broadband wireless multi-input multi-output (MIMO) channel modeling method for vehicle-to-vehicle communication

Abstract

The invention discloses a broadband wireless multi-input multi-output (MIMO) channel modeling method for vehicle-to-vehicle communication. The method comprises the following steps of: measuring a channel to obtain channel impulse response; according to the channel impulse response, extracting a discrete multi-path component and counting the distribution of parameters of the discrete multi-path component; judging whether a collineation component exists, if so, acquiring the collineation component according to a geometrical relationship, otherwise, setting the collineation component as 0; according to vehicle density and statistical distribution of dynamic and static reflectors, setting a reflection environment, and respectively acquiring dynamic and static reflection components according to a processing result of channel measurement data; subtracting the discrete multi-path component from the channel impulse response to obtain a remainder, estimating scattering component parameters according to the remainder, and counting the distribution of the scattering component parameters to obtain a scattering component; and superposing the four components to obtain a channel transfer matrix so as to finish channel modeling. The method has the advantages that: on the basis of the non-stationarity and time-varying performance of a vehicle-to-vehicle communication environment, a channel model is established by taking influence of the dynamic reflection component into full consideration and using other components, and the channel model can be approximate to an actual channel.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wideband wireless MIMO channel modeling method for vehicle-to-vehicle communication. Background technique [0002] Vehicle-to-Vehicle (V2V) communication plays an important role in improving traffic safety, improving traffic system efficiency, and comfortable driving, so it has received extensive attention. While V2V wireless communication has attracted much attention, it also faces many challenges. Among them, V2V channel modeling is one of the key issues to be solved in V2V wireless communication systems, and is an important basis for V2V system design and verification. How to perform simple and effective channel modeling has become an important topic in V2V communication research. [0003] At present, the existing V2V channel modeling methods can be divided into three categories: based on geometric deterministic model (GBDM), non-geometric statistical model (NGSM), and...

AI Technical Summary

Problems solved by technology

However, the influence of the scattering component on the accuracy of channel modeling and the performance of the channel model cannot be ignored, and the existing V2V channel model does not consider the influence of this part of the component

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