Double-cluster geometric channel modeling method based on three-dimensional space

Abstract

The invention discloses a double-cluster geometric channel modeling method based on a three-dimensional space. The method comprises the following steps: firstly, building a large-scale MIMO V2V channel model based on a geometric relation in a confocal semi-ellipsoid scattering scene; secondly, using the concept of clusters to describe scatterers, wherein many scatterers exist in the clusters, andthe clusters are randomly distributed on the semi-ellipsoidal surface; supposing that the number of the scatterers in the clusters approaches infinity, and respectively expressing the continuous random variables alphaT<nl,1>, betaT<nl,1>, alphaR<nl,2> and betaR<nl,2> by discrete variables alphaT<l,1>, betaT<l,1>, alphaR<l,2> and betaR<l,2>; then, introducing a birth and death algorithm to simulatedisappearance and evolution of the clusters on a time axis and an array axis; and finally, deducing the statistical characteristics of the proposed channel model according to the complex channel impulse response. The performance of the communication system of the V2V in the semi-ellipsoidal environment is improved by calculating the geometric statistical characteristics of the three-dimensional double-cluster semi-ellipsoidal body.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a two-cluster geometric channel modeling method based on three-dimensional space. Background technique [0002] In recent years, with the rapid development of fifth-generation (5G) wireless communication networks, vehicle-to-vehicle (V2V) communication has received extensive attention. In this model, adopting massive multiple-input multiple-output (MIMO) is a very sensible choice, because it can meet many needs of 5G wireless communication. Therefore, in order to more accurately evaluate the performance of V2V communication systems, it is necessary to establish an accurate channel model to describe the transmission characteristics between the mobile transmitter (MT) and mobile receiver (MR). In the communication environment, the wave emitted by the transmitter will hit the scattering objects in the surrounding environment before reaching the receiver, so it is n...

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Problems solved by technology

J. Zhang, C. et al. Experimentally show that in two-dimensional space, when describing the signal propagation between transmitter and receiver, the estimation of system performance is inaccurate

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