无线航空电子机内通信MIMO信道仿真

doi:10.7527/S1000-6893.2023.28969

Abstract

Abstract:

Wideband intra-connection for Wireless Avionics Intra-Communications （WAIC） can be achieved by using multi-antenna Wireless Local Area Networks （WLAN）. In the avionics cabin， the reflection of signals between the cabin structure and avionics equipment racks is the main factor causing multipath fading. Moreover， the correlation between received signals from different antennas generally cannot be disregarded when Multiple-Input Multiple-Output （MIMO） transmission is performed. In this paper， a three-dimensional model is established according to the arrangement geometric relationship and material properties of the avionics equipment racks and equipment. The signal propagation path in the avionics cabin is simulated using the reflection angle error method of the receiving sphere. For different avionics equipment installation density， simulations are performed considering the reception scenarios of uniform linear and circular antenna signals separately. Cluster-based data preprocessing is used to derive the multi-cluster multipath channel model， as well as the WAIC channel characteristics of the avionics cabin described by multipath fading and time delay distribution. The MIMO channel transmission matrix and the impact of inter-receiver antenna correlation on channel performance are obtained through statistical analysis. The simulation analysis shows that the channel conditions can be approximated using fully loaded channel parameters when the installation density of avionics equipment is greater than 60%. The simulation analysis method proposedcan provide a reference for the analysis and design of MIMO wireless transmission characteristics near avionics equipment racks.

Key words: Wireless Avionics Intra-Communications (WAIC), Multiple-Input Multiple-Output (MIMO), avionics compartment, Wireless Local Area Network (WLAN), channel simulation

CLC Number:

V243.1

Yuedong ZHUO, Qiao LI, Guangshan LU, Junjie WU. Simulation of MIMO channel for wireless avionics intra-communications[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(8): 328969-328969.

Figures/Tables 13

Fig.1

Fig.2

Fig.3

Table 1

Fig.4

Fig.5

Table 2

Simulation setup

组号	航电设备安装密度	天线位置	天线间隔	天线排布
1	0%~100%	对侧	$0.5 λ$	ULA
2	0%~100%	同侧	$0.5 λ$	ULA
3	100%	对侧	$0.5 λ$	ULA
4	100%	对侧	$0.5 λ$	UCA
5	100%	对侧	$2 λ$	UCA

Table 2

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

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Simulation of MIMO channel for wireless avionics intra-communications

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