隧道场景中具有单根泄漏同轴电缆的多输入多输出系统的信道模型与性能分析

Channel Model and Performance Analysis for MIMO Systems with Single Leaky Coaxial Cable in Tunnel Scenarios.

作者信息

Zhang Kai, Zheng Guoxin, Wang Hua, Zhang Changming, Yu Xianbin

机构信息

Research Institute of Intelligent Network, Zhejiang Lab, Hangzhou 311121, China.

Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China.

出版信息

Sensors (Basel). 2022 Aug 2;22(15):5776. doi: 10.3390/s22155776.

DOI:10.3390/s22155776

PMID:35957339

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370864/

Abstract

Due to the limited space in the tunnel environment, multiple-input multiple-output (MIMO) systems with double-port fed leaky coaxial cables (LCXs) can not only reduce the number of LCXs, but also improve the channel capacity. Based on the geometry based on single bonce (GBSB) and electromagnetic field radiation theory of LCX, a MIMO channel model with double-port fed LCX in a tunnel scenario is proposed in this paper. The channel impulse response (CIR) is derived, and verified with measurement results in terms of channel capacity. The distribution of channel capacity of single double-port fed LCX under different LCX lengths in the tunnel scenarios has also been analyzed in this work, and the distribution of channel capacity for the LCX-MIMO system with long LCX is predicted. The results show that the single double-port fed LCX-MIMO system outperforms the dipole antenna MIMO system with respect to channel capacity in the considered tunnel scenarios.

摘要

由于隧道环境空间有限，采用双端口馈电泄漏同轴电缆（LCX）的多输入多输出（MIMO）系统不仅可以减少LCX的数量，还能提高信道容量。基于单次反射几何（GBSB）和LCX的电磁场辐射理论，本文提出了一种隧道场景下双端口馈电LCX的MIMO信道模型。推导了信道冲激响应（CIR），并根据信道容量的测量结果进行了验证。本文还分析了隧道场景中不同LCX长度下单双端口馈电LCX的信道容量分布，并预测了长LCX的LCX - MIMO系统的信道容量分布。结果表明，在所考虑的隧道场景中，单双端口馈电LCX - MIMO系统在信道容量方面优于偶极天线MIMO系统。