隧道环境单根泄漏电缆MIMO系统的性能测量
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摘要
通常多输入多输出(multiple-input multiple-output, MIMO)系统需要两根以上泄漏电缆来传输不同信息流.研究隧道环境下单根泄漏电缆双向馈入构成2×2 MIMO系统的性能.测量结果发现,单根泄漏电缆MIMO系统的容量与双根泄漏电缆构成的MIMO系统接近,明显优于单输入单输出(single-input single-output, SISO)系统.研究结果可为轨道交通系统LTE-M通信专网设计提供参考.
Usually, a multiple-input multiple-output(MIMO) system needs to deploy more than two leaky coaxial cables(LCXs). A 2 × 2 MIMO system using a single LCX as transmitters was measured. Signals are fed from both ends of the LCX port separately,which can be used as two antennas. The results show that the performance of a single LCX system is close to that with two LCXs, and is much better than a single-input single-output system. The conclusion provides a reference for the design of LTE-M private communication networks.
Usually, a multiple-input multiple-output(MIMO) system needs to deploy more than two leaky coaxial cables(LCXs). A 2 × 2 MIMO system using a single LCX as transmitters was measured. Signals are fed from both ends of the LCX port separately,which can be used as two antennas. The results show that the performance of a single LCX system is close to that with two LCXs, and is much better than a single-input single-output system. The conclusion provides a reference for the design of LTE-M private communication networks.
引文
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[2]Farahneh H,Fernando X.Leaky feeder,a new linear array transceiver for micro/pico cells[C]//IEEE 28th Canadian Conference on Electrical and Computer Engineering.2015:98-102.
[3]Wu Y M,Zheng G X,Wang T.Performance analysis of MIMO transmission scheme using single leaky coaxial cable[J].IEEE Antennas&Wireless Propagation Letters,2016,16:298-301.
[4]Kafle P L,Intarapanich A,Sesay A B,et al.Spatial correlation and capacity measurements for wideband MIMO channels[J].IEEE Transactions on Wireless Communications,2008,7(5):1560-1571.
[5]Medbo J,Nilsson A.Leaky coaxial cable MIMO performance in an indoor office environment[C]//IEEE 25th Annual International Symposium on Personal,Indoor,and Mobile Radio Communication(PIMRC).2012:2061-2066.
[6]Valdesueiro J A,Izquierdo B,Romeu J.On 2×2 MIMO observable capacity in subway tunnels at,C-band:an experimental approach[J].IEEE Antennas and Wireless Propagation Letters,2010,9(3):1099-1102.
[7]Kyritsi P,Cox D C,Valenzuela R A,et al.Effect of antenna polarization on the capacity of a multiple element system in an indoor environment[J].IEEE Journal on Selected Areas in Communications,2006,20(6):1227-1239.
[8]郑国莘,林苏燕,武艺鸣,等.采用双漏缆覆盖的轨道交通LTE-M系统信道的测量研究[J].电波科学学报,2016,31(5):906-911.
[9]Tsukamoto S,Maeda T,Ariyoshi M,et al.An experimental evaluation of 2×2 MIMOsystem using closely-spaced leaky coaxial cables[C]//IEEE Asia-Pacific Signal and Information Processing Association.2014:1-5.DOI:10.1109/APSIPA.2014.7041676.
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