Wireless Cable Method for High-Order MIMO Terminals Based on Particle Swarm Optimization Algorithm

被引:11
|
作者
Fan, Wei [1 ]
Zhang, Fengchun [1 ]
Kyosti, Pekka [2 ,3 ]
Hentila, Lassi [2 ]
Pedersen, Gert Frolund [1 ]
机构
[1] Aalborg Univ, Dept Elect Syst, Antennas Propagat & Millimeter Wave Syst Sect, DK-9100 Aalborg, Denmark
[2] Keysight Technol Finland Oy, Oulu 90014, Finland
[3] Univ Oulu, Ctr Wireless Commun, Oulu 90014, Finland
关键词
Multiple-input-multiple-output (MIMO) over-the-air (OTA) testing; MIMO performance testing; particle swarm optimization (PSO) algorithm; radio channel propagation; wireless cable method; UNCERTAINTY;
D O I
10.1109/TAP.2018.2858193
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Conducted cable setups have been dominantly utilized in the industry for performance testing of multiple-input-multiple-output (MIMO) terminals. The wireless cable method, which can achieve cable connection functionality without actual radio frequency cable connections, is a promising alternative. To date, the wireless method has been only discussed for 2 x 2 MIMO terminals in the literature. However, the algorithm is not directly applicable for high-order MIMO terminals, due to the high computation complexity to determine the calibration matrix and high system cost to implement the calibration matrix. In this paper, an efficient particle swarm optimization (PSO) algorithm is proposed to determine the calibration matrix for high-order MIMO systems. Furthermore, a novel implementation of the calibration matrix in the radio channel emulator is proposed, which can significantly reduce the system cost. To validate the proposed algorithm, two MIMO mockups, each equipped with four antennas, were measured in an anechoic chamber. The measured results demonstrated the effectiveness of the PSO algorithm to establish wireless cable connections for 4 x 4 MIMO terminals.
引用
收藏
页码:5536 / 5545
页数:10
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