300GHz频段视距MIMO传输的实验验证
Experimental Verification on LoS-MIMO Transmission in 300-GHz Band
AI总结：
该研究通过实验验证300GHz频段下LoS-MIMO传输的可行性，研发了相关天线与收发信机，实现了13.1Gbit/s吞吐量，为高容量固定无线链路及长距离传输提供设计参考。
AI中文摘要：
本研究开展了300GHz频段下视距（LoS）2×2多输入多输出（MIMO）正交频分复用（OFDM）传输实验，以探究信道容量提升的潜力。研发了支持交叉极化和同极化的圆极化贴片天线，以及配备预校正（Pre-Correction）方案的2×2 MIMO收发信机。实验在流间距为0.3m、传输距离为1.9m的条件下进行。结果显示，在同极化和交叉极化天线配置中，非对角分量均被抑制至-20dB以下，采用16-QAM调制的双流传输实现了13.1Gbit/s的吞吐量和6.55bit/s/Hz的频谱效率。此外，还探讨了基于信道相关性分析的高级空间复用未来研究方向。这些结果证明了高容量固定无线链路的可行性，并为长距离传输提供了实用的设计见解。
英文摘要：
In this study, we conducted Line-of-Sight (LoS) 2x2 multiple-input multiple-output (MIMO) orthogonal frequencydivision multiplexing (OFDM) transmission experiments in the 300-GHz band to investigate the potential for channel capacity enhancement. A circularly polarized patch antenna, supporting both crossand co-polarization, and a 2x2 MIMO transceiver equipped with a Pre-Correction scheme were developed. Experimental evaluation was carried out under conditions of a stream spacing of 0.3 m and a transmission distance of 1.9 m. As a result, in both coand cross-polarized antenna configurations, the off-diagonal components were suppressed below -20 dB, and 2-stream transmission with 16-QAM modulation achieved a throughput of 13.1 Gbit/s and a spectral efficiency of 6.55 bit/s/Hz. Furthermore, future research directions toward advanced spatial multiplexing based on channel correlation analysis are discussed. These results demonstrate the feasibility of highcapacity fixed wireless links and provide practical design insights for long-distance transmission.
