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首页> 外文期刊>Photonics Journal, IEEE >Experimental Evaluation of Indoor Optical Wireless MIMO Systems With Square and Linear Array Constellations
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Experimental Evaluation of Indoor Optical Wireless MIMO Systems With Square and Linear Array Constellations

机译：具有方形和线性阵列星座的室内光学无线MIMO系统的实验评价

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摘要

In this article, we investigate the performance of the newly designed 4 × 4 optical wireless multiple-input-multiple-output (MIMO-OWC) system based on a linearly-shaped arrangement of transmitters and receivers, to achieve long-distance and high data rate transmission. To highlight the importance of selecting an appropriate arrangement for the optical elements, we carried on a comparative study, considering both the conventional square and the proposed horizontal linear constellation of optical modems. The performance of the bit error rate (BER) is experimentally evaluated at distances up to 65 m, using two important metrics inherent to the MIMO transmission channel matrix, i.e., the Frobenius norm and the condition number. The results show that the channel matrix shape characterized by the condition number dominates the BER if the Frobenius norm is smaller than 1. Furthermore, the proposed MIMO-OWC system employing a linearly-shaped arrangement of transmitters and receivers, shows to be more immune to the calibration error rather than the conventional square constellation optical modems. Moreover, the transmission of 100 Mbps data-rate and a BER lower than $10^{-4}$ could be successfully achieved at a 65 m communication range.
机译：在本文中，我们研究了新设计的4×4光无线多输入 - 多输出（MIMO-OWC）系统的性能基于线性形状的变送器和接收器，实现了长距离和高数据速率传输。为了突出选择对比较研究选择适当布置的重要性，考虑到传统的正方形和所提出的光学调制解调器的水平线性星座。使用MIMO传输信道矩阵的两个重要指标，即Frobenius规范和状态编号，在高达65米的距离处实验评估误码率（BER）的性能。结果表明，如果Frobenius规范小于1，则特征在于由条件数表征的通道矩阵形状在1.此外，采用发射器和接收器的线性布置的所提出的MIMO-OWC系统显示出更加免疫校准误差而不是传统的方形星座光学调制解调器。此外，传输100 Mbps数据速率和BER低于<内联公式XMLNS：MML =“http://www.w3.org/1998/math/mathml”xmlns：xlink =“http：// www .w3.org / 1999 / xlink“> $ 10 ^ { - 4} $ 可以在65米通信范围内成功实现。

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