A Simple, High-Performance Space–Time Code for MIMO Backscatter Communications
A Simple, High-Performance Space–Time Code for MIMO Backscatter Communications
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DOI：
10.1109/jiot.2020.2973048
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发表时间：
2020-02
影响因子：
10.6
通讯作者：
Ieee Chen He Member;Huixu Luan;Xiaoya Li;Cunyan Ma;Luyang Han;Ieee Z. Jane Wang Fellow
中科院分区：
文献类型：
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作者：
Ieee Chen He Member;Huixu Luan;Xiaoya Li;Cunyan Ma;Luyang Han;Ieee Z. Jane Wang Fellow
在这篇文章中，我们提出了一个$2 \times 2$空时码（STC）的反向散射通信。有趣的是，虽然建议的代码执行比传统的信道中的经典Alamanti码差得多，它实现了几乎相同的性能作为Alamanti码在反向散射信道。更重要的是，它具有相当低的标签电路复杂性，这在硬件受限的反向散射设备中更优选。本文指出，常规信道和后向散射信道的“好STC”集合并不严重重叠，可能存在许多以前在常规信道中被忽略和未报道的更简单的STC，它们具有高性能，特别是在后向散射信道中。
In this article, we propose a $2 \times 2$ space–time code (STC) for backscatter communications. The interesting thing is that although the proposed code performs much worse than the classical Alamouti code in conventional channels, it achieves almost the same performance as the Alamouti code in backscatter channels. More importantly, it has a considerably lower tag circuit complexity, which is more preferred in hardware-limited backscatter devices. This article indicates that the sets of “good STCs” for conventional channels and backscatter channels are not heavily overlapped, and there may exist many simpler STCs, which were previously ignored and not reported in conventional channels, have high performance, particularly, in backscatter channels.