基于RF反射镜的媒体调制
On Media-based Modulation using RF Mirrors
摘要：
基于媒体的调制（MBM）是最近提出的调制方案，其在发射天线处使用射频（RF）镜，以便基于它们的开/关状态来创建不同的信道衰落实现。这些复杂的衰落实现构成调制字母表。MBM具有增加的频谱效率和性能的优点。在本文中，我们研究了一些物理层技术应用于MBM时的性能。特别地，我们研究了具有广义空间调制（GSM）的$i)$ MBM、具有基于欧几里德距离（ED）的度量的镜像激活模式（MAP）选择的$ii)$ MBM以及具有基于反馈的相位补偿和星座旋转的$iii)$ MBM的性能。我们的研究结果表明，在相同的频谱效率，GSM-MBM可以实现更好的性能相比，MIMO-MBM。此外，它被发现，MBM与ED为基础的MAP选择的结果在改善的比特错误性能，相位补偿和MBM星座旋转增加的ED之间的MBM星座点，并改善性能显着。我们还分析了基于ED的MAP选择方案和相位补偿和星座旋转（PC-CR）方案所实现的分集阶数。通过仿真验证了分析预测的分集阶数。
英文摘要：
Media-based modulation (MBM) is a recently proposed modulation scheme which uses radio frequency (RF) mirrors at the transmit antenna(s) in order to create different channel fade realizations based on their ON/OFF status. These complex fade realizations constitute the modulation alphabet. MBM has the advantage of increased spectral efficiency and performance. In this paper, we investigate the performance of some physical layer techniques when applied to MBM. Particularly, we study the performance of $i)$ MBM with generalized spatial modulation (GSM), $ii)$ MBM with mirror activation pattern (MAP) selection based on an Euclidean distance (ED) based metric, and $iii)$ MBM with feedback based phase compensation and constellation rotation. Our results show that, for the same spectral efficiency, GSM-MBM can achieve better performance compared to MIMO-MBM. Also, it is found that MBM with ED-based MAP selection results in improved bit error performance, and that phase compensation and MBM constellation rotation increases the ED between the MBM constellation points and improves the performance significantly. We also analyze the diversity orders achieved by the ED-based MAP selection scheme and the phase compensation and constellation rotation (PC-CR) scheme. The diversity orders predicted by the analysis are validated through simulations.
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