Faster-Than-Nyquist Signaling With Index Modulation
Faster-Than-Nyquist Signaling With Index Modulation
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DOI：
10.1109/lwc.2017.2724517
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发表时间：
2017-07
影响因子：
6.3
通讯作者：
T. Ishihara;S. Sugiura
中科院分区：
文献类型：
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作者：
T. Ishihara;S. Sugiura
在这封信中，我们提出了一种新的快于奈奎斯特（FTN）传输方案依赖于时域单载波指数调制（IM）的概念。在所提出的具有IM的FTN（FTN-IM）发射机中，时域FTN符号的子集被激活，其中激活的符号的组合进一步传递到经典幅度相移键控的附加信息。由于稀疏FTN-IM信令的明确益处，以有效的方式减轻了特定于FTN的符号间干扰，因此获得了比常规FTN对应物更高的频谱效率。此外，我们的FTN-IM接收机的低复杂度噪声白化频域均衡的发展。为了证明所提出的FTN-IM方案的性能优势，在传统的FTN对应，我们表明，建议FTN-IM信令的最小欧几里德距离高于传统的FTN信令，同时提供他们的数值性能比较的错误率。
In this letter, we propose a novel faster-than-Nyquist (FTN) transmission scheme relying on the time-domain single-carrier index-modulation (IM) concept. In the proposed FTN with IM (FTN-IM) transmitter, a subset of time-domain FTN symbols are activated, where the combination of the activated symbols conveys additional information further to the classic amplitude phase shift keying. Owing to the explicit benefit of sparse FTN-IM signaling, the FTN-specific inter-symbol interference is mitigated in an effective manner, hence attaining a higher spectral efficiency than the conventional FTN counterpart. Furthermore, a low-complexity noise-whitening frequency-domain equalization is developed for our FTN-IM receiver. In order to demonstrate the performance advantage of the proposed FTN-IM scheme over the conventional FTN counterpart, we show that a minimum Euclidean distance of proposed FTN-IM signaling is higher than that of the conventional FTN signaling, while providing their numerical performance comparisons in terms of error rates.