Expanded Multiband Super-Nyquist CAP Modulation for Highly Bandlimited Organic Visible Light Communications
Expanded Multiband Super-Nyquist CAP Modulation for Highly Bandlimited Organic Visible Light Communications
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DOI：
10.1109/jsyst.2019.2939026
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发表时间：
2020-06
影响因子：
4.4
通讯作者：
P. Chvojka;P. Haigh;Alessandro Minotto;A. Burton;Petri Murto;Zewdneh Genene;W. Mammo;M. Andersson;Ergang Wang;Zabih Ghassemlooy;F. Cacialli;I. Darwazeh;S. Zvánovec
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文献类型：
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作者：
P. Chvojka;P. Haigh;Alessandro Minotto;A. Burton;Petri Murto;Zewdneh Genene;W. Mammo;M. Andersson;Ergang Wang;Zabih Ghassemlooy;F. Cacialli;I. Darwazeh;S. Zvánovec
在本文中，我们实验证明了一种新的扩展非正交多波段超级奈奎斯特无载波振幅和相位（m-ESCAP）调制用于带限有机可见光通信（VLC）系统。该方案具有与传统的m-CAP相同的带宽需求，但通过故意重叠破坏了子载波之间的正交性。在测量误码率（BER）性能、比特率和频谱效率方面，我们将m-ESCAP与传统的m-CAP和压缩的m-CAP （m-SCAP）进行了比较。我们表明，与m-CAP和m-SCAP相比，m-ESCAP系统的比特率分别提高了10%和20%，与m-CAP相比，频谱效率提高了20%。这些增益是以增加误码率为代价实现的，然而，误码率仍然低于7%的前向纠错限制。
In this article, we experimentally demonstrate a novel expanded nonorthogonal multiband super-Nyquist carrier-less amplitude and phase (m-ESCAP) modulation for bandlimited organic visible light communication (VLC) systems. The proposed scheme has the same bandwidth requirement as the conventional m-CAP while breaking the orthogonality between subcarriers by purposely overlapping them. We compare m-ESCAP with the conventional m-CAP and a compressed nonorthogonal version of m-CAP (m-SCAP) in terms of measured bit error rate (BER) performance, bit rates, and spectral efficiencies. We show that the m-ESCAP system offers improvement in the bit rate of $\sim$10% and 20% compared to the m-CAP and m-SCAP, respectively, and in the spectral efficiency of $\sim$20% compared to m-CAP. These gains are achieved at the cost of increased BER, which, however, remains below the 7% forward error correction limit.