Variable m-CAP for bandlimited Visible Light Communications

Petr Chvojka; Stanislav Zvanovec; Khald Werfli; Paul Haigh; Zabih Ghassemlooy

doi:10.1109/ICCW.2017.7962624

Variable m-CAP for bandlimited Visible Light Communications

Petr Chvojka, Stanislav Zvanovec, Khald Werfli, Paul Haigh, Zabih Ghassemlooy

Research output: Chapter in Book/Report/Conference proceeding › Chapter

14 Citations (Scopus)

Abstract

The multi-band carrier-less amplitude and phase (m-CAP) modulation technique has been demonstrated as a significant candidate for use in visible light communication (VLC) systems, as spectral efficiency becomes ever more important. When employing m-CAP modulation, the signal bandwidth is typically split into m equally distributed subcarriers regardless of the -3 dB bandwidth. Thus, in this paper we investigate the impact of splitting the signal bandwidth into unequally spaced subcarriers on the m-CAP VLC system performance. We demonstrate that by allocating different bandwidths for individual subcarriers, we can achieve up to 36% improvement in data rate for 6-CAP (i.e. 6 subcarriers). We show that the higher the order of the variable m-CAP, the more significant improvement in data rate becomes even for a highly bandlimited VLC system when compared to the conventional m-CAP scheme.

Original language	English
Title of host publication	2017 IEEE International Conference on Communications Workshops (ICC Workshops)
Place of Publication	Piscataway
Publisher	IEEE
Pages	1-5
ISBN (Print)	978-1-5090-1526-9
DOIs	https://doi.org/10.1109/ICCW.2017.7962624
Publication status	E-pub ahead of print - 3 Jul 2017

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10.1109/ICCW.2017.7962624

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title = "Variable m-CAP for bandlimited Visible Light Communications",

abstract = "The multi-band carrier-less amplitude and phase (m-CAP) modulation technique has been demonstrated as a significant candidate for use in visible light communication (VLC) systems, as spectral efficiency becomes ever more important. When employing m-CAP modulation, the signal bandwidth is typically split into m equally distributed subcarriers regardless of the -3 dB bandwidth. Thus, in this paper we investigate the impact of splitting the signal bandwidth into unequally spaced subcarriers on the m-CAP VLC system performance. We demonstrate that by allocating different bandwidths for individual subcarriers, we can achieve up to 36% improvement in data rate for 6-CAP (i.e. 6 subcarriers). We show that the higher the order of the variable m-CAP, the more significant improvement in data rate becomes even for a highly bandlimited VLC system when compared to the conventional m-CAP scheme.",

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T1 - Variable m-CAP for bandlimited Visible Light Communications

AU - Chvojka, Petr

AU - Zvanovec, Stanislav

AU - Werfli, Khald

AU - Haigh, Paul

AU - Ghassemlooy, Zabih

PY - 2017/7/3

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AB - The multi-band carrier-less amplitude and phase (m-CAP) modulation technique has been demonstrated as a significant candidate for use in visible light communication (VLC) systems, as spectral efficiency becomes ever more important. When employing m-CAP modulation, the signal bandwidth is typically split into m equally distributed subcarriers regardless of the -3 dB bandwidth. Thus, in this paper we investigate the impact of splitting the signal bandwidth into unequally spaced subcarriers on the m-CAP VLC system performance. We demonstrate that by allocating different bandwidths for individual subcarriers, we can achieve up to 36% improvement in data rate for 6-CAP (i.e. 6 subcarriers). We show that the higher the order of the variable m-CAP, the more significant improvement in data rate becomes even for a highly bandlimited VLC system when compared to the conventional m-CAP scheme.

KW - carrier-less amplitude and phase modulation

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BT - 2017 IEEE International Conference on Communications Workshops (ICC Workshops)

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Variable m-CAP for bandlimited Visible Light Communications

Abstract

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