期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 36, 期 20, 页码 5023-5029出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2018.2869022
关键词
Carrier-less amplitude and phase modulation; digital signal processing; modulation formats; pulse shaping; visible light communications
资金
- UK EPSRC [EP/P006280/1]
- Czech Science Foundation [GACR 17-17538S]
- Horizon 2020 MSC ITN Grant [764461]
- EPSRC [EP/P006280/1] Funding Source: UKRI
This paper proposes and experimentally demonstrates, for the first time, two new candidate pulse shapes for carrierless amplitude and phase modulation in the context of visible light communications. It is commonly accepted that the pulse shape at the heart of the Hilbert pair used to generate the required orthogonal signal spaces should he the square-root raised cosine. In this paper, we introduce two additional candidate pulse shapes, namely the first-order Xia pulse and the so-called better-than-Nyquist pulse. We demonstrate experimentally that the better-than-Nyquist pulse offers superior bit-error rate performance compared to the square-root raised cosine and Xia pulses under additive white Gaussian noise channel conditions, while offering lower computational complexity.
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