CURVE is the Institutional Repository for Coventry University Multi-band carrier-less amplitude and phase modulation for bandlimited visible light communications systems

Visible light communications (VLC) is a technology with enormous potential for a wide range of applications within next generation transmission and broadcasting technologies. VLC offers simultaneous illumination and data communications by intensity modulating the optical power emitted by lightemitting diodes (LEDs) operating in the visible range of the electromagnetic spectrum (~370 – 780 nm). The major challenge in VLC systems to date has been in improving transmission speeds, considering the low bandwidths available with commercial LED devices. Thus, to improve the spectral usage, the research community has increasingly turned to advanced modulation formats such as orthogonal frequency division multiplexing (OFDM). In this article we introduce a new modulation scheme into the VLC domain; multi-band carrierless amplitude and phase modulation (m-CAP) and describe in detail its performance in terms of bandlimited systems.

可见光通信（VLC）是一种在下一代传输和广播技术中具有广泛应用巨大潜力的技术。VLC通过对在电磁光谱可见范围（约370 - 780纳米）内工作的发光二极管（LED）发出的光功率进行强度调制，实现同时照明和数据通信。到目前为止，考虑到商用LED器件可用的带宽较低，VLC系统面临的主要挑战是提高传输速度。因此，为了提高频谱利用率，研究界越来越多地转向先进的调制格式，如正交频分复用（OFDM）。在本文中，我们将一种新的调制方案引入VLC领域；多频带无载波幅度和相位调制（m - CAP），并详细描述其在带宽受限系统方面的性能。