Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can Visible Light Communications Provide Gb/s Service?   Visible light communications (VLC) that use the infrastructure of the indoor
illumination system have been envisioned as a compact, safe, and green
alternative to WiFi for the downlink of an indoor wireless mobile communication
system. Although the optical spectrum is typically well-suited to high
throughput applications, combining communications with indoor lighting in a
commercially viable system imposes severe limitations both in bandwidth and
received power. Clever techniques are needed to achieve Gb/s transmission, and
to do it in a cost effective manner so as to successfully compete with other
high-capacity alternatives for indoor access, such as millimeter-wave
radio-frequency (RF). This article presents modulation schemes that have the
potential to overcome the many challenges faced by VLC in providing multi Gb/s
indoor wireless connectivity.

17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin