Dynamic Range Constrained Clipping in Visible Light OFDM Systems with Brightness Control

Yu, Zhenhua; Baxley, Robert J.; Zhou, G. Tong

Title:

Dynamic Range Constrained Clipping in Visible Light OFDM Systems with Brightness Control

dc.contributor.author	Yu, Zhenhua
dc.contributor.author	Baxley, Robert J.
dc.contributor.author	Zhou, G. Tong
dc.contributor.corporatename	Georgia Institute of Technology. School of Electrical and Computer Engineering	en_US
dc.date.accessioned	2013-04-11T21:27:36Z
dc.date.available	2013-04-11T21:27:36Z
dc.date.issued	2013
dc.description.abstract	Visible light communication (VLC) systems can provide illumination and communication simultaneously by way of light emitting diodes (LEDs). The communication function is achieved by employing simple and low-cost intensity modulation and direct detection (IM/DD) schemes. Brightness control and flicker mitigation are two main challenges for the illumination function. Orthogonal frequency division multiplexing (OFDM) has been considered for VLC for its ability to boost data rates. However, OFDM waveforms have high peak-to-average power ratio, and will be clipped if its magnitude is beyond the dynamic range of LEDs. Clipping can cause the performance degradation of communication as well as illumination. In this paper, we will propose an iterative clipping method considering brightness control and flicker mitigation. We will investigate the performance in terms of error vector magnitude (EVM) as well as computational complexity. We will formulate the EVM minimization problem as a convex optimization problem to compare with the iterative clipping method.	en_US
dc.embargo.terms	null	en_US
dc.identifier.uri	http://hdl.handle.net/1853/46791
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.subject	Visible light communication (VLC)	en_US
dc.subject	Clipping effects	en_US
dc.subject	Orthogonal frequency division multiplexing (OFDM)	en_US
dc.title	Dynamic Range Constrained Clipping in Visible Light OFDM Systems with Brightness Control	en_US
dc.type	Text
dc.type.genre	Pre-print
dspace.entity.type	Publication
local.contributor.author	Zhou, G. Tong
local.contributor.corporatename	School of Electrical and Computer Engineering
local.contributor.corporatename	College of Engineering
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