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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chaopei Wu Hua Zhang Wei Xu |
| Copyright Year | 2014 |
| Description | Author affiliation: Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China (Chaopei Wu; Hua Zhang; Wei Xu) |
| Abstract | DFT-Spread OFDM has been well studied in radio frequency (RF) systems thanks to its effectiveness in reducing the peak-to-average power ratio (PAPR). However, due to the inherent positive real signal constraint in visible light communications (VLC), the implementation of DFT-Spread OFDM in VLC faces some different challenges with respect to its high PAPR. This paper presents an LED array assisted visible light communication system using DFT-Spread OFDM. With this technique, theoretical analysis are firstly derived to help characterize the system PAPR reduction in VLC systems. Specifically, two different subcarrier allocation modes namely localized DFT-Spread and interleaved DFT-Spread OFDM are explicitly studied with their time domain signal expressions. Moreover, based on the results, detailed comparisons of DFT-Spread OFDM in terms of PAPR reduction are made for VLC and RF systems. Simulation results show that the proposed system not only leads to a reduced PAPR, but also achieves a performance gain in BER without any loss of system transmission rate. |
| Starting Page | 3325 |
| Ending Page | 3330 |
| File Size | 377446 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781479920037 |
| DOI | 10.1109/ICC.2014.6883834 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-06-10 |
| Publisher Place | Australia |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Peak to average power ratio Light emitting diodes Radio frequency Time-domain analysis Discrete Fourier transforms Arrays peak-to-average power ratio (PAPR) Visible light communication (VLC) DFT-Spread OFDM LED arrary |
| Content Type | Text |
| Resource Type | Article |
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