PAPR Reduction in O-OFDM using Non-Linear Companding Scheme
Subrateshvar Kumar Dwivedi1, Prabhat Patel2
1Subrateshvar Kumar Dwivedi, Department of Electronics and Communication Engineering, Indian Institute of Technology (IIT), Kanpur (Uttar Pradesh), India.
2Dr. Prabhat Patel, Department of Electronics and Communication Engineering, Indian Institute of Technology (IIT), Kanpur (Uttar Pradesh), India.
Manuscript received on 10 December 2017 | Revised Manuscript received on 18 December 2017 | Manuscript Published on 30 December 2017 | PP: 129-133 | Volume-7 Issue-2, December 2017 | Retrieval Number: B5259127217/17©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Visible light communication is hot and novel area of research in indoor wireless applications. In VLC, information is transmitted using LEDs; therefore uni-polar signals are used. OFDM technology is used in wireless communication very efficiently for data transfer, however, in VLC OFDM cannot be directly applied, due to uni-polar nature. The VLC counterpart of OFDM is known as O-OFDM where only positive part of time domain signal is transmitted. However, O-OFDM also suffers from PAPR. This paper discusses PAPR reduction technique based on non-linear companding scheme, along with clipping schemes.
Keywords: VLC, OFDM, and PAPR
Scope of the Article: Autonomous Robots