PAPR Reduction in OFDM System Based on SLM Technique
Amit Shukla1, Vineeta Saxena Nigam2
1Amit Shukla, Department of Electronic and Telecommunication, Institute of Technology, Rajiv Gandhi Proudyogiki University Vishwavidyalaya, Bhopal (M.P), India.
2Dr. Vineeta Saxena Nigam, Department of Electronic and Telecommunication, Institute of Technology, Rajiv Gandhi Proudyogiki University Vishwavidyalaya Bhopal (M.P), India.
Manuscript received on 10 September 2013 | Revised Manuscript received on 19 September 2013 | Manuscript Published on 30 September 2013 | PP: 45-48 | Volume-3 Issue-4, September 2013 | Retrieval Number: D1175093413/13©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: The term OFDM is a special type of FDM which has very vast application in the field of wired and wireless communication systems. In this paper we are discussing about the main problem of OFDM i.e. Peak to Average Power Ratio (PAPR) which affects the performance and efficiency of Power Amplifier. We also discuss various reduction techniques of PAPR for Selective Mapping (SLM) with Inverse Discrete Fourier Transform (IDFT) and Selective Mapping (SLM) with Inverse Fast Fourier Transform (IFFT). In this paper we are dealing with most promising reduction technique SLM with IFFT, its non-uniform phase factor for PAPR reduction in OFDM system. In addition, approximate expression for the complementary cumulative distribution function (CCDF) of the PAPR of the modified SLM technique is derived and compared with the simulation results.
Keywords: Frequency Division Multiplexing (FDM), Orthogonal Frequency Division Multiplexing (OFDM), Peak to Average Power Ratio (PAPR), Selective Mapping (SLM).
Scope of the Article: Adaptive Systems