Implementation of Selected Mapping and Clipping for PAPR Reduction in OFDM Communication Systems
Haris P. A1, Sen Jose2
1Haris P. A, Dept. of Electronics and Communication Engg. College of Engineering Trivandrum, Kerala, India.
2Sen Jose, Dept. of Electronics and Communication Engg. College of Engineering Trivandrum, Kerala, India.
Manuscript received on January 25, 2014. | Revised Manuscript received on February 15, 2014. | Manuscript published on February 28, 2014. | PP: 214-217 | Volume-3, Issue-3, February 2014. | Retrieval Number: B2396123213/2013©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: In the recent times, Orthogonal Frequency Division Multiplexing (OFDM) has been under intense research for broadband wireless transmission due to its robustness against multi-path fading. In this paper, a joint selected mapping and clipping method is proposed to reduce the peak-to-average ratio of OFDM signal. Here cyclically shifted mapping data is used to generate a set of data blocks which represent the original information. This will increase the data rate when compared with the conventional SLM technique. Then clipping operation has done to reduce the PAPR further. Simulation results show that the proposed scheme may obtain significant PAPR reduction while maintaining good performance in the BER compared to other methods.
Keywords: (OFDM), SLM, PAPR, BER.