PAPR Reduction in OFDM

Ritu Mor

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. Partial Transmit Sequence (PTS) is an attractive scheme for PAPR reduction without distortion, but to obtain preferable PAPR performance it needs many Inverse Fast Fourier Transforms (IFFTs) which results in high complexity. In this paper, a single IFFT block is implanted in to PTS technique for reduction of PAPR in OFDM. The scheme is very efficient and avoids the use of any extra IFFTs as was done in PAPR reduction by ordinary PTS technique.

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References


Shieh William, Djordjevic Ivan, “OFDM for Optical Communications,” Elsevier, chap 2, pp 31-44, 20102. Lingyin Wang; Ju Liu, “PAPR Reduction of OFDM Signals by PTS With Grouping and Recursive Phase Weighting Methods”, IEEE Trans. On Broadcasting, vol.57, no.2, pp-299-306, Jun 2011

Jun Hou, JianhuaGe, Jing Li, “Peak-to-Average Power Ratio Reduction of OFDM Signals Using PTS Scheme With Low Computational Complexity”, IEEE Transactions on Broadcasting, vol. 57, no. 1, pp- 143-148, March 2011

Sheng-Ju Ku, Chin-Liang Wang, Chiuan-Hsu Chen “A Reduced-Complexity PTS-Based PAPR Reduction Scheme for OFDM Systems”, IEEE Transactions on Wireless Communications, vol. 9, no. 8, pp- 2455-2460, Aug 2010

Haibo Li, Tao Jiang, Yang Zhou, “A Novel Subblock Linear Combination Scheme for Peak-to-Average Power Ratio Reduction in OFDM Systems”, IEEE Transactions on Broadcasting, vol. 58, no. 3, pp- 360-369, Sept 2012




DOI: https://doi.org/10.23956/ijermt.v6i6.272

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