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A novel low complexity high efficiency hybrid PAPR reduction for OFDM systems

Al-Hussaini, Khalid Taher Mohammed and Mohd Ali, Borhanuddin and Varahram, Pooria and Hashim, Shaiful Jahari (2015) A novel low complexity high efficiency hybrid PAPR reduction for OFDM systems. In: 2015 IEEE 12th Malaysia International Conference on Communications (MICC 2015), 23-25 Nov. 2015, Kuching, Sarawak, Malaysia. pp. 345-350.

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In this paper, we propose a novel hybrid multiplicative-additive technique to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. This technique consists of two inverse fast Fourier transform (IFFT) blocks. The input symbols of the first IFFT are the mapped symbols, whereas the input symbols of the second IFFT are the summations of the absolute value of the real part of the outer signal constellation points and zeros symbols. First, the output of the two IFFT blocks is partitioned into four subblocks, which are subsequently used to rearrange the subblocks with padding zeros in a specific manner. Then, a new optimization scheme is introduced, in which only a single two-phase sequence and four iterations needs to be applied. Numerical analysis shows that the hybrid proposed technique achieves better bit error rate (BER) and PAPR reduction performance than partial transmit sequences (PTS) multiplicative technique and tone reservation (TR) additive PAPR technique. The other salient feature of this scheme is that no side information (SI) is needed which increases transmission efficiency.

Item Type:Conference or Workshop Item (Paper)
Faculty or Institute:Faculty of Engineering
DOI Number:10.1109/MICC.2015.7725460
ID Code:52583
Deposited By: Nabilah Mustapa
Deposited On:07 Jun 2017 11:58
Last Modified:07 Jun 2017 11:58

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