An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals

Suckchel YANG; Yoan SHIN

doi:10.1093/ietfec/e91-a.1.422

An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals

Suckchel YANG, Yoan SHIN

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We propose an adaptive SLM scheme based on peak observation for PAPR reduction of OFDM signals. The proposed scheme is composed of three steps: peak scaling, sequence selection, and SLM procedures. In the first step, the peak signal samples in the IFFT outputs of the original input sequence are scaled down. In the second step, the sub-carrier positions where the power difference between the original input sequence and the FFT output of the scaled signal is large, are identified. Then, the phase sequences having the maximum number of phase-reversed sequence words only for these positions are selected. Finally, the generic SLM procedure is performed by using only the selected phase sequences for the original input sequence. Simulation results show that the proposed scheme significantly reduce the complexity in terms of IFFT and PAPR calculation than the conventional SLM, while maintaining the PAPR reduction performance.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.1 pp.422-425

Publication Date: 2008/01/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e91-a.1.422

Type of Manuscript: LETTER

Category: Communication Theory and Signals

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Suckchel YANG, Yoan SHIN, "An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals" in IEICE TRANSACTIONS on Fundamentals, vol. E91-A, no. 1, pp. 422-425, January 2008, doi: 10.1093/ietfec/e91-a.1.422.
Abstract: We propose an adaptive SLM scheme based on peak observation for PAPR reduction of OFDM signals. The proposed scheme is composed of three steps: peak scaling, sequence selection, and SLM procedures. In the first step, the peak signal samples in the IFFT outputs of the original input sequence are scaled down. In the second step, the sub-carrier positions where the power difference between the original input sequence and the FFT output of the scaled signal is large, are identified. Then, the phase sequences having the maximum number of phase-reversed sequence words only for these positions are selected. Finally, the generic SLM procedure is performed by using only the selected phase sequences for the original input sequence. Simulation results show that the proposed scheme significantly reduce the complexity in terms of IFFT and PAPR calculation than the conventional SLM, while maintaining the PAPR reduction performance.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.1.422/_p

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@ARTICLE{e91-a_1_422,
author={Suckchel YANG, Yoan SHIN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals},
year={2008},
volume={E91-A},
number={1},
pages={422-425},
abstract={We propose an adaptive SLM scheme based on peak observation for PAPR reduction of OFDM signals. The proposed scheme is composed of three steps: peak scaling, sequence selection, and SLM procedures. In the first step, the peak signal samples in the IFFT outputs of the original input sequence are scaled down. In the second step, the sub-carrier positions where the power difference between the original input sequence and the FFT output of the scaled signal is large, are identified. Then, the phase sequences having the maximum number of phase-reversed sequence words only for these positions are selected. Finally, the generic SLM procedure is performed by using only the selected phase sequences for the original input sequence. Simulation results show that the proposed scheme significantly reduce the complexity in terms of IFFT and PAPR calculation than the conventional SLM, while maintaining the PAPR reduction performance.},
keywords={},
doi={10.1093/ietfec/e91-a.1.422},
ISSN={1745-1337},
month={January},}

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TY - JOUR
TI - An Adaptive SLM Scheme Based on Peak Observation for PAPR Reduction of OFDM Signals
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 422
EP - 425
AU - Suckchel YANG
AU - Yoan SHIN
PY - 2008
DO - 10.1093/ietfec/e91-a.1.422
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2008
AB - We propose an adaptive SLM scheme based on peak observation for PAPR reduction of OFDM signals. The proposed scheme is composed of three steps: peak scaling, sequence selection, and SLM procedures. In the first step, the peak signal samples in the IFFT outputs of the original input sequence are scaled down. In the second step, the sub-carrier positions where the power difference between the original input sequence and the FFT output of the scaled signal is large, are identified. Then, the phase sequences having the maximum number of phase-reversed sequence words only for these positions are selected. Finally, the generic SLM procedure is performed by using only the selected phase sequences for the original input sequence. Simulation results show that the proposed scheme significantly reduce the complexity in terms of IFFT and PAPR calculation than the conventional SLM, while maintaining the PAPR reduction performance.
ER -