IEICE TRANSACTIONS on Communications
Low-Complexity SLM and PTS Schemes for PAPR Reduction in OFDM Systems
Summary :
One major drawback of orthogonal frequency-division multiplexing is the high peak-to-average power ratio (PAPR) of the output signal. The selected mapping (SLM) and partial transmit sequences (PTS) methods are two promising techniques for PAPR reduction. However, to generate a set of candidate signals, these techniques need a bank of inverse fast Fourier transforms (IFFT's) and thus require high computational complexity. In this paper, we propose two low-complexity multiplication-free conversion processes to replace the IFFT's in the SLM method, where each conversion process for an N-point IFFT involves only 3N complex additions. Using these proposed conversions, we develop several new SLM schemes and a combined SLM & PTS method, in which at least half of the IFFT blocks are reduced. Computer simulation results show that, compared to the conventional methods, these new schemes have approximately the same PAPR reduction performance under the same number of candidate signals for transmission selection.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E92-B No.7 pp.2420-2425
- Publication Date
- 2009/07/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E92.B.2420
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
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Keyword
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Chin-Liang WANG, Yuan OUYANG, Ming-Yen HSU, "Low-Complexity SLM and PTS Schemes for PAPR Reduction in OFDM Systems" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 7, pp. 2420-2425, July 2009, doi: 10.1587/transcom.E92.B.2420.
Abstract: One major drawback of orthogonal frequency-division multiplexing is the high peak-to-average power ratio (PAPR) of the output signal. The selected mapping (SLM) and partial transmit sequences (PTS) methods are two promising techniques for PAPR reduction. However, to generate a set of candidate signals, these techniques need a bank of inverse fast Fourier transforms (IFFT's) and thus require high computational complexity. In this paper, we propose two low-complexity multiplication-free conversion processes to replace the IFFT's in the SLM method, where each conversion process for an N-point IFFT involves only 3N complex additions. Using these proposed conversions, we develop several new SLM schemes and a combined SLM & PTS method, in which at least half of the IFFT blocks are reduced. Computer simulation results show that, compared to the conventional methods, these new schemes have approximately the same PAPR reduction performance under the same number of candidate signals for transmission selection.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.2420/_p
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@ARTICLE{e92-b_7_2420,
author={Chin-Liang WANG, Yuan OUYANG, Ming-Yen HSU, },
journal={IEICE TRANSACTIONS on Communications},
title={Low-Complexity SLM and PTS Schemes for PAPR Reduction in OFDM Systems},
year={2009},
volume={E92-B},
number={7},
pages={2420-2425},
abstract={One major drawback of orthogonal frequency-division multiplexing is the high peak-to-average power ratio (PAPR) of the output signal. The selected mapping (SLM) and partial transmit sequences (PTS) methods are two promising techniques for PAPR reduction. However, to generate a set of candidate signals, these techniques need a bank of inverse fast Fourier transforms (IFFT's) and thus require high computational complexity. In this paper, we propose two low-complexity multiplication-free conversion processes to replace the IFFT's in the SLM method, where each conversion process for an N-point IFFT involves only 3N complex additions. Using these proposed conversions, we develop several new SLM schemes and a combined SLM & PTS method, in which at least half of the IFFT blocks are reduced. Computer simulation results show that, compared to the conventional methods, these new schemes have approximately the same PAPR reduction performance under the same number of candidate signals for transmission selection.},
keywords={},
doi={10.1587/transcom.E92.B.2420},
ISSN={1745-1345},
month={July},}
Copy
TY - JOUR
TI - Low-Complexity SLM and PTS Schemes for PAPR Reduction in OFDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2420
EP - 2425
AU - Chin-Liang WANG
AU - Yuan OUYANG
AU - Ming-Yen HSU
PY - 2009
DO - 10.1587/transcom.E92.B.2420
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2009
AB - One major drawback of orthogonal frequency-division multiplexing is the high peak-to-average power ratio (PAPR) of the output signal. The selected mapping (SLM) and partial transmit sequences (PTS) methods are two promising techniques for PAPR reduction. However, to generate a set of candidate signals, these techniques need a bank of inverse fast Fourier transforms (IFFT's) and thus require high computational complexity. In this paper, we propose two low-complexity multiplication-free conversion processes to replace the IFFT's in the SLM method, where each conversion process for an N-point IFFT involves only 3N complex additions. Using these proposed conversions, we develop several new SLM schemes and a combined SLM & PTS method, in which at least half of the IFFT blocks are reduced. Computer simulation results show that, compared to the conventional methods, these new schemes have approximately the same PAPR reduction performance under the same number of candidate signals for transmission selection.
ER -
English
