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Selective Mapping of Partial Tones (SMOPT) Scheme for PAR Reduction in OFDM Systems  

Yoo Seung soo (건국대학교 전자공학부)
Yoon Seok ho (성균관대학교 정보통신공학부)
Kim Sun yong (건국대학교 전자공학부)
Song Iick ho (한국과학기술원 전자전산학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.4C, 2005 , pp. 230-238 More about this Journal
Abstract
An orthogonal frequency division multiplexing (OFDM) system consists of a number of independently modulated subcarriers and, thus, a high peak-to-average power ratio (PAR) can occur when the subcarriers are added coherently. The high PAR brings such disadvantages as an increased complexity of the analog-to-digital (ADC) and digital-to-analog (DAC) converters and a reduced efficiency of the radio frequency (RF) power amplifier. In this paper, we propose a novel PAR reduction scheme called selective mapping of partial tones (SMOPT). The SMOPT scheme has a reduced complexity, lower sensitivity to peak reduction tones (PRT) positions, and a shorter processing time as compared with the conventional tone reservation (TR) scheme. The performance of the SMOPT scheme is analyzed based on the IEEE 802.1la wireless local area network(WLAM) physical layer model. Numerical results show that the SMOPT scheme outperforms the TR scheme under various scenarios.
Keywords
OFDM; PAR; PRT; TR; SMOPT;
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  • Reference
1 R. Prasad and R. V. Nee, OFDM for Wireless Multimedia Communications, Artech House, Boston, 2000
2 L.I. Kronsjo, Algorithms Their Complexity and Efficiency, John Wiley and Sons, Chichester, England, 1979
3 유승수, 윤석호, 김선용, 'OFDM 시스템의 PAR 감소를 위한 SMOPT 기법,' 한국통신학회 추계종합학술대회, 337쪽, 대전, 2004년
4 J. Telledo and J. M. Cioffi, 'Efficient algorithms for reducing PAR in multicarrier systems,' Proc. of IEEE International Symposium on Information Theory, pp. 191, Cambrige, MA, 1998   DOI
5 박철훈, 송익호, 남동경, 확률과정, 생능출판사, 69-134쪽, 2004년
6 S. E. Park, S. R. Yun, J. Y. Kim, D. S. Park, and P. Joo, 'Tone reservation method for PAPR reduction scheme,' IEEE802. 16e-03/60r1, 2003.
7 D. Z. Du and K. I. Ko, Theory of Computational Complexity, John Wiley and Sons, New York, 2000