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


Vol. 30,  No. 4, pp. 230-238, Apr.  2005


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  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 802.11a wireless local area network (WLAN) physical layer model. Numerical results show that the SMOPT scheme outperforms the TR scheme under various scenarios.

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  Cite this article

[IEEE Style]

S. s. Yoo, S. h. Yoon, S. y. Kim, I. h. Song, "Selective Mapping of Partial Tones (SMOPT) Scheme for PAR Reduction in OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 4, pp. 230-238, 2005. DOI: .

[ACM Style]

Seung soo Yoo, Seok ho Yoon, Sun yong Kim, and Iick ho Song. 2005. Selective Mapping of Partial Tones (SMOPT) Scheme for PAR Reduction in OFDM. The Journal of Korean Institute of Communications and Information Sciences, 30, 4, (2005), 230-238. DOI: .

[KICS Style]

Seung soo Yoo, Seok ho Yoon, Sun yong Kim, Iick ho Song, "Selective Mapping of Partial Tones (SMOPT) Scheme for PAR Reduction in OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 4, pp. 230-238, 4. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880