PAPR reduction technique by inserting a power-concentrated subcarrier for CO-OFDM
- Authors
- Kang, Sungyong; Lee, Jaehoon; Jeong, Jichai
- Issue Date
- 1-9월-2015
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- OPTICS COMMUNICATIONS, v.350, pp.119 - 123
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS COMMUNICATIONS
- Volume
- 350
- Start Page
- 119
- End Page
- 123
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/92512
- DOI
- 10.1016/j.optcom.2015.04.010
- ISSN
- 0030-4018
- Abstract
- Optical orthogonal frequency division multiplexing (OFDM) signals suffer from the nonlinear effects of an electric-to-optical modulator and fiber due to high peak to average power ratio (PAPR) characteristics. We propose a power-concentrated subcarrier method for use in OFDM systems to reduce PAPR of the OFDM signal without increasing system complexity or side information. The PAPR can be reduced by simply inserting a power-concentrated subcarrier (PCS) to replace the zero in the end of the signal spectrum at the zero padding stage. The simulation is performed with a conventional CO-OFDM transmission system with a PCS under dispersion and a nonlinear effective fiber to estimate PAPR using complementary cumulative distribution function (CCDF), error vector magnitude (EVM), and bit-error-rate (BER) characteristics. After a 2000-km transmission, the conventional CO-OFDM had an optimal fiber launch power of 6 dBm from the BER characteristics. In contrast, the proposed CO-OFDM with a PCS improves transmission performance in terms of log(BER) as much as -0.67 by an increased fiber launch power of -1 dBm with 60% concentrated-power of the PCS. (C) 2015 Elsevier B.V. All rights reserved.
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Collections - Graduate School > Department of Computer Science and Engineering > 1. Journal Articles
- Graduate School > Department of Brain and Cognitive Engineering > 1. Journal Articles
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