J. Eur. Opt. Soc.-Rapid Publ.
Volume 13, Number 1, 2017
|Number of page(s)||6|
|Published online||16 November 2017|
Research on modified selected mapping technique for PAPR reduction and reception performance improvement in 8QAM-OFDM optical access systems
Faculty of Engineering, Shanghai Polytechnic University, 201209, Shanghai, China
Accepted: 3 November 2017
Background: Orthogonal frequency division multiplexing has been regarded as one of the promising technologies for the optical access systems application. However, high peak-to-average power ratio will cause the signal distortion and enable the used amplifier to operate in nonlinear section.
Methods: In this paper, a modified selected mapping technique is introduced for reducing the peak-to-average power ratio and enhancing reception performance of the downstream 8QAM-OFDM signals in optical access systems.
Results: Compared with the traditional selected mapping technique, the PAPR value of 8QAM-OFDM optical downstream signals with 128 subcarriers is reduced by almost 2 dB using modified SLM when the complementary cumulative distribution function probability value is 10−2. Moreover, the bit error rate performance will be improved, while 10Gbit/s 8QAM-OFDM optical downlink signals are transmitted over single mode fiber with different access length.
Conclusions: Hence, the proposed scheme becomes more efficient for the future optical orthogonal frequency division multiplexing access systems.
Key words: Optical access system / Orthogonal frequency division multiplexing / Modified selected mapping / Peak-to-average power ratio / Bit error rate
© The Author(s) 2017
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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