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Low-complexity PAPR reduction scheme selective mapping cascading improved μ Law companding in CO-OFDM system

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Abstract

In this paper, a hybrid technique using a low complexity selective mapping (LCSLM) cascading an improved μ law companding scheme (LCSLM-μ) is proposed to reduce the peak-to-average power ratio (PAPR) and complexity in coherent optical orthogonal frequency division multiplexing system. The simulation results show that at the complementary cumulative distribution function of \({10}^{{ - 4}}\), the PAPRs of the scheme LCSLM-μ(D = 4,m = 3,\(\mu { = 1}\)) are optimized by 1.488 dB and 1.166 dB compared those of LCSLM (D = 4) and companding(\(\mu { = 1}\)) schemes, respectively. Meanwhile, when the bit error rate (BER) is 10–3, the optical signal to noise ratios (OSNRs) of the LCSLM-μ(D = 4,m = 3,\(\mu { = 1}\)) scheme are optimized by 6.61 dB and 7.31 dB compared with those of companding (\(\mu { = 1}\)) and improved \(\mu\) law companding (m = 3, μ = 1) schemes, respectively. The computational complexity and PAPR reduction performance of various schemes, such as traditional SLM, LCSLM, improved law companding and LCSLM-μ schemes are analyzed respectively. The simulation results show that the LCSLM-\(\mu\) (D = 4, m = 3, μ = 1)provides better PAPR reduction performance. When the alternative signal is 16, compared with the traditional SLM algorithm, the LCSLM-\(\mu\)(D = 4, m = 3, \(\mu { = 1}\)) scheme reduces the computational complexity of complex addition and complex multiplication by 53.1% and 45%, respectively. This paper provides a choice for a trade-off among PAPR reduction, BER and reduced complexity.

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Funding

This work is supported by the National Youth Foundation of China [Grant Number 11704283]; Natural Science Foundation of Tianjin City [Grant Number 18JCYBJC86300].

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Authors and Affiliations

  1. Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China

    Tingting Li, Zhengrong Tong, Weihua Zhang, Ye Liu & Mingxu Wang

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Correspondence to Zhengrong Tong.

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Li, T., Tong, Z., Zhang, W. et al. Low-complexity PAPR reduction scheme selective mapping cascading improved μ Law companding in CO-OFDM system. Wireless Pers Commun 122, 861–876 (2022). https://doi.org/10.1007/s11277-021-08929-8

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