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Advanced SLM scheme based on discrete forest optimization algorithm for PAPR minimization in UFMC waveform

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Abstract

Inherent multicarrier transmission mechanism of the universal filtered multicarrier (UFMC) waveform engenders the problem of high peak-to-average power ratio (PAPR). Since it is impossible for a nonlinear high power amplifier (HPA) to execute a distortionless amplification unless the PAPR of transmission signal is below an acceptable level, eliminating the aforementioned PAPR drawback in UFMC waveform is so critical for smooth communication. With this in mind, we developed a new selective mapping (SLM) scheme based on discrete forest optimization algorithm (DFOA) for the UFMC waveform. The related scheme was created by embedding the DFOA into the conventional SLM with the intention of optimizing the values of phase factors by which the phase rotation process is carried out in frequency domain to reduce the PAPR of eventual time domain signal attained from the SLM output. It is confirmed via the simulations that, remarkable PAPR improvements are achieved through the DFOA-SLM scheme in the UFMC signal thanks to the DFOA-supported search for the optimal sequence of phase factors instead of classical random search strategy inherent in the conventional SLM method.

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Acknowledgment

This work was supported by the Scientific Research Projects Coordinating Unit of Erciyes University [Grant Number: FDK-2018-8463].

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, Erciyes University, Kayseri, Turkey

    Necmi Taşpınar

  2. Department of Electrical and Electronics Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey

    Şakir Şimşir

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  1. Necmi Taşpınar
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  2. Şakir Şimşir
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Correspondence to Şakir Şimşir.

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Taşpınar, N., Şimşir, Ş. Advanced SLM scheme based on discrete forest optimization algorithm for PAPR minimization in UFMC waveform. Wireless Netw 27, 1353–1368 (2021). https://doi.org/10.1007/s11276-020-02515-9

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