Abstract
A system called Orthogonal frequency division multiplexing (OFDM) is frequently applied in communication system because of its advantages in terms of high spectral performance, resistance to inter-symbol interferences (ISIs), fast implementation, and multipath transmission. Unfortunately, OFDM signals generate a high peak-to-average power ratio (PAPR) and that is the main weakness in this system. In this project, Partial Transmit Sequence (PTS) optimization using the of Firefly Algorithm (FA) is applied to decrease the high PAPR. The analysis of PAPR minimization by the proposed method will be carried out by using different number of subblocks, subcarriers and iterations. Two different modulation types will be used which are 16 Quadrature Amplitude Modulation (QAM) and Quadrature Phase Shift Keying (QPSK). The CCDF and BER plots are evaluated at the end of the process. The performance of OFDM signal and PTS-FA through AWGN channel is examined. The result of this project has shown that conventional PTS only managed to reduce PAPR values by 4 - 5 dB, while using FA, it effectively reduced PAPR by 7 - 10 dB. The computational complexity is observed from simulation of different iterations and low search complexity is preserved by adjusting the FF algorithm parameters.
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Acknowledgements
This project was supported by “Ministry of Higher Education Malaysia for Fundamental Research Grant Scheme with project code FRGS/1/2020/TKO/USM/02/21.
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Husin, H., Mohd-Mokhtar, R., Wahab, A.A.A. (2022). On the Partial Transmit Sequences (PTS) Optimization Using Firefly Algorithm for PAPR Reduction in OFDM Systems. In: Khairuddin, I.M., et al. Enabling Industry 4.0 through Advances in Mechatronics. Lecture Notes in Electrical Engineering, vol 900. Springer, Singapore. https://doi.org/10.1007/978-981-19-2095-0_19
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DOI: https://doi.org/10.1007/978-981-19-2095-0_19
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