Abstract
In this paper, peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) is minimized by a new technique called as DHT precoder and A-law companding with variable parameters. This technique is implemented in two stages for PAPR reduction of OFDM system. In first stage, DHT precoder is used to spread the symbols and PAPR of this OFDM system is transformed into signal carrier modulation system which has a smaller amount of PAPR compared to multicarrier modulation system. In second stage, A-law companding is used to compressing large peaks and then, PAPR reduces. Therefore, proposed technique minimizes PAPR up to 4 dB (A = 10) and 2.98 dB (A = 30) which is better than DHT precoder, DFT precoder and A-law companding effectively and also preserves bit error rate (BER) performance.
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Yadav, A.K., Dubey, D., Prajapati, Y.K. (2021). Minimization of Peak-to-Average Power Ratio in DHT Precoded OFDM System by A-Law Companding. In: Harvey, D., Kar, H., Verma, S., Bhadauria, V. (eds) Advances in VLSI, Communication, and Signal Processing. Lecture Notes in Electrical Engineering, vol 683. Springer, Singapore. https://doi.org/10.1007/978-981-15-6840-4_51
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DOI: https://doi.org/10.1007/978-981-15-6840-4_51
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