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access icon free Novel RAPF scheme and its performance of PAPR reduction and BER in FBMC-OQAM system

© The Institution of Engineering and Technology
Received 12/09/2018, Accepted 03/05/2019, Revised 16/04/2019, Published 03/05/2019

Filter bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) has gained significant importance as a contender for the fifth generation mobile communication system and also meets the application requirements of the Internet of things. The peak-to-average power ratio (PAPR) of the FBMC-OQAM is very high due to using a same prototype filter for each subcarrier and the addition of different subcarriers at the transmitter. Therefore, a novel randomly assigning prototype filter (RAPF) method is proposed to reduce PAPR in FBMC-OQAM system. Based on the proposed RAPF method, the authors analyse the performances of both PAPR and bit error rate (BER) in the FBMC-OQAM system. Simulation results show that the proposed RAPF method helps to significantly reduce PAPR of FBMC-OQAM system. Meanwhile, compared with conventional FBMC-OQAM system, the proposed RAPF-FBMC-OQAM scheme has almost the same BER performance in the additive white Gaussian noise channel but is descended slightly only in the high signal-to-noise ratio region of the frequency selective fading channel.

Inspec keywords: fading channels; channel bank filters; OFDM modulation; quadrature amplitude modulation; AWGN channels; error statistics

Other keywords: conventional FBMC-OQAM system; prototype filter method; RAPF method; PAPR; fifth generation mobile communication system; RAPF-FBMC-OQAM scheme

Subjects: Radio links and equipment; Mobile radio systems; Modulation and coding methods; Filtering methods in signal processing; Other topics in statistics

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