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International Journal of Sensors, Wireless Communications and Control

Author(s): Ammar Boudjelkha*, Hocine Merah and Abdellatif Khelil

DOI: 10.2174/2210327913666230512163935

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Multi-antennas PAPR Reduction for FBMC/OQAM System

Page: [108 - 116] Pages: 9

  • * (Excluding Mailing and Handling)

Abstract

Background: The filter bank multicarrier (FBMC) with offset quadrature amplitude modulation (OQAM) is a promising future generation of wireless systems. However, like multicarrier modulations (MCM), FBMC/OQAM has a high peak-to-average power ratio (PAPR), which allows the FBMC/OQAM signal to pass through the nonlinear region of the high-power amplifier (HPA) in the time domain and causes in-band and out of band (OOB) distortion.

Methods: In this paper, a new method to overcome this problem called multi-antennas PAPR (MAP) reduction is proposed. It consists of using I antennas in transmission and reception to transmit I FBMC/OQAM sub-signals with low PAPR. The complementary cumulative distribution function (CCDF), the bit error rate (BER), and the energy efficiency are used to evaluate the method's performance.

Results: The simulation results showed that the new technique can reduce the PAPR of the original signal by more than half, achieve BER comparable to that of the original signal without HPA, and when the input back-off (IBO) equals 3dB, the error vector magnitude (EVM) result can be reduced from 19% to 7%.

Conclusion: The PAPR, BER, and EVM of MAP technique are much better than the original system.

Graphical Abstract

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