| Citation: | LI L，XUE L S，CHEN X H，et al. Improved peak-to-average ratio reduction method in FBMC/OQAM system[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（2）：457-463 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0254
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Aiming at the shortcomings of high peak-to-average power ratio (PAPR) in the filter bank multi-carrier system with offset quadrature amplitude modulation (FBMA/OQAM) system, which will cause distortion and affect the channel estimation performance, an interference cancellation method based on phase rotation (ICM-P) is proposed in this paper. This ICM-P method generates different phase sequences, obtains multiple sets of data sequences by multiplying with the transmission data, and calculates their PAPR respectively before selecting the group with the lowest PAPR for transmission. Simulation verification and analysis show that the ICM-P method can effectively reduce the excessive peak-to-average power ratio of the system, the bit error rate is not high, and the channel estimation performance is not significantly lower than the original ICM method.
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