Given the excessive peak-to-average power ratio(PAPR)in the universal filtered multi-carrier(UFMC)system,a PAPR suppression algorithm based on the improved discrete particle swarm optimization(IDPSO)is proposed.Based on the discrete particle swarm optimization(DPSO)algorithm,the algorithm introduces an improved method of segmented linear adjustment of control parameters,improves the search performance of DPSO,and then combines the IDPSO algorithm with the partial transfer sequence(PTS)technology to scramble each subblock.The proposed algorithm searches for the best combination of phase factors within the specified number of iterations to reduce the peak-to-average ratio of the UFMC system.Simulation results show that the IDPSO-PTS algorithm can reduce the PAPR by 3.5 dB compared with the original UFMC,and reduce the PAPR by 0.2 dB compared with the DPSO-PTS algorithm.When there are a large number of candidate phase factor combinations,the IDPSO-PTS algorithm can significantly reduce the computational complexity compared with the PTS technology.
universal filtering multi-carriers(UFMC)peak-to-average power ratio(PAPR)improved discrete particle swarm optimization(IDPSO)partial transfer sequencelow-complexity
维普
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