Hybrid-Domain Evaluation PTS with Adaptive Selection Methods for PAPR Reduction

Feng Hu, Yuan Lu, Libiao Jin, Jianbo Liu, Zhiping Xia, Guoting Zhang and Jingting Xiao
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Feng Hu: School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
Yuan Lu: School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
Libiao Jin: School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
Jianbo Liu: School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
Zhiping Xia: Academy of Broadcasting Science, Beijing 100045, China
Guoting Zhang: Academy of Broadcasting Science, Beijing 100045, China
Jingting Xiao: Academy of Broadcasting Science, Beijing 100045, China

Energies, 2022, vol. 15, issue 8, 1-21

Abstract: The partial transmit sequence (PTS) technique is a fairly suitable scheme to mitigate the high peak-to-average power ratio (PAPR) problem inherent in 5G multicarrier systems, especially considering a high-order QAM modulation design. However, the high computational complexity level and the speed of the convergence for optimizing the phases of the transmitting signal restrict this technique in practical applications. In this paper, a low-complexity frequency-domain-evaluated PTS (F-PTS) based on a spacing multiobjective (SMO) processing algorithm is proposed to reduce the PAPR values. The PAPR performance are accurately predicted in terms of modifying relative dispersion in the frequency domain. As a result, the complexity of searching the optimal phase factors and IFFT computing is simplified. Moreover, a frequency-domain- and time-domain-evaluating PTS (FTD-PTS) is employed to search the optimal solution with a reasonable complexity. Simulation results verify that the operation rate of F-PTS is significantly improved after transferring the exhaustive search strategy of PTS into the SMO algorithm, and the F-PTS PAPR reduction performance is just 0.3 dB away from theoretical optimal performance. The FTD-PTS spends an acceptable operation rate to obtain optimal PAPR reduction performance, which subtracts 0.5 and 0.6 dB more than PSO-PTS and conventional PTS at CCDF = 10 − 3 , respectively.

Keywords: multicarrier system; 5G communication; partial transmission sequence; OFDM; power amplifier efficiency; PAPR (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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