Researching | Peak-to-Average Ratio Suppression Algorithm for Non-Hermitian Symmetric Optical OFDM System Based on GA-PTS

Laser & Optoelectronics Progress, Volume. 60, Issue 7, 0706005(2023)

Peak-to-Average Ratio Suppression Algorithm for Non-Hermitian Symmetric Optical OFDM System Based on GA-PTS

Ling Qin, Liqiang Yu, Fengying Wang, Xiaoli Hu, and Yongxing Du^*

Author Affiliations

School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China

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Figures&Tables (14)

References (21)

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Figures & Tables(14)

Fig. 1. Block diagram of UO-OFDM system

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Fig. 2. Block diagram of complex to real and bipolar to unipolar conversion

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Fig. 3. Subcarrier mapping in the frequency domain

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Fig. 4. Block diagram of PTS technology

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Fig. 5. Block diagram of GA-PTS technology

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Fig. 6. Schematic of crossover and mutation operations

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Fig. 7. PAPR simulation curves of PTS technology with different V values

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Fig. 8. PAPR simulation curves of SLM and PTS technology

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Fig. 9. PAPR simulation curves. (a) PAPR of GA-PTS technique with different G values; (b) PAPR of different techniques

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Fig. 10. Simulation curves for ACO-OFDM and UO-OFDM systems. (a) BER; (b) PAPR

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Fig. 11. Running time of GA-PTS algorithm under different optical OFDM systems

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Table 1. PAPR performance simulation parameters for GA-PTS

Table 1. PAPR performance simulation parameters for GA-PTS

Parameter	Value
Modulation method	QAM
Modulation order	16
Number of subcarriers of valid data	$N = 64$
Number of sub-blocks	$V = 16$
Number of symbols	10000
Phase rotation factor	$b_{V} = 1, - 1$
Crossover probability	$P_{c} = 0.9$
Mutation probability	$P_{m} = 0.05$
Genetic generation	$G = 10,20,50,100,150,200$

Table 2. Comparison of computational complexity of ACO-OFDM and UO-OFDM systems
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Table 2. Comparison of computational complexity of ACO-OFDM and UO-OFDM systems
Optical OFDM system Calculation of multiplication Calculation of addition
ACO-OFDM 1024000 2048000
UO-OFDM 192000 384000

Table 3. Algorithm simulation time for conventional PTS and GA-PTS with different G values
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Table 3. Algorithm simulation time for conventional PTS and GA-PTS with different G values
Methods to reduce PAPR Time spent in simulation /s
GA-PTS，G=10 373
GA-PTS，G=20 721
GA-PTS，G=50 1737
GA-PTS，G=100 3410
GA-PTS，G=150 5141
GA-PTS，G=200 6899
Traditional PTS，V=16 37480

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Ling Qin, Liqiang Yu, Fengying Wang, Xiaoli Hu, Yongxing Du. Peak-to-Average Ratio Suppression Algorithm for Non-Hermitian Symmetric Optical OFDM System Based on GA-PTS[J]. Laser & Optoelectronics Progress, 2023, 60(7): 0706005

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Paper Information

Category: Fiber Optics and Optical Communications

Received: Jan. 3, 2022

Accepted: Feb. 21, 2022

Published Online: May. 24, 2023

The Author Email: Yongxing Du (dyxql@imust.edu.cn)

DOI:10.3788/LOP220629

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology