Three-Stage Stepwise Detection Algorithm for Zero-Padded Dual-Mode Optical OFDM Index Modulation

Huiqin Wang; Weiyu Zhou; Qihan Tang; Zhen Wang; Pengfei Wu; Qingbin Peng; yue Zhang

doi:10.3788/AOS240599

Acta Optica Sinica, Volume. 44, Issue 11, 1106003(2024)

Three-Stage Stepwise Detection Algorithm for Zero-Padded Dual-Mode Optical OFDM Index Modulation

Huiqin Wang^1、*, Weiyu Zhou¹, Qihan Tang¹, Zhen Wang¹, Pengfei Wu², Qingbin Peng¹, and yue Zhang¹

Author Affiliations

¹School of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, Gansu , China

²School of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi , China

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Figures & Tables(13)

Fig. 1. ZDM-OOFDM-IM system model

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Fig. 2. Transmission rates of OOFDM-IM, DM-OOFDM-IM, and ZDM-OOFDM-IM systems

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Fig. 3. Distributed detection algorithm based on KMC++

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Fig. 4. BER of different ZDM-OOFDM-IM systems

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Fig. 5. BER of OOFDM-IM, DM-OOFDM-IM, and proposed systems

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Fig. 6. BER of the proposed (4,2,1,2,4) system under different turbulence intensities

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Fig. 7. Effect of decoding algorithms on BER of ZDM-OOFDM-IM (4, 2, 1, 2, 4) system

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Fig. 8. Effect of modulation order and detection algorithm on BER of system

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Fig. 9. Experimental device of ZDM-OOFDM-IM system

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Fig. 10. Experimental values of BER for (4, 2, 1, 2, 2) and (4, 2, 1, 4, 4) systems using ML and proposed algorithms

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Fig. 11. Effect of decoding algorithms on BER of ZDM-OOFDM-IM (4, 2, 1, 2, 4) system

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Fig. 12. Complexity comparison of proposed system using different decoding algorithms. (a) Effect of modulation order on complexity;(b) effect of number of subcarrier blocks on complexity

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Table 1. Comparison of computational complexity of different algorithms for online detection

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Table 1. Comparison of computational complexity of different algorithms for online detection

Detection algorithm	FLOPs
ML detection	$O [2^{M_{A} + 1} l (k_{1} + k_{2}) \cdot (M_{A} + M_{B})]$
ZF detection	$O [\frac{3}{2} l^{2} + \frac{1}{2} l + l (k_{1} M_{A}^{} + k_{2} M_{B}^{})]$
MMSE detection	$O [\frac{1}{2} l^{3} + \frac{3}{2} l^{2} + l (k_{1} M_{A}^{} + k_{2} M_{B}^{} + 1)]$
DNN detection	$O \{l \cdot [1 + φ_{1} + φ_{1} φ_{2} + φ_{2} + M \cdot ⌊l o g_{2} (C_{l}^{k_{1}} C_{l - k_{1}}^{k_{2}})⌋]\}$
KMC detection	$O [2^{M_{A} + 1} l (k_{1} + k_{2}) \cdot (M_{A} + M_{B})]$
Proposed detection	$O \{l [2 (k_{1} M_{A}^{} + k_{2} M_{B}^{}) + l o g_{2} l + 1]\}$

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Huiqin Wang, Weiyu Zhou, Qihan Tang, Zhen Wang, Pengfei Wu, Qingbin Peng, yue Zhang. Three-Stage Stepwise Detection Algorithm for Zero-Padded Dual-Mode Optical OFDM Index Modulation[J]. Acta Optica Sinica, 2024, 44(11): 1106003

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Paper Information

Category: Fiber Optics and Optical Communications

Received: Jan. 31, 2024

Accepted: Mar. 8, 2024

Published Online: Jun. 17, 2024

The Author Email: Wang Huiqin (Whq1222@lut.edu.cn)

DOI:10.3788/AOS240599

CSTR:32393.14.AOS240599

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology