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<p>In designing a wireless energy harvesting (EH) system, it’s essential to model such a system, including simultaneous wireless information and power transmission (SWIPT) systems, to achieve an accurate and reliable system. Lightwave-based SWIPT systems are reliable, high data rates, and electromagnetic-free interference, which are essential for the development of the model. Different influences impact the optical beam, such as atmospheric attenuation and atmospheric turbulence (scintillation effect). The study evaluates the performance of the laser-based SWIPT system over the free space optical channel (FSO) in different turbulence environments. The simulation illustrated that the attenuation effect for the 500&#xa0;m FSO link results in approximately a 14 dB power penalty (PP) in the bit error rate (BER) curve. In contrast to the single junction PV receiver systems, there is a significant 10% improvement in the overall optoelectrical power conversion efficiency when the multijunction solar cells are used as receivers. However, with longer distances, efficiency decreases due to an increasing divergence angle, as well as scintillation losses. Test results indicate that the system is capable of achieving a data rate of 800 Mbps at minimal BER. Additionally, external solar radiation and temperature variations of the PV cell are were found to negatively affect conversion efficiency, which attests to the importance of thermal management in optimizing system performance. These findings are of pragmatic significance since they guide the design and operation of lightwave-based SWIPT systems in terms of optimizing overall operation and enhancing performance.</p>

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Modelling of laser-based SWIPT system with multijunction photovoltaic receiver

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Murtadha B. Shlash,
  • Hassan K. Al-Musawi,
  • Maher A. R. Sadiq Al-Baghdadi

摘要

In designing a wireless energy harvesting (EH) system, it’s essential to model such a system, including simultaneous wireless information and power transmission (SWIPT) systems, to achieve an accurate and reliable system. Lightwave-based SWIPT systems are reliable, high data rates, and electromagnetic-free interference, which are essential for the development of the model. Different influences impact the optical beam, such as atmospheric attenuation and atmospheric turbulence (scintillation effect). The study evaluates the performance of the laser-based SWIPT system over the free space optical channel (FSO) in different turbulence environments. The simulation illustrated that the attenuation effect for the 500 m FSO link results in approximately a 14 dB power penalty (PP) in the bit error rate (BER) curve. In contrast to the single junction PV receiver systems, there is a significant 10% improvement in the overall optoelectrical power conversion efficiency when the multijunction solar cells are used as receivers. However, with longer distances, efficiency decreases due to an increasing divergence angle, as well as scintillation losses. Test results indicate that the system is capable of achieving a data rate of 800 Mbps at minimal BER. Additionally, external solar radiation and temperature variations of the PV cell are were found to negatively affect conversion efficiency, which attests to the importance of thermal management in optimizing system performance. These findings are of pragmatic significance since they guide the design and operation of lightwave-based SWIPT systems in terms of optimizing overall operation and enhancing performance.