Energy-efficient Beamforming Design for Simultaneous Lightwave Information and Power Transfer in VLC systems

LU Yang; XIONG Ke; GAO Bo; FAN Dian; PAN Gaofeng; AI Bo

doi:10.11999/JEIT220191

Volume 44 Issue 8

Aug. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(8): 2611-2618

LU Yang, XIONG Ke, GAO Bo, FAN Dian, PAN Gaofeng, AI Bo. Energy-efficient Beamforming Design for Simultaneous Lightwave Information and Power Transfer in VLC systems[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2611-2618. doi: 10.11999/JEIT220191

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LU Yang, XIONG Ke, GAO Bo, FAN Dian, PAN Gaofeng, AI Bo. Energy-efficient Beamforming Design for Simultaneous Lightwave Information and Power Transfer in VLC systems[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2611-2618. doi: 10.11999/JEIT220191

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Energy-efficient Beamforming Design for Simultaneous Lightwave Information and Power Transfer in VLC systems

doi: 10.11999/JEIT220191 cstr: 32379.14.JEIT220191

LU Yang¹,
XIONG Ke¹,
GAO Bo^{1
,
,},
FAN Dian²,
PAN Gaofeng³,
AI Bo⁴

1.
School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China
2.
China Academy of Information and Communication Technology, Beijing 100191, China
3.
School of Cyberspace Science and Technology, Beijing University of Technology, Beijing 100081, China
4.
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China

Funds: The National Natural Science Foundation of China (62101025), Beijing Nova Program (Z211100002121139), China Postdoctoral Science Foundation (BX2021031)

Received Date: 2022-02-28
Rev Recd Date: 2022-06-12

Available Online: 2022-06-29

Publish Date: 2022-08-17

Abstract

Abstract

Internet of Things (IoT) is a key application of future 6G. However, it is challenging to provide high-quality wireless coverage for billions of IoT devices with limited Radio Frequency (RF) bandwidth. Visible Light Communication (VLC) utilizes abundant ultrahigh bandwidths as complement to RF communication. This paper investigates the Energy Efficiency (EE) of a Simultaneous Lightwave Information and Power Transfer (SLIPT) enabled multi-user VLC system. An EE maximization problem is formulated under constraints of Quality of Service (QoS) requirements of energy harvesting and information rate at users, avoiding clipping distortion by the nonlinearity of the LED and the power budget at VLC transmitter. To solve the considered problem, an iterative algorithm is proposed based on Dinkelbach and successive convex approximation methods to optimize the beamforming vectors and the direct current offset. The convergence of the proposed algorithm is theoretically proved. The impact of the constraint of avoiding clipping distortion by the nonlinearity of the LED on EE is discussed. Simulation results verify the analysis. Moreover, the impacts of QoS requirements of users, the power budget at VLC transmitter and the filed of view of LED on EE are illustrated and analyzed.
- Visible Light Communication (VLC),
- Simultaneous Lightwave Information and Power Transfer (SLIPT),
- Beamforming,
- Energy Efficiency (EE)

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References(22)

References

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