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Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer

Abstract: 

Usage of passive intelligent surface (PIS) is emerging as a low-cost green alternative to massive antenna systems for realizing high energy beamforming (EB) gains. To maximize its realistic utility, we present a novel channel estimation (CE) protocol for PIS-assisted energy transfer (PET) from a multiantenna power beacon (PB) to a single-antenna energy harvesting (EH) user. Noting the practical limitations of PIS and EH user, all computations are carried out at PB having required active components and radio resources. Using these estimates, near-optimal analytical active and passive EB designs are respectively derived for PB and PIS, that enable efficient PET over a longer duration of coherence block. Nontrivial design insights on relative significance of array size at PIS and PB are also provided. Numerical results validating theoretical claims against the existing benchmarks demonstrate that with sufficient passive elements at PIS, we can achieve desired EB gain with reduced active array size at PB.

URL: https://ieeexplore.ieee.org/abstract/document/8683663/

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Paper Details

Authors:
Deepak Mishra, Håkan Johansson
Submitted On:
8 May 2019 - 4:49am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Deepak Mishra
Paper Code:
3641
Document Year:
2019
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Document Files

Poster_PIS_WET_ICASSP19.pdf

(23)

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[1] Deepak Mishra, Håkan Johansson, "Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer", IEEE SigPort, 2019. [Online]. Available: http://sigport.org/4051. Accessed: Aug. 25, 2019.
@article{4051-19,
url = {http://sigport.org/4051},
author = {Deepak Mishra; Håkan Johansson },
publisher = {IEEE SigPort},
title = {Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer},
year = {2019} }
TY - EJOUR
T1 - Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer
AU - Deepak Mishra; Håkan Johansson
PY - 2019
PB - IEEE SigPort
UR - http://sigport.org/4051
ER -
Deepak Mishra, Håkan Johansson. (2019). Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer. IEEE SigPort. http://sigport.org/4051
Deepak Mishra, Håkan Johansson, 2019. Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer. Available at: http://sigport.org/4051.
Deepak Mishra, Håkan Johansson. (2019). "Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer." Web.
1. Deepak Mishra, Håkan Johansson. Channel Estimation and Low-complexity Beamforming Design for Passive Intelligent Surface Assisted MISO Wireless Energy Transfer [Internet]. IEEE SigPort; 2019. Available from : http://sigport.org/4051