Next Article in Journal
Real-Case FEM Study of a 600 km/h EMS High-Speed Maglev: Electromagnetic, Force, and Harmonic Analysis
Previous Article in Journal
Improving the Downstream Performance of Mixture-of-Experts Transformers via Weak Vanilla Transformers
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Electronics
Volume 14
Issue 21
10.3390/electronics14214258
electronics-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Ambient Carrier Interference Cancellation for Backscatter in Distributed PV Systems

by
Xu Liu
1,
Xiaobing Xiao
1,
Guanghui Zhang
1,
Wu Dong
1,
Yongxiang Cai
1,
Qing Liu
1,
Yueyao Wang
2,
Da Chen
2,* and
Wei Wang
3,*
1
Power Dispatch Control Center, Guizhou Power Grid Co., Ltd., Guiyang 550000, China
2
School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
3
School of Computer Science, Wuhan University, Wuhan 430072, China
*
Authors to whom correspondence should be addressed.
Electronics 2025, 14(21), 4258; https://doi.org/10.3390/electronics14214258
Submission received: 11 September 2025 / Revised: 26 October 2025 / Accepted: 28 October 2025 / Published: 30 October 2025
(This article belongs to the Section Circuit and Signal Processing)
Versions Notes

Abstract

Despite the promising prospects of reusing ambient carriers for ultra-low-power communication, backscatter tags also suffer severe interference from ambient carriers, which limits their performance. Existing backscatter approaches avoid interference by shifting scattered signals away from the carrier, leading to spectral wastage and making large-scale deployment impractical. To address this issue, this paper proposes the first Ambient Carrier Interference Cancellation (ACIC) system for backscatter communication, especially tailored for Distributed photovoltaic (PV) scenarios. ACIC has the following novel components: (i) a carrier-detecting scheme that detects and filters out the carrier from the received ambient signals; (ii) an adaptive interference-cancellation system that cancels the carrier with programmable phase shift and attenuator; (iii) an acceleration algorithm to enhance the speed of the cancellation. We then implement the ACIC system and conduct comprehensive experiments to evaluate its performance. Our results demonstrate that the ACIC system achieves greater than 40 dB interference cancellation, both with and without a backscatter tag. Unlike frequency-shifting schemes that sacrifice spectral efficiency, our ACIC achieves in-band carrier cancellation, reducing BER from 0.5 to 0.03 at 0.5 m distance. This improvement enables reliable and scalable battery-free sensing in distributed PV systems.
Keywords: ambient backscatter; backscatter hardware; carrier interference cancellation ambient backscatter; backscatter hardware; carrier interference cancellation

Share and Cite

MDPI and ACS Style

Liu, X.; Xiao, X.; Zhang, G.; Dong, W.; Cai, Y.; Liu, Q.; Wang, Y.; Chen, D.; Wang, W. Ambient Carrier Interference Cancellation for Backscatter in Distributed PV Systems. Electronics 2025, 14, 4258. https://doi.org/10.3390/electronics14214258

AMA Style

Liu X, Xiao X, Zhang G, Dong W, Cai Y, Liu Q, Wang Y, Chen D, Wang W. Ambient Carrier Interference Cancellation for Backscatter in Distributed PV Systems. Electronics. 2025; 14(21):4258. https://doi.org/10.3390/electronics14214258

Chicago/Turabian Style

Liu, Xu, Xiaobing Xiao, Guanghui Zhang, Wu Dong, Yongxiang Cai, Qing Liu, Yueyao Wang, Da Chen, and Wei Wang. 2025. "Ambient Carrier Interference Cancellation for Backscatter in Distributed PV Systems" Electronics 14, no. 21: 4258. https://doi.org/10.3390/electronics14214258

APA Style

Liu, X., Xiao, X., Zhang, G., Dong, W., Cai, Y., Liu, Q., Wang, Y., Chen, D., & Wang, W. (2025). Ambient Carrier Interference Cancellation for Backscatter in Distributed PV Systems. Electronics, 14(21), 4258. https://doi.org/10.3390/electronics14214258

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop