Novel Load-Free SSB Modulation for LoRa Backscatter Communication
To optimize the link budget for wearable backscatter communication system, a load-free single-sideband modulation architecture for LoRa backscatter communication is proposed. It eliminates the requirement for a complex impedance network by utilizing the transmission-line-based in-phase quadrature (IQ) radio frequency (RF) front-end to implement the Hilbert transform of the reflection coefficients. We establish a quantitative analysis framework for energy efficiency, and experimental results validate 10 dB target-sideband enhancement (vs 12 dB). Link measurements confirm a 4.2× improvement in indoor and a 2.6× enhancement in outdoor communication distance compared to legacy LoRa backscatter methods, achieving over 400% link budget enhancement with only 16% additional power overhead.
Authors
- Wei Xu (ORCID: https://orcid.org/0000-0001-9341-8382)
- Hao Chen (ORCID: https://orcid.org/0000-0002-8052-6760)
- Weibing Lu (ORCID: https://orcid.org/0000-0001-6337-1739)
- Jialong Wang
- Jianing Li
- Guosheng Yin (ORCID: https://orcid.org/0000-0003-3276-1392)
- Man Feng
Institutions
- Southeast University (CN)
Publication Details
- Journal
- IEEE Wireless Communications Letters
- Published
- 2025-09-16
- DOI
- https://doi.org/10.1109/lwc.2025.3610688
- Primary Topic
- Energy Harvesting in Wireless Networks
- Type
- article
- Field-Weighted Citation Impact
- 0.00