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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Research on Strong Background Light Suppression Technology Based on Power Inversion
摘要： this paper establishes a visible light communication system between LED traffic lights and vehicles under strong background light, and introduces the power inversion algorithm into the system to suppress the influence of strong background light, then analyzes and compares the bit error rate of the systems under different signal-to-interference ratio. The simulation results show that the power inversion using the 3-element receiving array can generate a null of about -70dB in the direction of strong background light, so that the noise value of the output is significantly reduced, the signal gain remains unchanged. When the signal interference ratio of system is -15, the BER is 10-4, which can supply the need of communication.
关键词： Receiver array,Visible light communication,Strong background light,Power inversion
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE Industry Applications Society Annual Meeting - Baltimore, MD, USA (2019.9.29-2019.10.3)] 2019 IEEE Industry Applications Society Annual Meeting - Simplified Photo-Electro-Thermal Model Applied to Resonant-Switched-Capacitor-Based OLED Drivers
摘要： The high precision ranging using ultra wideband (UWB) signals is expected for various applications. However, UWB requires mitigation of narrowband interference (NBI) from other wireless systems. There have been many studies of adaptive notch ?lters to cope with NBI at various frequencies. This paper proposes a novel NBI mitigation method which utilizes frequency dependence characteristics in array antennas. We use power inversion to direct nulls to large-power input, which realizes NBI only suppression with a small calculation cost. The results show that the proposed method can obtain lower bit error rate. The proposed method can cope with variously directional and multiple-frequency NBIs without a priori knowledge of the incident waves.
关键词： time of arrival (TOA),power inversion,Ultra wideband (UWB)
更新于2025-09-16 10:30:52