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Qingwen Liu
Tongji University
Link adaptationWireless power transferComputer networkComputer scienceWireless
41Publications
13H-index
2,230Citations
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Publications 48
Newest
#1Mingliang XiongH-Index: 2
#2Qingwen LiuH-Index: 13
Last. Hao Deng (Tongji University)
view all 5 authors...
The vision and requirements of the sixth generation (6G) mobile communication systems are expected to adopt freespace optical communication (FSO) and wireless power transfer (WPT). The laser-based WPT or wireless information transfer (WIT) usually faces the challenges of mobility and safety. We present a mobile and safe resonant beam communication (RBCom) system, which can realize high-rate simultaneous wireless information and power transfer (SWIPT). We propose an analytical model to depict its...
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#2Qingqing ZhangH-Index: 4
Last. Qingwen Liu (Tongji University)H-Index: 13
view all 6 authors...
Resonant Beam Charging (RBC) is a promising multi-Watt and multi-meter wireless power transfer method with safety, mobility and simultaneously-charging capability. However, RBC system operation relies on information availability including power receiver location, class label and the receiver number. Since smartphone is the most widely-used mobile device, we propose a Mask R-CNN based smartphone detection model in the RBC system. Experiments illustrate that our model reduces the smartphone scanni...
#1Mingliang Xiong (Tongji University)H-Index: 2
#2Qingwen Liu (Tongji University)H-Index: 13
Last. Hao Deng (Fudan University)
view all 5 authors...
The vision and requirements of the sixth generation (6G) mobile communication systems are expected to adopt freespace optical communication (FSO) and wireless power transfer (WPT). The laser-based WPT or wireless information transfer (WIT) usually faces the challenges of mobility and safety. We present a mobile and safe resonant beam communication (RBCom) system, which can realize high-rate simultaneous wireless information and power transfer (SWIPT). We propose an analytical model to depict its...
Last. Wei Chen (THU: Tsinghua University)H-Index: 69
view all 7 authors...
Resonant Beam Charging (RBC) is a wireless charging technology which supports multi-watt power transfer over meter-level distance. The features of safety, mobility and simultaneous charging capability enable RBC to charge multiple mobile devices safely at the same time. To detect the devices that need to be charged, a Mask R-CNN based dection model is proposed in previous work. However, considering the constraints of the RBC system, it's not easy to apply Mask R-CNN in lightweight hardware-embed...
#2Qingqing ZhangH-Index: 4
Last. Pengfei XiaH-Index: 19
view all 7 authors...
Resonant Beam Charging (RBC) is a promising multi-Watt and multi-meter wireless power transfer method with safety, mobility and simultaneously-charging capability. However, RBC system operation relies on information availability including power receiver location, class label and the receiver number. Since smartphone is the most widely-used mobile device, we propose a Mask R-CNN based smartphone detection model in the RBC system. Experiments illustrate that our model reduces the smartphone scanni...
#1Mingqing Liu (Tongji University)H-Index: 2
#2Gang Wang (Tongji University)H-Index: 11
Last. Hao Deng (UMN: University of Minnesota)H-Index: 1
view all 6 authors...
Wireless Energy Transfer (WET) has recently emerged as an appealing solution for power supplying mobile / Internet of Things (IoT) devices. As an enabling WET technology, Resonant Beam Charging (RBC) is well-documented for its long-range, high-power, and safe "WiFi-like" mobile power supply. To provide high-quality wireless charging services for multi-user in a given region, we formulate a deployment problem of multiple RBC transmitters for balancing the charging fairness and quality of charging...
#1Mingqing LiuH-Index: 2
#2Gang WangH-Index: 11
Last. Hao DengH-Index: 1
view all 6 authors...
Wireless energy transfer (WET) has recently emerged as an appealing solution for power supplying mobile/Internet of Things (IoT) devices. As an enabling WET technology, resonant beam charging (RBC) is well documented for its long-range, high-power, and safe “WiFi-like” mobile power supply. To provide high-quality wireless charging services for multiple users in a given region, we formulate a deployment problem of multiple RBC transmitters for balancing the charging fairness and quality of chargi...
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#1Wen FangH-Index: 3
#1Wen Fang (Tongji University)
Last. Hao DengH-Index: 1
view all 6 authors...
Resonant Beam Charging (RBC) is a long-range, high-power, mobile, and safe Wireless Energy Transfer (WET) technology, which can provide wireless power for mobile devices like Wi-Fi communications. Due to the wireless energy transmission decay in RBC systems, the charging power received per device relies on the distance-dependent energy transmission channel. To extend battery life of all devices, this paper develops a Channel-Dependent Charge (CDC) scheduling algorithm to control receivers’ charg...
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#1Mingliang Xiong (Tongji University)H-Index: 2
Last. Chuan HuangH-Index: 1
view all 5 authors...
Wireless optical communications (WOC) has carriers up to several hundred terahertz, which offers several advantages, such as ultrawide bandwidth and no electromagnetic interference. Conventional WOC technologies that use light transmitters such as light emitting diodes (LEDs), directed LEDs, and lasers are facing major challenges in attenuation or tracking. Resonant beam communications (RBCom) meets the requirements of low attenuation, non-mechanical mobility, and multiple access. However, RBCom...
1 CitationsSource
#1Hao Li (Tongji University)
#2Aozhou Wu (Tongji University)
Last. Chen Wei (THU: Tsinghua University)H-Index: 26
view all 7 authors...
Resonant Beam Charging (RBC) is a wireless charging technology which supports multi-watt power transfer over meter-level distance. The features of safety, mobility and simultaneous charging capability enable RBC to charge multiple mobile devices safely at the same time. To detect the devices that need to be charged, a Mask R-CNN based dection model is proposed in previous work. However, considering the constraints of the RBC system, it's not easy to apply Mask R-CNN in lightweight hardware-embed...
Source
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