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Pengfei Xia
Tongji University
Communication channelElectronic engineeringComputer scienceBeamformingWireless
130Publications
21H-index
3,664Citations
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Publications 66
Newest
#1Aozhou WuH-Index: 1
#2Qingqing ZhangH-Index: 6
Last. Pengfei XiaH-Index: 21
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...
May 1, 2019 in ICC (International Conference on Communications)
#1Mingliang Xiong (Tongji University)H-Index: 4
#2Qingwen Liu (Tongji University)H-Index: 13
Last. Pengfei Xia (Tongji University)H-Index: 21
view all 4 authors...
The vision and requirements of the sixth generation (6G) mobile communication systems are expected to adopt free-space 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 here a mobile and safe resonant beam communication (RBCom) system, which can realize high-rate simultaneous wireless information and power transfer (SWIPT). We propose the analytical model to dep...
4 CitationsSource
#1Qingqing Zhang (Tongji University)H-Index: 6
#2Mingqing Liu (Tongji University)H-Index: 4
Last. Pengfei Xia (Tongji University)H-Index: 21
view all 6 authors...
To enable electric vehicles (EVs) to access to the Internet of Intelligent Vehicles (IoIV), charging EVs wirelessly anytime and anywhere becomes an urgent need. The resonant beam charging (RBC) technology can provide high-power and long-range wireless energy for EVs. However, the RBC system is unefficient. To improve the RBC power transmission efficiency, the adaptive RBC (ARBC) technology was introduced. In this paper, after analyzing the modular model of the ARBC system, we obtain the closed-f...
Source
#1Wen Fang (Tongji University)H-Index: 4
#2Qingqing Zhang (Tongji University)H-Index: 6
Last. Pengfei Xia (Tongji University)H-Index: 21
view all 5 authors...
Resonant beam charging (RBC) is a promising wireless power transfer technology to provide long-range, high-power, mobile, and safe wireless power for the Internet of Things devices. The point-to-multipoint (PtMP) RBC system can charge multiple receivers simultaneously similar to WiFi communications. To guarantee the quality of charging service (QoCS) for each receiver and maximize the overall earning in the PtMP RBC service, we specify the charging pricing strategy and develop the high priority ...
1 CitationsSource
#1Qingqing ZhangH-Index: 6
#2Wen FangH-Index: 4
Last. Pengfei XiaH-Index: 21
view all 6 authors...
As a long-range high-power wireless power transfer (WPT) technology, resonant beam charging (RBC) can transmit Watt-level power over long distance for the devices in the internet of things (IoT). Due to its open-loop architecture, RBC faces the challenge of providing dynamic current and voltage to optimize battery charging performance. In RBC, battery overcharge may cause energy waste, thermal effects, and even safety issues. On the other hand, battery undercharge may lead to charging time exten...
9 CitationsSource
#1Mingliang Xiong (Tongji University)H-Index: 4
#2Mingqing Liu (Tongji University)H-Index: 4
Last. Pengfei Xia (Tongji University)H-Index: 21
view all 6 authors...
Resonant beam charging (RBC) can realize wireless power transfer (WPT) from a transmitter to multiple Internet of Things devices via resonant beams. The adaptive RBC (ARBC) can effectively improve its energy utilization. In order to support multiuser WPT in the ARBC system, we propose the time-division multiple access (TDMA) method and design the TDMA-based WPT scheduling algorithm. Our TDMA WPT method has the features of concurrently charging, continuous charging current, individual user power ...
3 CitationsSource
#1Wen FangH-Index: 4
#2Qingqing ZhangH-Index: 6
Last. Pengfei XiaH-Index: 21
view all 5 authors...
Resonant Beam Charging (RBC) is the Wireless Power Transfer (WPT) technology, which can provide high-power, long-distance, mobile, and safe wireless charging for Internet of Things (IoT) devices. Supporting multiple IoT devices charging simultaneously is a significant feature of the RBC system. To optimize the multi-user charging performance, the transmitting power should be scheduled for charging all IoT devices simultaneously. In order to keep all IoT devices working as long as possible for fa...
12 CitationsSource
Dec 1, 2018 in GLOBECOM (Global Communications Conference)
#1Aozhou Wu (Tongji University)H-Index: 1
#2Qingqing Zhang (Tongji University)H-Index: 6
Last. Pengfei Xia (Tongji University)H-Index: 21
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...
3 CitationsSource
#1Mingliang XiongH-Index: 4
#2Qingwen LiuH-Index: 13
Last. Xin WangH-Index: 29
view all 5 authors...
The vision and requirements of the sixth generation (6G) mobile communication systems are expected to adopt free-space 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 here a mobile and safe resonant beam communication (RBCom) system, which can realize high-rate simultaneous wireless information and power transfer (SWIPT). We propose the analytical model to dep...
#1Zhenyu Xiao (Beihang University)H-Index: 14
#2Hang Dong (Beihang University)H-Index: 1
Last. Xiang-Gen Xia (SZU: Shenzhen University)H-Index: 62
view all 5 authors...
The existing channel estimation methods for millimeter-wave communications, e.g., hierarchical search and compressed sensing, either acquire only one single multipath component (MPC) or require considerably high training overhead. To realize fast yet accurate channel estimation, we propose a multipath decomposition and recovery approach in this paper. The proposed approach has two stages. In the first stage, instead of directly searching the real MPCs, we decompose each real MPC into several vir...
10 CitationsSource
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