27 citations · 88 across the 10 of their papers we have counts for
12 papers
Polarization-Aware Rotatable Antennas for RIS-Empowered Symbiotic Radios
Chao Zhang, Ruizhe Long, Boon-Hee Soong +1
This paper investigates a dual-polarized reconfigurable intelligent surface (DP-RIS)-empowered symbiotic radio (SR) system with rotatable antennas (RAs). By reconfiguring antenna o…
Simultaneous Indoor and Outdoor Coverage with Conformal Intelligent Omni-Surface
Yiqi Chen, Xiaoming She, Jianchi Zhu +3
Seamless indoor--outdoor coverage conventionally relies on coordinated outdoor macro cells and indoor small cells, incurring high deployment and backhaul costs. Intelligent omni-su…
Polarization-aware Reconfigurable Antenna Aided Wireless Communications
Chao Zhang, Hu Zhou, Ruizhe Long +2
Reconfigurable antennas (RAs) have emerged as a promising technology for future wireless networks, offering additional flexibility for wireless communications. Among existing desig…
Power-Aware Sparse Reflect Beamforming in Active RIS-aided Interference Channels
Ruizhe Long, Hu Zhou, Ying-Chang Liang
Active reconfigurable intelligent surface (RIS) has attracted significant attention in wireless communications, due to its reflecting elements (REs) capable of reflecting incident…
Channel Estimation and Training Design for Active RIS Aided Wireless Communications
Hao Chen, Nanxi Li, Ruizhe Long +1
Active reconfigurable intelligent surface (ARIS) is a newly emerging RIS technique that leverages radio frequency (RF) reflection amplifiers to empower phase-configurable reflectio…
Pilot Design and Signal Detection for Symbiotic Radio over OFDM Carriers
Hao Chen, Qianqian Zhang, Ruizhe Long +2
Symbiotic radio (SR) is a promising solution to achieve high spectrum- and energy-efficiency due to its spectrum sharing and low-power consumption properties, in which the secondar…
Modulation Design and Optimization for RIS-Assisted Symbiotic Radios
Hu Zhou, Bowen Cai, Qianqian Zhang +3
In reconfigurable intelligent surface (RIS)-assisted symbiotic radio (SR), the RIS acts as a secondary transmitter by modulating its information bits over the incident primary sign…
Deep Reinforcement Learning for Distributed Dynamic Coordinated Beamforming in Massive MIMO Cellular Networks
Jungang Ge, Ying-Chang Liang, Liao Zhang +2
To accommodate the explosive wireless traffics, massive multiple-input multiple-output (MIMO) is regarded as one of the key enabling technologies for next-generation communication…
Symbiotic Communications: Where Marconi Meets Darwin
Ying-Chang Liang, Ruizhe Long, Qianqian Zhang +1
With the proliferation of wireless applications, the electromagnetic (EM) space is becoming more and more crowded and complex. This makes it a challenging task to accommodate the g…
Active Reconfigurable Intelligent Surface Aided Wireless Communications
Ruizhe Long, Ying-Chang Liang, Yiyang Pei +1
Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in t…
Large Intelligent Surface/Antennas (LISA): Making Reflective Radios Smart
Ying-Chang Liang, Ruizhe Long, Qianqian Zhang +3
Large intelligent surface/antennas (LISA), a two-dimensional artificial structure with a large number of reflective-surface/antenna elements, is a promising reflective radio techno…
Symbiotic Radio: A New Communication Paradigm for Passive Internet-of-Things
Ruizhe Long, Huayan Guo, Gang Yang +2
In this paper, a novel technique, called symbiotic radio (SR), is proposed for passive Internet-of-Things (IoT), in which a backscatter device (BD) is integrated with a primary tra…