731 citations · 3.8k across the 42 of their papers we have counts for
7 papers · 1 filter
Exploiting NOMA for Multi-Beam UAV Communication in Cellular Uplink
Liang Liu, Shuowen Zhang, Rui Zhang
Unmanned aerial vehicles (UAVs) are expected to be an important new class of users in the fifth generation (5G) and beyond 5G cellular networks. In particular, there are emerging U…
Multi-Beam UAV Communication in Cellular Uplink: Cooperative Interference Cancellation and Sum-Rate Maximization
Liang Liu, Shuowen Zhang, Rui Zhang
Integrating unmanned aerial vehicles (UAVs) into the cellular network as new aerial users is a promising solution to meet their ever-increasing communication demands in a plethora…
Fundamental Tradeoffs in Communication and Trajectory Design for UAV-Enabled Wireless Network
Qingqing Wu, Liang Liu, Rui Zhang
The use of unmanned aerial vehicles (UAVs) as aerial communication platforms is of high practical value for future wireless systems such as 5G, especially for swift and on-demand d…
Sparse Signal Processing for Grant-Free Massive Connectivity: A Future Paradigm for Random Access Protocols in the Internet of Things
Liang Liu, Erik G. Larsson, Wei Yu +3
The next wave of wireless technologies will proliferate in connecting sensors, machines, and robots for myriad new applications, thereby creating the fabric for the Internet of Thi…
CoMP in the Sky: UAV Placement and Movement Optimization for Multi-User Communications
Liang Liu, Shuowen Zhang, Rui Zhang
Driven by the recent advancement in unmanned aerial vehicle (UAV) technology, this paper proposes a new wireless network architecture of \emph{coordinate multipoint (CoMP) in the s…
Channel Diagonalization for Cloud Radio Access
Liang Liu, Pratik Patil, Wei Yu
The diagonalization of a conventional multiple-input multiple-output (MIMO) channel into parallel and independent subchannels via singular value decomposition (SVD) is a fundamenta…
Joint Task Assignment and Wireless Resource Allocation for Cooperative Mobile-Edge Computing
Hong Xing, Liang Liu, Jie Xu +1
This paper studies a multi-user cooperative mobile-edge computing (MEC) system, in which a local mobile user can offload intensive computation tasks to multiple nearby edge devices…