63 citations · 228 across the 10 of their papers we have counts for
10 papers
Vehicular Edge Computing and Networking: A Survey
Lei Liu, Chen Chen, Qingqi Pei +2
As one key enabler of Intelligent Transportation System (ITS), Vehicular Ad Hoc Network (VANET) has received remarkable interest from academia and industry. The emerging vehicular…
Over-the-Air Implementation of Uplink NOMA
Samith Abeywickrama, Lei Liu, Yuhao Chi +1
Though the concept of non-orthogonal multiple access (NOMA) was proposed several years ago, the performance of uplink NOMA has only been verified in theory, but not in practice. Th…
Sparse Message Passing Based Preamble Estimation for Crowded M2M Communications
Zhaoji Zhang, Ying Li, Lei Liu +1
Due to the massive number of devices in the M2M communication era, new challenges have been brought to the existing random-access (RA) mechanism, such as severe preamble collisions…
Sparse Vector Recovery: Bernoulli-Gaussian Message Passing
Lei Liu, Chongwen Huang, Yuhao Chi +3
Low-cost message passing (MP) algorithm has been recognized as a promising technique for sparse vector recovery. However, the existing MP algorithms either focus on mean square err…
Modeling and Analysis of SCMA Enhanced D2D and Cellular Hybrid Network
Junyu Liu, Min Sheng, Lei Liu +2
Sparse code multiple access (SCMA) has been recently proposed for the future wireless networks, which allows non-orthogonal spectrum resource sharing and enables system overloading…
Effect of Densification on Cellular Network Performance with Bounded Pathloss Model
Junyu Liu, Min Sheng, Lei Liu +1
In this paper, we investigate how network densification influences the performance of downlink cellular network in terms of coverage probability (CP) and area spectral efficiency (…
Network Densification in 5G: From the Short-Range Communications Perspective
Junyu Liu, Min Sheng, Lei Liu +1
Besides advanced telecommunications techniques, the most prominent evolution of wireless networks is the densification of network deployment. In particular, the increasing access p…
Capacity-Achieving Iterative LMMSE Detection for MIMO-NOMA Systems
Lei Liu, Chau Yuen, Yong Liang Guan +1
This paper considers a Iterative Linear Minimum Mean Square Error (LMMSE) detection for the uplink Multiuser Multiple-Input and Multiple-Output (MU-MIMO) systems with Non-Orthogona…
Capacity-Achieving Iterative LMMSE Detection for MIMO-NOMA Systems
Lei Liu, Chau Yuen, Yong Liang Guan +1
This paper considers a iterative Linear Minimum Mean Square Error (LMMSE) detection for the uplink Multiuser Multiple-Input and Multiple-Output (MU-MIMO) systems with Non-Orthogona…
A Low-Complexity Gaussian Message Passing Iterative Detector for Massive MU-MIMO Systems
Lei Liu, Chau Yuen, Yong Liang Guan +2
This paper considers a low-complexity Gaussian Message Passing Iterative Detection (GMPID) method over a pairwise graph for a massive Multiuser Multiple-Input Multiple-Output (MU-M…