100 citations · 281 across the 13 of their papers we have counts for
14 papers
Generalized Linear Systems with OAMP/VAMP Receiver: Achievable Rate and Coding Principle
Lei Liu, Yuhao Chi, Ying Li +1
The generalized linear system (GLS) has been widely used in wireless communications to evaluate the effect of nonlinear preprocessing on receiver performance. Generalized approxima…
Capacity Optimal Coded Generalized MU-MIMO
Yuhao Chi, Lei Liu, Guanghui Song +3
With the complication of future communication scenarios, most conventional signal processing technologies of multi-user multiple-input multiple-output (MU-MIMO) become unreliable,…
Capacity Optimal Generalized Multi-User MIMO: A Theoretical and Practical Framework
Yuhao Chi, Lei Liu, Guanghui Song +3
Conventional multi-user multiple-input multiple-output (MU-MIMO) mainly focused on Gaussian signaling, independent and identically distributed (IID) channels, and a limited number…
User Activity Detection and Channel Estimation for Grant-Free Random Access in LEO Satellite-Enabled Internet-of-Things
Zhaoji Zhang, Ying Li, Chongwen Huang +4
With recent advances on the dense low-earth orbit (LEO) constellation, LEO satellite network has become one promising solution to providing global coverage for Internet-of-Things (…
A New Insight into GAMP and AMP
Lei Liu, Ying Li, Chongwen Huang +2
A concise expectation propagation (EP) based message passing algorithm (MPA) is derived for the general measurement channel. By neglecting some high-order infinitesimal terms, the…
Fixed-Symbol Aided Random Access Scheme for Machine-to-Machine Communications
Zhaoji Zhang, Ying Li, Lei Liu +1
The massiveness of devices in crowded Machine-to-Machine (M2M) communications brings new challenges to existing random-access (RA) schemes, such as heavy signaling overhead and sev…
Capacity-Achieving MIMO-NOMA: Iterative LMMSE Detection
Lei Liu, Yuhao Chi, Chau Yuen +2
This paper considers a low-complexity iterative Linear Minimum Mean Square Error (LMMSE) multi-user detector for the Multiple-Input and Multiple-Output system with Non-Orthogonal M…
Gaussian Message Passing for Overloaded Massive MIMO-NOMA
Lei Liu, Chau Yuen, Yong Liang Guan +2
This paper considers a low-complexity Gaussian Message Passing (GMP) scheme for a coded massive Multiple-Input Multiple-Output (MIMO) systems with Non-Orthogonal Multiple Access (m…
Asymptotically Optimal Estimation Algorithm for the Sparse Signal with Arbitrary Distributions
Chongwen Huang, Lei Liu, Chau Yuen
In this paper, we propose a sparse signal estimation algorithm that is suitable for many wireless communication systems, especially for the future millimeter wave and underwater co…
Practical MIMO-NOMA: Low Complexity & Capacity-Approaching Solution
Yuhao Chi, Lei Liu, Guanghui Song +3
MIMO-NOMA combines Multiple-Input Multiple-Output (MIMO) and Non-Orthogonal Multiple Access (NOMA), which can address heterogeneous challenges, such as massive connectivity, low la…
Message Passing in C-RAN: Joint User Activity and Signal Detection
Yuhao Chi, Lei Liu, Guanghui Song +3
In cloud radio access network (C-RAN), remote radio heads (RRHs) and users are uniformly distributed in a large area such that the channel matrix can be considered as sparse. Based…
Iterative Channel Estimation Using LSE and Sparse Message Passing for MmWave MIMO Systems
Chongwen Huang, Lei Liu, Chau Yuen +1
We propose an iterative channel estimation algorithm based on the Least Square Estimation (LSE) and Sparse Message Passing (SMP) algorithm for the Millimeter Wave (mmWave) MIMO sys…
Gaussian Message Passing Iterative Detection for MIMO-NOMA Systems with Massive Access
Lei Liu, Chau Yuen, Yong Liang Guan +2
This paper considers a low-complexity Gaussian Message Passing Iterative Detection (GMPID) algorithm for Multiple-Input Multiple-Output systems with Non-Orthogonal Multiple Access…
Convergence Analysis and Assurance for Gaussian Message Passing Iterative Detector in Massive MU-MIMO Systems
Lei Liu, Chau Yuen, Yong Liang Guan +2
This paper considers a low-complexity Gaussian Message Passing Iterative Detection (GMPID) algorithm for massive Multiuser Multiple-Input Multiple-Output (MU-MIMO) system, in which…