63 citations · 70 across the 6 of their papers we have counts for
6 papers
Regularized Non-monotone Submodular Maximization
Cheng Lu, Wenguo Yang, Suixiang Gao
In this paper, we present a thorough study of maximizing a regularized non-monotone submodular function subject to various constraints, i.e., $\max \{ g(A) - \ell(A) : A \in \mathc…
Implicit Normalizing Flows
Cheng Lu, Jianfei Chen, Chongxuan Li +2
Normalizing flows define a probability distribution by an explicit invertible transformation . In this work, we present implicit…
On the Equivalence of Semidifinite Relaxations for MIMO Detection with General Constellations
Ya-Feng Liu, Zi Xu, Cheng Lu
The multiple-input multiple-output (MIMO) detection problem is a fundamental problem in modern digital communications. Semidefinite relaxation (SDR) based algorithms are a popular…
An Enhanced SDR based Global Algorithm for Nonconvex Complex Quadratic Programs with Signal Processing Applications
Cheng Lu, Ya-Feng Liu, Jing Zhou
In this paper, we consider a class of nonconvex complex quadratic programming (CQP) problems, which find a broad spectrum of signal processing applications. By using the polar coor…
Tightness of a new and enhanced semidefinite relaxation for MIMO detection
Cheng Lu, Ya-Feng Liu, Wei-Qiang Zhang +1
In this paper, we consider a fundamental problem in modern digital communications known as multi-input multi-output (MIMO) detection, which can be formulated as a complex quadratic…
An Efficient Global Algorithm for Single-Group Multicast Beamforming
Cheng Lu, Ya-Feng Liu
Consider the single-group multicast beamforming problem, where multiple users receive the same data stream simultaneously from a single transmitter. The problem is NP-hard and all…