39 citations · 52 across the 10 of their papers we have counts for
11 papers
Discerning and Enhancing the Weighted Sum-Rate Maximization Algorithms in Communications
Zepeng Zhang, Ziping Zhao, Kaiming Shen +2
Weighted sum-rate (WSR) maximization plays a critical role in communication system design. This paper examines three optimization methods for WSR maximization, which ensure converg…
ASGNN: Graph Neural Networks with Adaptive Structure
Zepeng Zhang, Songtao Lu, Zengfeng Huang +1
The graph neural network (GNN) models have presented impressive achievements in numerous machine learning tasks. However, many existing GNN models are shown to be vulnerable to adv…
Towards Understanding Graph Neural Networks: An Algorithm Unrolling Perspective
Zepeng Zhang, Ziping Zhao
The graph neural network (GNN) has demonstrated its superior performance in various applications. The working mechanism behind it, however, remains mysterious. GNN models are desig…
Rate Maximizations for Reconfigurable Intelligent Surface-Aided Wireless Networks: A Unified Framework via Block Minorization-Maximization
Zepeng Zhang, Ziping Zhao
The reconfigurable intelligent surface (RIS) has arose an upsurging research interest recently due to its promising outlook in 5G-and-beyond wireless networks. With the assistance…
Joint Design of Transmit Waveforms and Receive Filters for MIMO Radar via Manifold Optimization
Huanyu Zhang, Ziping Zhao
The problem of joint design of transmit waveforms and receive filters is desirable in many application scenarios of multiple-input multiple-output (MIMO) radar systems. In this pap…
Sparse Reduced Rank Regression With Nonconvex Regularization
Ziping Zhao, Daniel P. Palomar
In this paper, the estimation problem for sparse reduced rank regression (SRRR) model is considered. The SRRR model is widely used for dimension reduction and variable selection wi…
Optimal Portfolio Design for Statistical Arbitrage in Finance
Ziping Zhao, Rui Zhou, Zhongju Wang +1
In this paper, the optimal mean-reverting portfolio (MRP) design problem is considered, which plays an important role for the statistical arbitrage (a.k.a. pairs trading) strategy…
MIMO Transmit Beampattern Matching Under Waveform Constraints
Ziping Zhao, Daniel P. Palomar
In this paper, the multiple-input multiple-output (MIMO) transmit beampattern matching problem is considered. The problem is formulated to approximate a desired transmit beampatter…
Robust Maximum Likelihood Estimation of Sparse Vector Error Correction Model
Ziping Zhao, Daniel P. Palomar
In econometrics and finance, the vector error correction model (VECM) is an important time series model for cointegration analysis, which is used to estimate the long-run equilibri…
Mean-Reverting Portfolio Design with Budget Constraint
Ziping Zhao, Daniel P. Palomar
This paper considers the mean-reverting portfolio design problem arising from statistical arbitrage in the financial markets. We first propose a general problem formulation aimed a…
Mean-Reverting Portfolio Design via Majorization-Minimization Method
Ziping Zhao, Daniel P. Palomar
This paper considers the mean-reverting portfolio design problem arising from statistical arbitrage in the financial markets. The problem is formulated by optimizing a criterion ch…