4 papers
Manifold Optimization Based Multi-user Rate Maximization Aided by Intelligent Reflecting Surface
Liyue Zhang, Qing Wang, Haozhi Wang +4
In this work, two problems associated with a downlink multi-user system are considered with the aid of intelligent reflecting surface (IRS): weighted sum-rate maximization and weig…
Study of Four-Dimensional DOA and Polarisation Estimation with Crossed-dipole and Tripole Arrays
Xiang Lan, Wei Liu, Henry Y. T. Ngan
Electromagnetic (EM) vector sensor arrays can track both the polarisation and direction of arrival (DOA) of the impinging signals. For linear crossed-dipole arrays, as shown by our…
An Improved DOA Estimation Method for a Mixture of Circular and Non-Circular Signals Based on Sparse Arrays
Jingjing Cai, Wei Liu, Ru Zong +1
Sparse arrays have attracted a lot of interests recently for their capability of providing more degrees of freedom than traditional uniform linear arrays. For a mixture of circular…
Quaternion-Valued Single-Phase Model for Three-Phase Power Systems
Xiaoming Gou, Zhiwen Liu, Wei Liu +2
In this work, a quaternion-valued model is proposed in lieu of the Clarke's α, βtransformation to convert three-phase quantities to a hypercomplex single-phase signal. The concaten…