48 citations · 138 across the 20 of their papers we have counts for
7 papers · 2 filters
Energy-Efficient Cell-Free Network Assisted by Hybrid RISs
Wanting Lyu, Yue Xiu, Songjie Yang +2
In this letter, we investigate a cell-free network aided by hybrid reconfigurable intelligent surfaces (RISs), which consists of a mixture of passive and active elements that are c…
Channel Estimation for Reconfigurable Intelligent Surface-Assisted Cell-Free Communications
Songjie Yang, Chenfei Xie, Mingwei Wang +1
Recent research has focused on reconfigurable intelligent surface (RIS)-assisted cell-free systems with the goal of enhancing coverage and lowering the cost of cell-free networks.…
Bayesian Optimization-Based Beam Alignment for MmWave MIMO Communication Systems
Songjie Yang, Baojuan Liu, Zhiqin Hong +1
Due to the very narrow beam used in millimeter wave communication (mmWave), beam alignment (BA) is a critical issue. In this work, we investigate the issue of mmWave BA and present…
Fast Compressive Channel Estimation for MmWave MIMO Hybrid Beamforming Systems
Songjie Yang, Chenfei Xie, Dongli Wang +1
Given the high degree of computational complexity of the channel estimation technique based on the conventional one-dimensional (1-D) compressive sensing (CS) framework employed in…
Low-complexity Sparse Array Synthesis Based on Off-grid Compressive Sensing
Songjie Yang, Baojuan Liu, Zhiqin Hong +1
A novel sparse array synthesis method for non-uniform planar arrays is proposed, which belongs to compressive sensing (CS)-based systhesis. Particularly, we propose an off-grid ref…
Age Minimization in Outdoor and Indoor Communications with Relay-aided Dual RIS
Wanting Lyu, Yue Xiu, Yang Zhao +2
In this paper, we investigate an outdoor and indoor wireless communication network with the assistance of a novel relay-aided double-sided reconfigurable intelligent surface (RIS).…
Weighted Sum Age of Information Minimization in Wireless Networks with Aerial IRS
Wanting Lyu, Yue Xiu, Songjie Yang +2
In this letter, we analyze a terrestrial wireless communication network assisted by an aerial intelligent reflecting surface (IRS). We consider a packet scheduling problem at the g…