Two-stage channel estimation for semi-passive RIS-assisted millimeter wave systems

C Peng, H Deng, H Xiao, Y Qian, W Zhang, Y Zhang - Sensors, 2022 - mdpi.com
In a reconfigurable intelligent surface (RIS) assisted millimeter Wave (mmWave)
communication system, the channel coefficient increases exponentially with the number of …

Channel estimation for RIS-assisted MIMO systems in millimeter wave communications

Y Liu, H Deng, C Peng - Sensors, 2023 - mdpi.com
The large number of estimated parameters in a reconfigurable intelligent surface (RIS)
makes it difficult to achieve accurate channel estimation accuracy in 6G. Therefore, we …

Spectral Efficiency Optimization of Uplink Millimeter Wave MIMO-NOMA Systems

Y Zhang, H Deng, J He, Z Zhu, C Peng, H Xiao - Sensors, 2022 - mdpi.com
In this paper, we considered uplink communication, focusing on the improvement of spectral
efficiency (SE) for millimeter wave (mmWave) multiple-input multiple-output non-orthogonal …

[PDF][PDF] 一种非正交多址接入迭代优化混合预编码算法

刘雯雯, 吴君钦, 谢子宣 - 科学技术与工程, 2023 - stae.com.cn
摘要为了使大规模毫米波(millimeter wave, mmWave) 多输入多输出(multiple-input multiple-
output, MIMO) 系统获得高频谱效率和高能量效率, 采用非正交多址接入迭代优化算法和簇首 …

Defense against SSDF Attack and PUE Attack in CR-Internet of Vehicles (IoVs) for Millimeter Wave Massive MIMO Beamforming Systems

D Pari, J Natarajan - Symmetry, 2022 - mdpi.com
The Internet of Vehicles (IoV) is witnessed to play the leading role in the future of Intelligent
Transportation Systems (ITS). Though many works have focused on IoV improvement, there …

Optimized CNN and adaptive RBFNN for channel estimation and hybrid precoding approaches for multi user millimeter wave massive MIMO

PT Rajan. B, N Muthukumaran - International Journal of Electronics, 2024 - Taylor & Francis
The millimetre-wave (mmWave) communication satisfies the demand for high data rates due
to the characteristic of wide bandwidth. Using massive multiple-input multiple-output (MIMO) …

Efficient Precoding and Power Allocation Techniques for Maximizing Spectral Efficiency in Beamspace MIMO-NOMA Systems

Y Liu, L Si, Y Wang, B Zhang, W Xu - Sensors, 2023 - mdpi.com
Beamspace MIMO-NOMA is an effective way to improve spectral efficiency. This paper
focuses on a downlink non-orthogonal multiple access (NOMA) transmission scheme for a …

Beamforming optimization for intelligent reflecting surface-assisted MIMO systems

W Zhang, H Deng, Y Li, Z Zhu, C Peng, G Liu - Symmetry, 2022 - mdpi.com
To improve the spectral efficiency of symmetry-based intelligent reconfigurable surface (IRS)-
assisted MIMO communication systems, this paper investigates the joint precoding and …

Optimized CNN and Adaptive RBFNN for channel Estimation and Hybrid Precoding approaches for Multi User Millimeter wave Massive MIMO

N Muthukumaran - 2023 - researchsquare.com
Abstract The Millimetre Wave (mmWave) communication satisfy the demand for high data
rates due to the characteristic of wide bandwidth. Using massive Multiple-Input Multiple …