Reconfigurable intelligent surfaces for 6G IoT wireless positioning: A contemporary survey

R Chen, M Liu, Y Hui, N Cheng… - IEEE Internet of Things …, 2022‏ - ieeexplore.ieee.org
The sixth-generation (6G) wireless communication system is expected to integrate
communication, intelligence, sensing, positioning, control, and calculation to adapt to time …

Joint channel estimation and data detection for hybrid RIS aided millimeter wave OTFS systems

M Li, S Zhang, Y Ge, F Gao… - IEEE Transactions on …, 2022‏ - ieeexplore.ieee.org
For high mobility communication scenario, the recently emerged orthogonal time frequency
space (OTFS) modulation introduces a new delay-Doppler domain signal space, and can …

A survey on optimal channel estimation methods for RIS-aided communication systems

SF Drampalou, NI Miridakis, HC Leligou, PA Karkazis - Signals, 2023‏ - mdpi.com
Next-generation wireless communications aim to utilize mmWave/subTHz bands. In this
regime, signal propagation is vulnerable to interferences and path losses. To overcome this …

Doppler mitigation method aided by reconfigurable intelligent surfaces for high-speed channels

W Wu, H Wang, W Wang, R Song - IEEE Wireless …, 2021‏ - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is an attractive solution to smart radio environment,
which has a promising potential to mitigate Doppler effect for mobile channels. In this letter …

Two-stage multiarmed bandit for reconfigurable intelligent surface aided millimeter wave communications

EM Mohamed, S Hashima, K Hatano, SA Aldossari - Sensors, 2022‏ - mdpi.com
A reconfigurable intelligent surface (RIS) is a promising technology that can extend short-
range millimeter wave (mmWave) communications coverage. However, phase shifts (PSs) of …

Double IRSs aided massive MIMO channel estimation and spectrum efficiency maximization for high-speed railway communications

T Li, H Tong, Y Xu, X Su, G Qiao - IEEE Transactions on …, 2022‏ - ieeexplore.ieee.org
Intelligent reflecting surface (IRS)-enhanced wireless communication is one of the critical
technologies of the sixth generation mobile communication, which has recently emerged as …

Doppler effect mitigation using reconfigurable intelligent surfaces with hardware impairments

K Wang, CT Lam, BK Ng - 2021 IEEE Globecom Workshops …, 2021‏ - ieeexplore.ieee.org
In this paper, we analyze the effects of different types of hardware impairments (HWI),
including RIS-HWI, transceiver HWI, phase quantization errors and random failures, on …

Semi-passive reconfigurable intelligent surfaces enabled communications: A comprehensive survey

S Balgabay, S Arzykulov, G Nauryzbayev - Authorea Preprints, 2022‏ - techrxiv.org
Along with the advancement of edge computing and next-generation cellular networks, the
demand for wireless communication systems is increasing significantly. The fifth-generation …

Hybrid active-and-passive relaying model for 6G-IoT greencom networks with SWIPT

S Gautam, S Solanki, SK Sharma, S Chatzinotas… - Sensors, 2021‏ - mdpi.com
In order to support a massive number of resource-constrained Internet-of-Things (IoT)
devices and machine-type devices, it is crucial to design a future beyond 5G/6G wireless …

Physical layer enhancement for next-generation railway communication systems

Q Li, JC Sibel, M Berbineau, I Dayoub, F Gallée… - IEEE …, 2022‏ - ieeexplore.ieee.org
This paper presents an overview of the challenges and state-of-the-art physical layer
enhancement designs for next-generation railway communication, also known as high …