Results 61 to 70 of about 5,069 (173)

Energy‐Efficient Element Selection in RIS‐Assisted Backscatter Communication Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper investigates energy‐efficient reconfigurable intelligent surface (RIS) assisted ambient backscatter communication systems with energy‐harvesting tags. A low‐complexity RIS element selection strategy is developed to satisfy both energy‐harvesting and signal‐to‐interference‐plus‐noise ratio constraints while minimizing overall power ...
Mengistu A. Mulatu, Thembelihle Dlamini, Asrat M. Beyene   +2 more
wiley   +1 more source

A Constrained Deep Reinforcement Learning Framework for Beamforming Optimization With QoS Guarantees in RIS‐Assisted Symbiotic Radio Networks

IET Communications, Volume 20, Issue 1, January/December 2026.
To address the complex constrained optimization in time‐varying reconfigurable intelligent surface–assisted symbiotic radio networks, this paper proposes a novel deep reinforcement learning (DRL) approach integrating Lagrange dual optimization into deep deterministic policy gradient framework.
Jing Li, Wei Zhang, Jian Ma, Guoyun Cao, Yunfei Chen, Feihong Chu, Li Chen   +6 more
wiley   +1 more source

An analytical approach to SINR estimation in adjacent rectangular cells

, 2020
Signal-to-interference-plus-noise ratio (SINR) experienced by a mobile user is the key metric determining the throughput it receives over a certain wireless technology of interest.
Begishev V., Moltchanov D., Ometov A., Gaidamaka Y., Andreev S., Samuylov A., Kovalchukov R.   +6 more
core   +2 more sources

Correlation-based blind SINR estimation with statistical theoretic analysis for OFDM systems

EURASIP Journal on Advances in Signal Processing
A blind signal-to-interference-plus-noise ratio (SINR) estimation method is proposed for orthogonal frequency division multiplex (OFDM) systems in the presence of impulse noise over multipath fading channels.
Shunli Hong, Youming Li, Xiaolong Zhang, Yonghong Wu, Qiang Guo, Liang Li   +5 more
doaj   +1 more source

Performance Analysis of Directional Modulation With Finite-Quantized RF Phase Shifters in Analog Beamforming Structure

IEEE Access, 2019
The radio frequency (RF) phase shifter with finite quantization bits in analog beamforming (AB) structure forms quantization error (QE) and causes a performance loss of received signal to interference plus noise ratio (SINR) at the receiver (called Bob).
Jiayu Li, Ling Xu, Ping Lu, Tingting Liu, Zhihong Zhuang, Jinsong Hu, Feng Shu, Jiangzhou Wang   +7 more
doaj   +1 more source

Computationally Efficient Deep Learning Inference for High‐Rate Beamforming in Millimeter‐Wave Internet of Vehicles

IET Communications, Volume 20, Issue 1, January/December 2026.
ABSTRACT Millimeter‐wave (mmWave) Internet‐of‐Vehicles (IoV) communications rely on large antenna arrays to combat severe path loss and to provide high beamforming gains. However, practical vehicular deployments often adopt analog or hybrid beamforming with constant‐modulus constraints, leading to a highly non‐convex joint beamforming design problem ...
Haowen Zheng, Zihan Li, Jianxin Dai, Haifeng Tang, Xinyi Hui   +4 more
wiley   +1 more source

DA and NDA SINR estimation in non Gaussian noise

, 2015
In this paper, the problem of signal-to-interference plus noise ratio estimation over flat fading channels in non-Gaussian noise is addressed. Most previously published estimators assume the additive noise to be Gaussian.
Hamdi, K A; id_orcid, Almradi, A, Khairi Ashour Hamdi, Ahmed Almradi   +3 more
core   +1 more source

Performance Analysis of Visible Light Communication Using CMOS Sensors

Sensors, 2016
This paper elucidates the fundamentals of visible light communication systems that use the rolling shutter mechanism of CMOS sensors. All related information involving different subjects, such as photometry, camera operation, photography and image ...
Trong-Hop Do, Myungsik Yoo
doaj   +1 more source

UAV Trajectory and Bandwidth Allocation for Efficient Data Collection in Low‐Altitude Intelligent IoT: A Hierarchical DRL Approach

IET Communications, Volume 20, Issue 1, January/December 2026.
First, the proposed scenario incorporates interference, dynamic data volume of IoT nodes, and multiple types of obstacles. The entire task is hierarchically structured: the upper‐level makes flight trajectory decisions at a coarse temporal granularity, while the lower‐level makes bandwidth allocation decisions at a finer temporal granularity. Second, a
Zhenjia Xu, Xiaoling Zhang, Nan Qi, Guangxu Zhu, Xiaojie Li, Luliang Jia   +5 more
wiley   +1 more source

Transmission of wireless backhaul signal in a cellular system with small moving cells

EURASIP Journal on Wireless Communications and Networking, 2019
Deployment of small moving cells (SMCs) has been considered in advanced cellular systems, where wireless backhaul links are required between base stations and SMCs.
Hyoung-Keon Kim, Yong-Suk Byun, Geon-Woong Jung, Yong-Hwan Lee   +3 more
doaj   +1 more source