Results 61 to 70 of about 1,118 (191)

Cell-Free mmWave Massive MIMO Systems With Low-Capacity Fronthaul Links and Low-Resolution ADC/DACs [PDF]

, 2022
In this paper, we consider the uplink channel estimation phase and downlink data transmission phase of cell-free millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems with low-capacity fronthaul links and low-resolution analog-to-
Bennis, Mehdi, Kim, In-soo, Choi, Junil
core   +1 more source

Sum rate maximization in UAV-assisted data harvesting network supported by CF-mMIMO system exploiting statistical CSI

Digital Communications and Networks
Unmanned Aerial Vehicles (UAVs) have been considered to have great potential in supporting reliable and timely data harvesting for Sensor Nodes (SNs) from an Internet of Things (IoT) perspective.
Linlin Xu, Qi Zhu, Wenchao Xia, Jun Zhang, Gan Zheng, Hongbo Zhu   +5 more
doaj   +1 more source

Cell-Free Millimeter-Wave Massive MIMO Systems With Limited Fronthaul Capacity

IEEE Access, 2019
Network densification, massive multiple-input multiple-output (MIMO), and millimeter-wave (mmWave) bands have recently emerged as some of the physical layer enablers for the future generations of wireless communication networks (5G and beyond).
Guillem Femenias, Felip Riera-Palou
doaj   +1 more source

Novel Digital Radio Over Fiber (DRoF) System With Data Compression for Neutral-Host Fronthaul Applications

IEEE Access, 2020
Digital radio-over-fibre transmission has been studied extensively as a way of providing seamless last-mile wireless connectivity by carrying digitised radio frequency (RF) services over broadband optical infrastructures.
Wen Li, Aixin Chen, Tongyun Li, Richard V. Penty, Ian H. White, Xuefeng Wang   +5 more
doaj   +1 more source

Real-Time Experimental Demonstration of Hybrid FSO/Wireless Transmission Based on Coherent Detection and Delta-Sigma Modulation

IEEE Photonics Journal, 2022
For the fronthaul link in the fifth-generation (5G) wireless networks, optical fiber is one of the most widely used medium, owing to its large bandwidth and low transmission loss.
Xueyuan Ao, Qirun Fan, Linsheng Zhong, Tianjin Mei, Yuanxiang Wang, Qi Yang, Xiaoxiao Dai, Chen Liu, Mengfan Cheng, Lei Deng, Deming Liu   +10 more
doaj   +1 more source

Genetic Algorithm Assisted Hybrid Beamforming for Wireless Fronthaul

CoRR, 2018
This paper proposes a genetic algorithm assisted hybrid signal to leakage plus noise ratio (SLNR) beamforming design for wireless fronthaul scenario. The digital precoder of the proposed hybrid SLNR beamforming is expressed in closed-form. Highly limited phase resolution (one-bit resolution) is assumed at the phase shifters at the analog precoder.
openaire   +2 more sources

First Real‐Time Softwarization of Complete Coherent DSP Stack with Gardner Timing and Clock Recovery

Electronics Letters, Volume 62, Issue 1, January/December 2026.
ABSTRACT This work demonstrates the first fully softwarized coherent receiver digital signal processing stack implemented on a general‐purpose graphic processing unit (GPU) platform. By introducing a data‐parallel GPU implementation for Gardner‐based timing and clock recovery (TCR), the system achieves complete real‐time receiver operation without ...
Sang‐Yuep Kim, Takahiro Suzuki, Jun‐ichi Kani, Tatsuya Shimada   +3 more
wiley   +1 more source

Joint Time Synchronisation and Localisation Method by TDOA Observation in 5G Networks

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This work proposes a method for joint time synchronisation and localisation problems and proposes to obtain the initial values of the alternating iteration algorithm through solving the MVIE problem. The simulations showcase the satisfying positioning accuracy and clock synchronisation accuracy of the proposed method.
Qiao Liu, Yutong Tian, Zhihang Qu, Yong Li   +3 more
wiley   +1 more source

Bio‐Nano Sensor‐Centric Lightweight AI for Real‐Time Anomaly Detection Under 6G Edge Architectures

Journal of Sensors, Volume 2026, Issue 1, 2026.
By enabling the detection of molecular, biochemical, and physiological signals at micro‐ and nano‐scales, bio‐nano sensor networks (BNSNs) have emerged as a transformative sensing paradigm for environmental surveillance, biomedical monitoring, and healthcare.
Ayesha Siddika Mourin, Pramita Mishra
wiley   +1 more source

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, Volume 6, Issue 7, July 2025.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source