Results 81 to 90 of about 4,937 (184)

Key technology and deployment strategy of 5G fronthaul transport networks

Dianxin kexue, 2019
As one of the frontier communication technology,5G mobile communication technology has attracted much attention in China and abroad.Before large-scale deployment of 5G base station,the transport network must be planned and ready in advance.Four kinds of ...
Fengchao FU, Peng WANG, Yu MAO, Yongmei HUANG, Yuanbao XIE, Aihua ZHANG, Guoqiang LIN   +6 more
doaj   +2 more sources

Design and Optimization of a Phase‐Tunable Mixer Based on Cascaded Dual‐Drive Mach–Zehnder Modulator Considering Nonlinear Behavior of Modulator

International Journal of Optics, Volume 2025, Issue 1, 2025.
This paper proposes a novel phase‐tunable mixer based on a cascaded dual‐drive Mach–Zehnder modulator (DDMZM), designed to address the critical need for simultaneous frequency mixing and precise phase control in phased array antennas. Unlike conventional mixers, the proposed structure uniquely combines frequency mixing and phase tuning, enabling ...
Ebrahim Darabi, Heidar Keshavarz, Stefan Wabnitz   +2 more
wiley   +1 more source

5G transport network requirements for the next generation fronthaul interface

EURASIP Journal on Wireless Communications and Networking, 2017
To meet the requirements of 5G mobile networks, several radio access technologies, such as millimeter wave communications and massive MIMO, are being proposed.
J. Bartelt, N. Vucic, D. Camps-Mur, E. Garcia-Villegas, I. Demirkol, A. Fehske, M. Grieger, A. Tzanakaki, J. Gutiérrez, E. Grass, G. Lyberopoulos, G. Fettweis   +11 more
doaj   +1 more source

Delay aware resource allocation in ORAN through network optimization

IET Wireless Sensor Systems, Volume 14, Issue 6, Page 528-538, December 2024.
This Figure shows the basic design of open radio access network architecture, in which the virtual machines collaborate within the physical servers. Abstract A multi variable resource allocation problem is investigated in network environments, specifically focusing on the consideration of quality of service in open radio access network.
Basit N. Khalaf, Wisam Hasan Ali, Raad S. Alhumaima, Haider Ali Jasim Alshamary   +3 more
wiley   +1 more source

Fronthaul Load Balancing in Energy Harvesting Powered Cloud Radio Access Networks

IEEE Access, 2017
Enhanced with wireless power transfer capability, cloud radio access network (C-RAN) enables energy-restrained mobile devices to function uninterruptedly.
Cheng Qin, Wei Ni, Hui Tian, Ren Ping Liu   +3 more
doaj   +1 more source

Power Over Fiber and Analog Radio Over Fiber Simultaneous Transmission Over Long Distance in Single Mode, Multicore, and Hollow Core Fibers

Laser &Photonics Reviews, Volume 18, Issue 8, August 2024.
Simultaneous Power over Fiber delivery and transmission of 5G New Radio over a single Hollow Core or Multicore Fiber is demonstrated at distances of ten kilometers, yielding promising results compared to Single Mode Fibers. Optically powering a Bluetooth Low Energy load while transmitting 256 QAM data on a 3 GHz RF signal with no degradation is ...
Rubén Altuna, Yongmin Jung, Periklis Petropoulos, Carmen Vázquez   +3 more
wiley   +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

Energy-Efficient Joint Design of Fronthaul and Edge Links for Cache-Aided C-RAN Systems with Wireless Fronthaul

Entropy, 2019
This work addresses the joint design of fronthaul and edge links for a cache-aided cloud radio access network (C-RAN) system with a wireless fronthaul link.
Junbeom Kim, Daesung Yu, Seung-Eun Hong, Seok-Hwan Park   +3 more
doaj   +1 more source

Flexible Baseband-Unit Aggregation Enabled by Reconfigurable Multi-IF Over WDM Fronthaul

IEEE Photonics Journal, 2018
In cloud-radio access network, baseband-unit (BBU) aggregation schemes have been intensively discussed to improve the efficiency of resources in light traffic times.
Haiyun Xin, Hao He, Kuo Zhang, Syed Baqar Hussain, Weisheng Hu   +4 more
doaj   +1 more source

Deep Reinforcement Learning Based Joint Allocation Scheme in a TWDM-PON-Based mMIMO Fronthaul Network

IEEE Photonics Journal
In next-generation centralized or cloud radio access networks (C-RANs), time and wavelength division multiplexed passive optical network (TWDM-PON) has been well recognized as a promising candidate to build the mobile fronthaul. Considering the stringent
Yuansen Cheng, Yingjie Shao, Shifeng Ding, Chun-Kit Chan   +3 more
doaj   +1 more source