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To reach a cost-efficient 5G architecture, the use of remote radio heads connected through a fronthaul to baseband controllers is a promising solution. However, the fronthaul links must support high bit rates as 5G networks are projected to…

信息论 · 计算机科学 2017-09-18 Kamil Senel , Emil Björnson , Erik G. Larsson

The cloud-radio access network (CRAN) is expected to be the core network architecture for next generation mobile radio systems. In this paper, we consider the downlink of a CRAN formed of one central processor (the cloud) and several…

信息论 · 计算机科学 2016-01-28 Oussama Dhifallah , Hayssam Dahrouj , Tareq Y. Al-Naffouri , Mohamed-Slim Alouini

Small cells have been proposed as a vehicle for wireless networks to keep up with surging demand. Small cells come with a significant challenge of providing backhaul to transport data to(from) a gateway node in the core network. Fiber based…

信息论 · 计算机科学 2014-04-11 Muhammad Nazmul Islam , Ashwin Sampath , Atul Maharshi , Ozge Koymen , Narayan B. Mandayam

This work studies multigroup multicasting transmission in cloud radio access networks (C-RANs) with simultaneous wireless information and power transfer, where densely packed remote radio heads (RRHs) cooperatively provide information and…

信息论 · 计算机科学 2021-06-10 Fangqing Tan , Peiran Wu , Yik-Chung Wu , Minghua Xia

Using drones as flying base stations is a promising approach to enhance the network coverage and area capacity by moving supply towards demand when required. However deployment of such base stations can face some restrictions that need to…

网络与互联网体系结构 · 计算机科学 2017-03-21 Elham Kalantari , Muhammad Zeeshan Shakir , Halim Yanikomeroglu , Abbas Yongacoglu

A non-regenerative dual-hop wireless system based on a distributed space-time coding strategy is considered. It is assumed that each relay retransmits an appropriately scaled space-time coded version of its received signal. The main goal of…

信息论 · 计算机科学 2016-11-18 Jamshid Abouei , Hossein Bagheri , Amir K. Khandani

This paper considers networked sensing in cellular network, where multiple base stations (BSs) first compress their received echo signals from multiple targets and then forward the quantized signals to the central unit (CU) via…

信号处理 · 电气工程与系统科学 2024-09-09 Weifeng Zhu , Shuowen Zhang , Liang Liu

We consider a heterogeneous network (HetNet) of base stations (BSs) connected via a backhaul network of routers and wired/wireless links with limited capacity. The optimal provision of such networks requires proper resource allocation…

信息论 · 计算机科学 2013-12-20 Wei-Cheng Liao , Mingyi Hong , Hamid Farmanbar , Xu Li , Zhi-Quan Luo , Hang Zhang

In this paper, we consider an uplink heterogeneous cloud radio access network (H-CRAN), where a macro base station (BS) coexists with many remote radio heads (RRHs). For cost-savings, only the BS is connected to the baseband unit (BBU) pool…

信息论 · 计算机科学 2019-01-08 Wenchao Xia , Jun Zhang , Tony Q. S. Quek , Shi Jin , Hongbo Zhu

The use of Terahertz (THz) frequency bands for data transmissions between the core network and an access point can be promising for next generation wireless systems. In this paper, we analyze the performance of a dual-hop relaying for…

信息论 · 计算机科学 2020-12-29 Pranay Bhardwaj , S. M. Zafaruddin

This paper considers the uplink of a cloud radio access network (C-RAN) comprised of several multi-antenna remote radio units (RUs) which compress the signals that they receive from multiple mobile users (MUs) and forward them to a CU via…

信息论 · 计算机科学 2018-08-16 Marzieh Najafi , Vahid Jamali , Derrick Wing Kwan Ng , Robert Schober

In this paper, we study a network of distributed radar sensors that collaboratively perform sensing tasks by transmitting their quantized radar signals over capacity-constrained fronthaul links to a central unit for joint processing. We…

信号处理 · 电气工程与系统科学 2024-09-27 Christian Eckrich , Abdelhak M. Zoubir , Vahid Jamali

This letter studies a cloud radio access network (C-RAN) with multiple intelligent reflecting surfaces (IRS) deployed between users and remote radio heads (RRH). Specifically, we consider the uplink transmission where each RRH quantizes the…

信号处理 · 电气工程与系统科学 2021-04-12 Yu Zhang , Xuelu Wu , Hong Peng , Caijun Zhong , Xiaoming Chen

This paper investigates the deployment of radio stripe systems for indoor radio-frequency (RF) wireless power transfer (WPT) in line-of-sight near-field scenarios. The focus is on environments where energy demand is concentrated in specific…

信号处理 · 电气工程与系统科学 2025-09-23 Amirhossein Azarbahram , Onel L. A. López , Petar Popovski , Matti Latva-aho

Unmanned Aerial Vehicles (UAVs) acting as access points in cellular networks require wireless backhauls to the core network. In this paper we employ stochastic geometry to carry out an analysis of the UAV backhaul performance that can be…

网络与互联网体系结构 · 计算机科学 2017-10-31 Boris Galkin , Jacek Kibiłda , Luiz A. DaSilva

The penetration of wireless broadband services in remote areas has primarily been limited due to the lack of economic incentives that service providers encounter in sparsely populated areas. Besides, wireless backhaul links like satellite…

网络与互联网体系结构 · 计算机科学 2015-05-29 Ratnesh Kumbhkar , Muhammad Nazmul Islam , Narayan B. Mandayam , Ivan Seskar

Downlink joint transmission by a cluster of remote radio heads (RRHs) is an essential technique for enhancing throughput in future cellular networks. This method requires global channel state information (CSI) at the processing unit that…

信息论 · 计算机科学 2021-11-30 Niv Arad , Yair Noam

The fog radio access network (Fog-RAN) has been considered a promising wireless access architecture to help shorten the communication delay and relieve the large data delivery burden over the backhaul links. However, limited by conventional…

信息论 · 计算机科学 2021-03-04 Jun Yu , Rui Wang , Jun Wu

We consider wireless networks of remote radio heads (RRH) with large antenna-arrays, operated in TDD, with uplink (UL) training and channel-reciprocity based downlink (DL) transmission. To achieve large area spectral efficiencies, we…

信息论 · 计算机科学 2017-01-26 Ozgun Y. Bursalioglu , Chenwei Wang , Haralabos Papadopoulos , Giuseppe Caire

Wireless backhaul allows densification of mobile networks without incurring additional fiber deployment cost. This, in turn, leads to high spatial reuse, which is a significant tool to meet increasing wireless demand in 5G networks.…

信息论 · 计算机科学 2018-04-03 Muhammad Nazmul Islam , Navid Abedini , Georg Hampel , Sundar Subramanian , Junyi Li