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This correspondence paper investigates joint design of small base station (SBS) clustering, multicast beamforming for access and backhaul links, as well as frequency allocation in backhaul transmission to minimize the total power…

信号处理 · 电气工程与系统科学 2019-09-04 Jun Xu , Pengcheng Zhu , Jiamin Li , Xiaohu You

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

Breaking the fronthaul capacity limitations is vital to make cloud radio access network (C-RAN) scalable and practical. One promising way is aggregating several remote radio units (RRUs) as a cluster to share a fronthaul link, so as to…

信息论 · 计算机科学 2017-01-31 Liumeng Wang , Sheng Zhou

The cloud radio access network (C-RAN) provides high spectral and energy efficiency performances, low expenditures and intelligent centralized system structures to operators, which has attracted intense interests in both academia and…

信息论 · 计算机科学 2014-10-30 Jian Li , Mugen Peng , Aolin Cheng , Yuling Yu , Chonggang Wang

Cloud radio access network (C-RAN) and massive multiple-input-multiple-output (MIMO) are two key enabling technologies to meet the diverse and stringent requirements of the 5G use cases. In a C-RAN system with massive MIMO, fronthaul is…

信号处理 · 电气工程与系统科学 2018-10-11 Jobin Francis , Gerhard Fettweis

This work studies the robust design of downlink precoding for cloud radio access network (C-RAN) in the presence of asynchronism among remote radio heads (RRHs). Specifically, a C-RAN downlink system is considered in which non-ideal…

信息论 · 计算机科学 2016-09-21 Seok-Hwan Park , Osvaldo Simeone , Shlomo Shamai

The limited fronthaul capacity imposes a challenge on the uplink of centralized radio access network (C-RAN). We propose to boost the fronthaul capacity of massive multiple-input multiple-output (MIMO) aided C-RAN by globally optimizing the…

信息论 · 计算机科学 2019-01-01 Jiankang Zhang , Sheng Chen , Xinying Guo , Jia Shi , Lajos Hanzo

In this paper, a joint beamforming design for max-min fair simultaneous wireless information and power transfer (SWIPT) is investigated in a green cloud radio access network (Cloud-RAN) with millimeter wave (mmWave) wireless fronthaul. To…

信息论 · 计算机科学 2018-05-08 Zhao Chen , Haisheng Xu , Lin X. Cai , Yu Cheng

This paper investigates the fronthaul compression problem in a user-centric cloud radio access network, in which single-antenna users are served by a central processor (CP) cooperatively via a cluster of remote radio heads (RRHs). To…

信息论 · 计算机科学 2024-03-15 Ruihua Qiao , Tao Jiang , Wei Yu

The cloud radio access network (C-RAN) is a promising network architecture for future mobile communications, and one practical hurdle for its large scale implementation is the stringent requirement of high capacity and low latency fronthaul…

信息论 · 计算机科学 2015-06-23 Xiongbin Rao , Vincent K. N. Lau

Cloud-radio access network (C-RAN) can enable cell-less operation by connecting distributed remote radio heads (RRHs) via fronthaul links to a powerful central unit. In conventional C-RAN, baseband signals are forwarded after quantization/…

信息论 · 计算机科学 2021-03-23 Daniyal Amir Awan , Renato L. G. Cavalcante , Zoran Utkovski , Slawomir Stanczak

Cloud radio access network (CRAN), in which remote radio heads (RRHs) are deployed to serve users in a target area, and connected to a central processor (CP) via limited-capacity links termed the fronthaul, is a promising candidate for the…

信息论 · 计算机科学 2016-12-14 Reuben George Stephen , Rui Zhang

In this paper, we address the problem of power-efficient resource management in Cloud Radio Access Networks (C-RANs). Specifically, we consider the case where Remote Radio Heads (RRHs) perform data transmission, and signal processing is…

网络与互联网体系结构 · 计算机科学 2019-04-25 Salvatore D'Oro , Marcelo Antonio Marotta , Cristiano Bonato Both , Luiz DaSilva , Sergio Palazzo

In this paper, we consider a green cloud radio access network (C-RAN) with simultaneous wireless and power transfer ability. In order to reduce the energy consumed for updating the chanel state information (CSI), energy users are divided…

网络与互联网体系结构 · 计算机科学 2018-03-30 Xu Li , Zhao Chen , Aurobinda Laha , Ziru Chen , Yu Cheng , Lin X. Cai

The emergence of Centralized-RAN (C-RAN) has revolutionized mobile network infrastructure, offering streamlined cell-site engineering and enhanced network management capabilities. As C-RAN gains momentum, the focus shifts to optimizing…

网络与互联网体系结构 · 计算机科学 2024-06-25 Marcello Morini , Eugenio Moro , Ilario Filippini , Danilo De Donno , Antonio Capone

In this correspondence, we propose hierarchical high-altitude platform (HAP)-low-altitude platform (LAP) networks with the aim of maximizing the sum-rate of ground user equipments (UEs). The multiple aerial radio units (RUs) mounted on HAPs…

系统与控制 · 电气工程与系统科学 2023-12-08 Jeongbin Kim , Seongah Jeong , Seonghoon Yoo , Woong Son , Joonhyuk Kang

This paper studies the resource allocation algorithm design for secure information and renewable green energy transfer to mobile receivers in distributed antenna communication systems. In particular, distributed remote radio heads…

信息论 · 计算机科学 2015-05-12 Derrick Wing Kwan Ng , Robert Schober

The implementation of a Cloud Radio Access Network (C-RAN) with Full Dimensional (FD)-MIMO is faced with the challenge of controlling the fronthaul overhead for the transmission of baseband signals as the number of horizontal and vertical…

信息论 · 计算机科学 2016-11-15 Jinkyu Kang , Osvaldo Simeone , Joonhyuk Kang , Shlomo Shamai

Cloud-radio access networks (C-RAN) help overcoming the scarcity of radio resources by enabling dense deployment of base-stations (BSs), and connecting them to a central-processor (CP). This paper considers the downlink of a C-RAN, where…

信息论 · 计算机科学 2019-04-23 Alaa Alameer Ahmad , Hayssam Dahrouj , Anas Chaaban , Aydin Sezgin , Mohamed-Slim Alouini

There is a widely held belief that future Radio Access Network (RAN) architectures will be characterized by increased levels of virtualization, whereby base station functionalities, traditionally residing at a single location, will be…

网络与互联网体系结构 · 计算机科学 2022-05-18 Sandra Lagén , Xavier Gelabert , Andreas Hansson , Manuel Requena , Lorenza Giupponi