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Spectrum sensing in a large-scale heterogeneous network is very challenging as it usually requires a large number of static secondary users (SUs) to obtain the global spectrum states. To tackle this problem, in this paper, we propose a new…

信息论 · 计算机科学 2018-11-26 Yizhen Xu , Peng Cheng , Zhuo Chen , Yonghui Li , Branka Vucetic

In cellular heterogeneous networks (HetNets), a number of distributed base stations cooperatively provide services to multiple mobile users. This paper addresses joint base-station activation and coordinated beamforming design for downlink…

信号处理 · 电气工程与系统科学 2019-02-11 Siguo Bi , Zhaoxi Fang , Xiaojun Yuan , Xin Wang

Owing to the ever-increasing demand in wireless spectrum, Cognitive Radio (CR) was introduced as a technique to attain high spectral efficiency. As the number of secondary users (SUs) connecting to the cognitive radio network is on the…

信息论 · 计算机科学 2020-04-10 Thulasi Tholeti , Vishnu Raj , Sheetal Kalyani

Sensing will be an important service of future wireless networks to assist innovative applications such as autonomous driving and environment monitoring. Perceptive mobile networks (PMNs) were proposed to add sensing capability to current…

信息论 · 计算机科学 2023-04-20 Lei Xie , Shenghui Song , Khaled B. Letaief

The rate distribution in heterogeneous networks (HetNets) greatly benefits from load balancing, by which mobile users are pushed onto lightly-loaded small cells despite the resulting loss in SINR. This offloading can be made more aggressive…

信息论 · 计算机科学 2013-05-27 Qiaoyang Ye , Mazin Al-Shalash , Constantine Caramanis , Jeffrey G. Andrews

Coordinated multi-point (CoMP) communication is attractive for heterogeneous cellular networks (HCNs) for interference reduction. However, previous approaches to CoMP face two major hurdles in HCNs. First, they usually ignore the inter-cell…

信息论 · 计算机科学 2012-10-22 Ping Xia , Chun-Hung Liu , Jeffrey G. Andrews

In a densely deployed heterogeneous network (HetNet), the number of pico/micro base stations (BS) can be comparable with the number of the users. To reduce the operational overhead of the HetNet, proper identification of the set of serving…

信息论 · 计算机科学 2015-06-17 Wei-Cheng Liao , Mingyi Hong , Ya-Feng Liu , Zhi-Quan Luo

Semi-supervised learning (SSL) has shown notable potential in relieving the heavy demand of dense prediction tasks on large-scale well-annotated datasets, especially for the challenging multi-organ segmentation (MoS). However, the…

计算机视觉与模式识别 · 计算机科学 2025-01-08 Zhenghao Feng , Lu Wen , Yuanyuan Xu , Binyu Yan , Xi Wu , Jiliu Zhou , Yan Wang

Poisson Point Process (PPP) has been widely adopted as an efficient model for the spatial distribution of base stations (BSs) in cellular networks. However, real BSs deployment are rarely completely random, due to environmental impact on…

网络与互联网体系结构 · 计算机科学 2014-08-04 Yifan Zhou , Zhifeng Zhao , Qianlan Ying , Rongpeng Li , Xuan Zhou , Honggang Zhang

The last mile connection is dominated by wireless links where heterogeneous nodes share the limited and already crowded electromagnetic spectrum. Current contention based decentralized wireless access system is reactive in nature to…

网络与互联网体系结构 · 计算机科学 2020-02-03 Shuvam Chakraborty , Hesham Mohammed , Dola Saha

Employing multi-tier networks is among the most promising approaches to address the rapid growth of the data demand in cellular networks. In this paper, we study a two-tier uplink cellular network consisting of femtocells and a macrocell.…

信息论 · 计算机科学 2014-08-06 Zolfa Zeinalpour-Yazdi , Shirin Jalali

This letter investigates the problem of distributed spectrum access for cognitive small cell networks. Compared with existing work, two inherent features are considered: i) the transmission of a cognitive small cell base station only…

信息论 · 计算机科学 2015-02-25 Yuhua Xu , Yuli Zhang , Qihui Wu , Liang Shen , Jinlong Wang

Cell-free wireless networks deploy distributed access points (APs) to simultaneously serve user equipments (UEs) across the service region and are regarded as one of the most promising network architectural paradigms. Despite recent…

信号处理 · 电气工程与系统科学 2025-07-29 Zhuoyin Dai , Jingran Xu , Xiaoli Xu , Ruoguang Li , Yong Zeng , Jiangbin Lyu

As highlighted in the National Spectrum Strategy, Dynamic Spectrum Access (DSA) is key for enabling 6G networks to meet the increasing demand for spectrum from various, heterogeneous emerging applications. In this paper, we consider…

网络与互联网体系结构 · 计算机科学 2025-01-31 Ankit Walishetti , Igor Kadota , Aidan Kim , Colin Ward , Eduardo Gutierrez , Randall Berry

This paper studies a two-hop decode-and-forward underlay cognitive radio system with interference alignment technique. An energy-constrained relay node harvests the energy from the interference signals through a power-splitting (PS)…

Heterogeneous Networks (HetNets) are introduced by the 3GPP as an emerging technology to provide high network coverage and capacity. The HetNets are the combination of multilayer networks such as macrocell, small cell (picocell and…

网络与互联网体系结构 · 计算机科学 2016-04-29 Trung Kien Vu

A recent approach in modeling and analysis of the supply and demand in heterogeneous wireless cellular networks has been the use of two independent Poisson point processes (PPPs) for the locations of base stations (BSs) and user equipments…

网络与互联网体系结构 · 计算机科学 2015-05-04 Meisam Mirahsan , Rainer Schoenen , Halim Yanikomeroglu

This study investigates a downlink rate-splitting multiple access (RSMA) scenario in which multiple base stations (BSs), employing a coordinated multi-point (CoMP) transmission scheme, serve users equipped with movable antenna (MA)…

信号处理 · 电气工程与系统科学 2025-02-25 Ali Amhaz , Shreya Khisa , Mohamed Elhattab , Chadi Assi , Sanaa Sharafeddine

Recent development in brain-machine interface technology has made seizure prediction possible. However, the communication of large volume of electrophysiological signals between sensors and processing apparatus and related computation…

机器学习 · 计算机科学 2022-05-30 Di Wu , Yi Shi , Ziyu Wang , Jie Yang , Mohamad Sawan

In this paper, we study the optimal secondary-link beamforming pattern that balances between the SU's throughput and the interference it causes to PUs in MIMO cognitive radio networks. In particular, we aim to maximize the throughput of the…

网络与互联网体系结构 · 计算机科学 2010-08-11 Ying Jun Zhang , Anthony Man-Cho So