نتایج جستجو برای: base stations

تعداد نتایج: 286246  

Journal: :IEEE Transactions on Communications 2021

By fully exploiting the mobility of unmanned aerial vehicles (UAVs), UAV-based base stations (BSs) can move closer to ground users achieve better communication conditions. In this paper, we consider a scenario where an BS is dispatched for satisfying data request maximum number users, weighted according their demand, before exhausting its on-board energy resources. The resulting trajectory opti...

Journal: :IEEE Vehicular Technology Magazine 2022

Mobile communication via high-altitude platforms operating in the stratosphere is an idea that has been on table for decades. In past few years, however, with recent advances technology and parallel progress standardization regulatory bodies like 3rd Generation Partnership Project (3GPP) International Telecommunications Union (ITU), these ideas have gained considerable momentum. this article, w...

Journal: :CoRR 2017
Siddhartan Govindasamy Itsik Bergel

We consider a user-centric co-operative cellular network, where base stations close to a mobile co-operate to detect its signal using a (joint) linear minimum-mean-square-error receiver. The base stations, which have multiple antennas, and mobiles are modeled as independent Poisson Point Processes to avoid dependence on specific node locations. Combining stochastic geometry and infinite random ...

Journal: :International journal of occupational and environmental health 2010
Vini G Khurana Lennart Hardell Joris Everaert Alicja Bortkiewicz Michael Carlberg Mikko Ahonen

Human populations are increasingly exposed to microwave/radiofrequency (RF) emissions from wireless communication technology, including mobile phones and their base stations. By searching PubMed, we identified a total of 10 epidemiological studies that assessed for putative health effects of mobile phone base stations. Seven of these studies explored the association between base station proximi...

Journal: :CoRR 2015
Martin Dräxler Holger Karl

The coordination of base stations in mobile access networks is an important approach to reduce harmful interference and to deliver high data rates to the users. Such coordination mechanisms, like Coordinated Multi-Point (CoMP) where multiple BSs transmit data to a user equipment, can be easily implemented when centralizing the data processing of the base stations, known as Cloud RAN. This centr...

Journal: :Revue scientifique et technique 2011
J Watson P Daniels P Kirkland A Carroll M Jeggo

In August 2007 Australia experienced its first outbreak of equine influenza. The disease occurred first in a quarantine station for imported horses near Sydney and subsequently escaped into the general horse population. After an extensive campaign the disease was eradicated and Australia is again recognised as free of this disease. Equine influenza was then, and is now, recognised to be the maj...

2003
Ravi Prakash André Schiper Mansoor Mohsin

This paper describes a distributed algorithm for reliable multicast in mobile cellular networks. In the proposed solution the multicast message is flooded to all the base stations over reliable channels. The base stations then collectively ensure that all mobile nodes belonging to the multicast group get the message: the channels between the base station and mobile nodes are unreliable. The ori...

2017
Min-Shu Hung Jen-Yi Pan Yu-Chen Hsieh

Femto base stations are usually installed in the region of macrocells in next-generation hybrid macro/femto-cell networks, and the transmit power of macro base stations is much larger than that of femto base stations. Because the conventional handover decision is only based on the received signal strength (RSS), user equipments near the center of macrocells hardly camp on femtocells, even if th...

2003
Benyuan Liu Zhen Liu Donald F. Towsley

We study the throughput capacity of hybrid wireless networks. A hybrid network is formed by placing a sparse network of base stations in an ad hoc network. These base stations are assumed to be connected by a high-bandwidth wired network and act as relays for wireless nodes. They are not data sources nor data receivers. Hybrid networks present a tradeoff between traditional cellular networks an...

2004
Alireza Tarighat Nima Khajehnouri Ali H. Sayed

Abstnrer-Location finding for CDMA subscribers using an antenna army at the base station and deploying multiple base stations is studied in this paper. ' b o metbods are considered for radio location: measured time-of-arrival (TOA) and angle-of-anival (AOA), and algorithms to estimate them are presented. The estimated TOA and AOA fmm different base stations are combined via data fusion to estim...

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