نتایج جستجو برای: mobile phone base stations

تعداد نتایج: 507958  

1998
A. L. Garrett T. G. Macdonald D. L. Noneaker M. B. Pursley J. M. Shea

Mobile cellular CDMA networks for tactical applications require mobile base stations in order to provide communications on the moue. Because of the mobility of the base stations, power balancing among the transmitters at different base stations is more dificult than in commercial cellular CDMA systems. Handoff of mobiles among base stations is also more difficult, primarily due to the mobility ...

2012
Svilen Ivanov Edgar Nett

Wireless Mesh Network (WMN) is an ad-hoc network with a fixed network infrastructure (see an example in figure 1). The physical structure of a WMN includes base stations, a backbone and mobile stations. The base stations (also known as mesh routers or mesh points) are static wireless nodes, forming the network infrastructure and providing wireless network access to the mobile stations. The back...

2010
Paul Elliott Mireille B Toledano J Bennett L Beale K de Hoogh N Best D J Briggs

OBJECTIVE To investigate the risk of early childhood cancers associated with the mother's exposure to radiofrequency from and proximity to macrocell mobile phone base stations (masts) during pregnancy. DESIGN Case-control study. SETTING Cancer registry and national birth register data in Great Britain. PARTICIPANTS 1397 cases of cancer in children aged 0-4 from national cancer registry 19...

2006
Pekka Ala-Siuru Tapani Rantakokko

In this paper we introduce a hybrid method for personalizing different interface features in a mobile phone. We give a description how to use combined data from GSM base stations and Bluetooth sources to determine user location and change the user profile automatically according to the location context. We give detailed information about our data logging experiments and the learning algorithms ...

2016
Saad Abdalratha Makki Hasan Kadhim

Value Added Services VAS in Mobile-Phone-Networks, found its way to TV & Radio stations through the benefits from the huge audience or followers they got. Also the traditional media decides to get advantages of VAS services and consider it as a new revenue source. The traditional TV & Radio stations and the mobile phone network based on 3G technologies and beyond, both get dramatic changes by t...

2011
Yury Grigoriev

Today world population lives in a new electromagnetic environment, characterized with (i) around the clock enforcement of chronic exposure of all age and gender groups to a wide range of modulated electromagnetic fields (EMF) from base stations; (ii) daily, repeated from early childhood throughout entire life exposure to EMF RF mobile phone the brain and vestibular receptor apparatus and audito...

Journal: :Toxicology letters 2001
M H Repacholi

Widespread concerns have been raised about the possibility that exposure to the radiofrequency (RF) fields from mobile telephones or their base stations could affect people's health. Such has been the rapid growth of mobile telecommunications that there will be about one billion mobile phone users before 2005. Already there are more mobile than fixed-line users. Developing countries are establi...

Journal: :Wireless Communications and Mobile Computing 2008
Sanem Kabadayi Ibrahim Tekin

A hybrid location finding technique based on time difference of arrival (TDOA) with round-trip time (RTT) measurements is proposed for a wideband code division multiple access (WCDMA) network. In this technique, a mobile station measures timing from at least three base stations using user equipment receive–transmit (UE Rx– Tx) time difference and at least three base stations measure timing from...

1998
Charles Shields Vikas Jain Simeon C. Ntafos Ravi Prakash S. Venkatesan

Rapidly deployable wireless networks consist of mobile base stations and less powerful mobile hosts. The mobile base stations have to maintain wireless connectivity while on the move along pre-de ned paths. Physical obstructions and wireless range limitations may prevent a pair of mobile base stations from establishing a wireless link. We study situations of distance-constrained mobility, and f...

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