نتایج جستجو برای: base station

تعداد نتایج: 295282  

2002
Anders G Derneryd

The deployment of cellular systems is a success and as the number of subscribers grows, service providers may experience capacity problems due to limited frequency spectrum. Consequently, service providers need to find methods to enhance the coverage and capacity of their networks. Today’s systems are optimally designed for supporting speech traffic in circuit-switched services. The introductio...

Journal: :journal of ai and data mining 2014
seyed mojtaba hosseinirad s.k. basu

in this paper, we study wsn design, as a multi-objective optimization problem using ga technique. we study the effects of ga parameters including population size, selection and crossover method and mutation probability on the design. choosing suitable parameters is a trade-off between different network criteria and characteristics. type of deployment, effect of network size, radio communication...

2010
Thabet Mismar Khaled Elleithy Saikat Ray

This research deals with an energy efficient network for military mobile base station placement. The proposed method is based on minimizing the energy loss of military communication networks where the base station is moving along a preset path and the users are constantly moving in an independent speed and direction. It takes into account the free space loss and the knife edge effect for the en...

2011
François Mériaux Samson Lasaulce Michel Kieffer

This paper addresses the problem of locating base stations in a certain area which is highly populated by mobile stations; each mobile station is assumed to select the closest base station. Base stations are modeled by players who choose their best location for maximizing their uplink throughput. The approach of this paper is to make some simplifying assumptions in order to get interpretable an...

2008
Ramya Bhagavatula Robert W. Heath Kevin Linehan

Cellular standards like the third generation partnership program (3GPP) long term evolution (LTE), ultra-mobile broadband (UMB), high speed downlink packet access (HSDPA) and IEEE 802.16e (WiMAX) support multiple-input multiple-output (MIMO) wireless communication technology. MIMO uses multiple antennas at the transmitter and receiver along with advanced digital signal processing to improve lin...

2007
Jaein Jeong

• Great Duck Island [SMP04]. Szewczyk et al. have used two sensor patches, gateways, base station and satellite WAN link for their experiments. A gateway node interfaces a sensor patch to the base station and consists of a mote with 14dBi high gain yagi antenna (point-to-point, directional). The base station collects the data from the sensor patches in the database and makes the data available ...

2004
F.

Absb.ack A multiple access and collision resolution scheme that accounts for the spatial aspects of cochannel interference is introduced and analyzed for roadside base station to vehicle packet communications in Intelligent Vehicle Highway Systems (IVHS). In a wireless network with base stations having full knowledge of neighboring station activity, co-channel interference and destructive colli...

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