نتایج جستجو برای: telecommunication channel

تعداد نتایج: 233027  

2003
Paul Mühlethaler Anis Laouiti

Information theory and analytical methods play a central role in the networking technology. It identifies the key parameter that must be quantified in order to characterize the performance of a network. The analytical information theory is part of the foundations of the Hipercom project. This is a tool box that has been collected and adapted from the areas of the analysis of algorithms and the ...

2013
Imran Khan M. Jakub Oleszko

Telecommunication traffic (voice, data etc.) is increasing day by day. So to meet the capacity demand, in this paper we have designed and verified a high capacity optical fiber communication system through simulation. We simulated a 40 Gbps single optical fiber link for telecommunication traffic transmission which could be possible to implement in developing countries with few modifications in ...

2014
Dingna Tang Yimin Yang Ying Yan Ming Zhou

With the improvement of telecommunication and wireless Internet-access technologies, smart mobile terminals have been extensively applied for mobile shopping. In this paper, PPM Model is taken as a theoretical framework and an empirical research method is employed to determine the antecedents influencing consumers’ decisions on migrating from PC-based shopping to mobile shopping. We found that ...

1997
Thomas Schaub

Traditionally telemetering systems are based on telephone and similar voice-grade channels. Today new channels such as radio or distribution line carrier (DLC) open new possibilities. The most discussed telecommunication channel is the data highway. It is formed by the combination of cable and of optical fibre networks. In many countries the utilities themselves are involved in the development ...

2013
Florian Feldmann Jörg Schwenk

With the advent of the iPhone AppStore and Google Play, the ’walled garden’ approach of telecommunication companies to supply content to their customers using standard GSM/UMTS/LTE authentication has failed: Neither Google nor Apple, nor any other content provider on the mobile internet, uses the SIM card for authentication. This is mainly due to the fact that mobile telecommunication and inter...

2013
Mladen Veletić

This paper presents a novel Time Difference of Arrival (TDoA) estimation algorithm for mobile station positioning in Universal Mobile Telecommunication System (UMTS) based on cell search procedure defined by 3GPP. Standardized method for Time Difference of Arrival (TDoA) measurement and cell search procedure are stated. Furthermore, proposed solution for TDoA parameter estimation via multichann...

Journal: :Int. J. Communication Systems 2011
Panagiotis Varzakas

The optimization between the processing gain and the theoretically achievable average channel capacity per user (in the Shannon sense) of a constant total system's allocated bandwidth hybrid direct sequence/fast frequency hopping codedivision multiple-access (DS/FFH-CDMA) cellular system, when operating in a Rayleigh fading environment, is presented. ... Pagination p 902-910 Subject Engineering...

2003
José Luis Cuevas-Ruíz José A. Delgado-Penín

Increase on the demand of telecommunication services is related with systems based on different technological alternatives. One of them, that is being developed in the last years is the use of aircrafts or airships technologies. The High Altitude Platforms Stations (HAPS) represent one attractive option today. In this paper, a switched channel model in L band based on HAPS is proposed and analy...

2008
Takashi Otake Marii Higuchi

This paper investigates the role of pitch accent information in spoken-word recognition in listeners in Fukushima, Japan, whose dialect is accentless. Previous research revealed that accentless listeners were less sensitive to pitch accent than Tokyo Japanese listeners. The present study asked whether middle-aged listeners’ use of accent information would differ from that of young listeners. 40...

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