satellite-based mobile communications
Overview of the Green Paper on Mobile and Personal Communications and Extract of the Positions Proposed
... This should concern , inter alia , mobile services based on satellite communications , as put forward in the proposal for a Council Directive on a policy for the mutual recognition of li[r] ...
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A DUAL LAUNCH FOR MOBILE COMMUNICATIONS AND METEOROLOGY SATELLITES
... Alphasat satellite is the result of a public-private partnership agreement between Inmarsat, the world’s leading provider of mobile satellite services, and the European Space Agency (ESA), with ...
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Design of Compact Multiband Antenna with Band-Rejection Features for Mobile Broadband Satellite Communications
... Nowadays, the need to incorporate broadband services in moving vehicles has drastically increased. Constrained by aesthetic requirements of the vehicles industry, the printed antennas are considered as the most adequate ...
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Hybrid propagation channel modelling for city area land mobile satellite communications
... in satellite communications, the maximum number of interactions to be considered is two for reflection and one for ...Agency) based on measured data and used in existent works like ...
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Advanced Mobile Communications for Emergency Management and Crisis Response
... the Mobile Telecommunications Equipment Laboratory, or ...with satellite based voice and data communications, a wireless local area network (LAN), portable phones for local or long distance ...
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Study of the effect of air gap on array microstrip antenna performances for mobile satellite communications
... This paper presents the design and performance analysis of stack-patch and pentagonal microstrip array antenna models based on simulation and measurement results. Both antennas use air-gap for enhancing bandwidth, ...
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A Neural Network MLSE Receiver Based on Natural Gradient Descent: Application to Satellite Communications
... The satellite communications field is getting an enormous attention in the wake of third generation (3-G) and fu- ture fourth generation (4-G) mobile communication sys- tems challenges [1, ...
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Inmarsat plc Reports Preliminary Full Year Results 2011
... global mobile satellite communications services (“MSS”), providing data and voice connectivity to end-users worldwide, with over 30 years of experience in designing, launching and operating an L-band ...
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Emergency Preparedness Guide
... on mobile phone and data services, so too does the need for reliable, space-based technology to support ...wireless communications interoperability when facing a disaster or terrorist ...Globalstar ...
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A novel spread slotted ALOHA based on cognitive radio for satellite communications system
... to satellite communications has been studied by ...in satellite commu- nications were studied in [14], and the key challenges and enabling technologies for each scenario are also ...A ...
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United Nations Education Program in Space Science and Technology 1988 2018
... terrain. Satellite communications sys- tems consist of several different segments, including a space segment, a ground control segment and ground infrastructure ...each satellite as well as for ...
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Spectrum Monitoring Algorithms for Wireless and Satellite Communications
... completely based on the ability to isolate the antennas of the transmit and sensing unit and cancel the ...proposed based on the idea of spatial filtering for achieving a tolerable level of ...
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FIRST RESPONDER S GUIDE TO SATELLITE COMMUNICATIONS
... Public-Safety Communications Officials (APCO) International is pleased to work with the Satellite Industry Association in order to provide a better understanding of the unique resource satellite ...
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Mobile Communications in Japan
... The first commercial service for mobile telephone (1G) was provided by NTT Public Corporation in 1979 when they introduced the “automobile telephone”. Soon the equipment became detached from automobiles and was ...
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ETSI TS V3.1.1 ( ) Technical Specification
... • Release 1 specifications have a GMR 1 prefix in the title and a version number starting with "1" (V1.x.x). • Release 2 specifications have a GMPRS 1 prefix in the title and a version number starting with ...
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Mobile to mobile channel modelling for wireless communications
... aeronaut ical radio navigation ARN AvVGN addit ive white Gaussian noise CDF cumulative distribution function DB double bounced DSRC dedicated short range communication EAoA main elevatio[r] ...
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MASTER ADVANCED SCIENCES OF MODERN TELECOMMUNICATIONS
... – Advanced Wireless Communications and Mobility (5 ECTS) Analysis and construction of transmitters and receivers for mobile communications – Advanced Signal processing for Communications[r] ...
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MOBILE SATELLITE SYSTEM COMMUNICATION
... a satellite phone (say Globalstar phone) from a cellular phone or landline ...relay satellite then back down to the Globalstar satellite phone ...
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Importance of Microwave Antenna in Communication System
... Backbone or back haul systems have been built for mobile operators who want to be independent from Telcos and fixed wire operators. It saves cost for leasing a fixed line and allows a simple upgrade of the network ...
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The Business of Mobile VoIP: IP Voice Communications in the Enterprise
... business communications systems. The benefits that IP-based communications delivers is being extended to mobile devices through mobile VoIP, a solution which enables VoIP calls to be ...
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