TelecomStudy18

The fundamentals of the LTE Radio interface and get an overview of the evolution of 4G telecommunication. This 19 minutes video is presented by Ericsson expert Sven-Anders Sturesson. The tutorial gives an overview of the fundamental technology of Long Term Evolution (LTE). You will learn the basics of the LTE radio interface, including multiple input, multiple outputs (MIMO), OFDM, uplink and downlink, SIMO, TDD, FDD, channel coding and GSA.   http://www.ericsson.com/ourportfolio/ericsson-academy/online-tutorials/lte_fundamentals_module/player.html Source: Ericsson

Citrix facilitates real-time access to shared applications over networks and the Internet. Remote access to Citrix-enabled applications can be over DSL, T1, ISDN, or dial-up. Citrix MetaFrame enables multiple users to run shared applications simultaneously. Communication between Citrix clients and servers consists of exchange of user inputs (keyboard/mouse) and screen shots. Citrix MetaFrame runs on Windows NT 4.0 (Terminal Server Edition) and Windows 2000, with Terminal Services installed. Citrix products include: Citrix Access Essentials Citrix Access Gateway Citrix Access Suite Citrix Application Gateway Citrix GoToAssist Citrix GoToMeeting Citrix GoToMyPC Citrix NetScaler Citrix Password Manager Citrix Presentation Server For technical support and questions regarding Citrix MetaFrame, go to http://support.citrix.com

Multimedia Broadcast Multicast Service, MBMS A new service introduced in 3GPP Release 6 specifications is Multimedia Broadcast Multicast Service (MBMS). There are two high level modes of operation in MBMS, as given   1.        Broadcast mode, which allows sending audio and video. The already existing Cell Broadcast Service (CBS) is intended for messaging only. The broadcast mode is expected to be a service without charging and there are no specific activation requirements for this mode. 2.          Multicast mode allows sending multimedia data for the end users that are part of a multicast subscription group. End users need to monitor service announcements regarding service availability, and then they can join the currently active service. From the network point of view, the same content can be provided in a point-to-point fashion if there are not enough users to justify the high power transmission. A ...

Push-to-talk over cellular (PoC) service is instant in the sense that the voice connection is established by simply pushing a single button and the receiving user hears the speech without even having to answer the call. While ordinary voice is bi-directional, the PoC service is a one directional service. The basic PoC application may hence be described as a walkie-talkie application over the packet switched domain of the cellular network. In addition to the basic voice communication functionality, the PoC application provides the end user with complementary features like, for example:       ·          Ad hoc and predefined communication groups; ·          Access control so that a user may define who is allowed to make calls to him/her; ·          ‘Do-not-disturb’ in case immediate reception of audio is not desirable. With ordina...

Main differences between the third and second generation air interfaces are described. GSM and IS-95 (the standard for cdmaOne systems) are the second generation air interfaces considered here. Other second generation air interfaces are PDC in Japan and US-TDMA mainly in the Americas; these are based on TDMA (time division multiple access) and have more similarities with GSM than with IS-95. The second generation systems were built mainly to provide speech services in macro cells. To understand the background to the differences between second and third generation systems, we need to look at the new requirements of the third generation systems which are listed below:        ·          Bit rates up to 2 Mbps; ·          Variable bit rate to offer bandwidth on demand; ·          Multiplexing of services with different quality requir...

Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Created by telecoms vendor Ericsson in 1994,[1] it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization. To understand any kind of communication technology, you should be able to answer to several basic questions about it. In other words, if you can answer the following questions, I would say you already have some general understanding on it. Is it wired communication? or Wireless communication ? If it is wireless communication, what kind of wave length (frequency) range it uses ? What is the typical range of communication? (How far it can go) ? What is the typical data rate you ...

Degrees, Minutes, Seconds to/from Decimal Degrees The form below allows you to convert Latitude and Longitude information between decimal format and degree/minute/second (DMS) format. This is useful when finding distances. Here's the basic equation: Decimal Degrees = Degrees + minutes/60 + seconds/3600 Decimal Lat Long Deg Min Sec Lat N S Long E W