Integrated Digital Enhanced Network, commonly referred to as iDEN, is a mobile communications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. Sprint Nextel is the largest US retailer of iDEN services. iDEN places more users in a given spectral space, compared to analog cellular systems, by using time division multiple access (TDMA). Up to six communication channels share a 25 kHz space; some competing technologies place only one channel in 12.5 kHz.
iDEN is available in othe ....etc

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ABSTRACT
Free Space Optics (FSO) or Optical Wireless, refers to the transmission of modulated visible or infrared (IR) beams through the air to obtain optical communications. Like fiber, Free Space Optics (FSO) uses lasers to transmit data, but instead of enclosing the data stream in a glass fiber, it is transmitted through the air. It is a secure, cost-effective alternative to other wireless connectivity options. This form of delivering communication has a lot of compelling advantages.
Data rates comparab ....etc

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Science and technology with all its miraculous advancements has fascinated human life to a great extent that imagining a world without these innovations is hardly possible. While technology is on the raising slope, we should also note the increasing immoral activities. With a technical view, Power Theft is a non-ignorable crime that is highly prevalent, and at the same time it directly affects the economy of a nation. Data collected over Tirunelveli District, Bhel Trichy proves the ....etc

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The objective of this seminar is to give an outline for a Push-to-Talk (PTT) system that utilizes a Bluetooth scatternet and the Personal Area Networking (PAN) profile for data communications . The system is thus fully independent of cellular networks. A reasonable range of several hundred meters can be obtained with multihop communications between Bluetooth class 1 devices, whose range is up to 100 m. The outline of Push-to-Talk over Bluetooth (PoB) comprises methods for group formation, network formation, communication, and floor control. The ....etc

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Wireless Technology
Wireless Technology


Wireless technology utilizes radio waves and/or microwaves to maintain communication channels between computers. Wireless technology is a more modern alternative to wired that relies on copper and/or fiber optic cabling between network devices.


Presented By:

Vikrant Ganpat Deshmukh
Kiran Sunildatt Trimbake
Vamanrao Ithape Polytechnic,
sangamner


Need of wireless technology:-
We are know that wire technology is good
for high data transfer in networkin ....etc

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Presented by :
Eng/Ayman Wael Elashmawy


Maritime Mobile Service Identities (MMSI)
DSC radios MUST receive an MMSI to function properly
Uniquely encoded nine digit number with vessel/owner’s information (like a phone number)
Stores vessel information, owner, etc…
Identifies and helps find boater in a distress situation
Coast Guard maintains database for distress information retrieval
Store other vessels MMSI’s into your radio (like a ‘contact list’)
You have to know a boater’s MMSI to call ....etc

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It is shown that several (single-mode) models (PTT, XPP) are basically special cases of the General Network model. The XPP model of Verbeeten et al (2001) is shown to give an identical response to a PTT model at high elongational rates, but the models differ in shear flow at high shear rates. The Giesekus term in the XPP model has actually no effect at any deformation rate except the generation of a second normal stress difference at small shear rates. The possibility of tailoring the shear flow response at high shear rates is explored. The res ....etc

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presented by
Muhammad Shoaib Ahmed


History
 PTT available since World War II with limited coverage but minimum charges
 In 1996 Nextel begins to rollout iDEN
 Push-to-Talk (PTT or P2T), originally introduced in the US by Nextel through its partnership with Motorola
 Tata Indicom is the first mobile service provider to nationally launch Push-To-Talk in India
Introduction
 PTT in cellular networks is called Push-To-Talk over Cellular ....etc

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Introduction
iDEN is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. iDEN places more users in a given spectral space, compared to analog cellular and two-way radio systems, by using speech compression and time division multiple access TDMA. Notably, iDEN is designed, and licensed, to operate on individual frequencies that may not be contiguous. iDEN operates on 25kHz channels, but only occupies 20 kHz in order to provide ....etc

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i-DEN Integrated Digital Enhanced Network

Integrated Digital Enhanced Network, commonly referred to as iDEN, is a mobile communications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone.

Sprint Nextel is the largest US retailer of iDEN services. iDEN places more users in a given spectral space, compared to analog cellular systems, by using time division multiple access (TDMA). Up to six communication channels share a 25 kHz space ....etc

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