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advantages and disadvantages of 1g 2g 3g 4g 5g technology


Posted by:
Created at: Sunday 17th of March 2013 12:31:23 AM
Last Edited Or Replied at :Tuesday 03rd of September 2013 10:03:52 PM
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please give me current information about 5g mobile technology advantages and disadvantages, features and history?
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papers on 3g and 4g technology in ieee format


Posted by:
Created at: Sunday 07th of October 2012 10:53:03 AM
Last Edited Or Replied at :Monday 08th of October 2012 06:20:18 AM
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i want paper on 3g&4g technology in ieee forma..................[:=> Show Contents <=:]



1g 2g 3g 4g technology ppt and document free download


Posted by: rakheeb
Created at: Thursday 16th of February 2012 11:48:45 AM
Last Edited Or Replied at :Monday 29th of April 2013 02:00:35 AM
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I need rthe subje..................[:=> Show Contents <=:]



3G AND 4G TECHNOLOGY


Posted by: seminar class
Created at: Tuesday 12th of April 2011 12:28:43 AM
Last Edited Or Replied at :Tuesday 12th of April 2011 12:28:43 AM
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could often be listened to by third parties.
4. Drawbacks of 1G
1G compares unfavorably to its successors. It has low capacity, unreliable handoff, poor voice links, and no security at all since voice calls were played back in radio towers, making these calls susceptible to unwanted eavesdropping by third parties.
1G standards.
Advanced Mobile Phone System
(AMPS) was a 1G standard used in the United States.
Nordic Mobile Telephone (NMT) was a 1G standard used in Nordic countries (Denmark, Finland, Iceland, Norway and Sweden), as well as in its neighboring countries Switzerland ..................[:=> Show Contents <=:]



3G 4G Technologies


Posted by: seminar class
Created at: Tuesday 22nd of March 2011 02:07:43 AM
Last Edited Or Replied at :Tuesday 22nd of March 2011 02:07:43 AM
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the first move from 1981 analog(1G) to digital(2G) transmission in 1992. Followed, by 3G multi-media support, spread spectrum transmission and at least 200 kbit/s, in 2011 expected to be followed by 4G, which refers to all-IP packed-switched networks, mobile ultra-broadband (gigabit speed) access and multi-carrier transmission.
3G or 3rd Generation, is a generation of standards for mobile phones and mobile telecommunications services fulfilling specifications by the International Telecommunication Union. Application services include wide-area wireless voice telephone, mob..................[:=> Show Contents <=:]



visions of 4g full report


Posted by: computer science technology
Created at: Friday 22nd of January 2010 04:34:50 AM
Last Edited Or Replied at :Friday 22nd of January 2010 04:34:50 AM
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ate requirements. There is a requirement for a mixture of unicast, multicast and broadcast service delivery with dynamic variation between application services both spatially and temporally. Above all, there is a demand for ease of user access and manipulation, with minimal user involvement”complexity hidden from the user”and intelligence to learn and adapt with use.
From the above it will be seen that 4G will need to be highly dynamic in terms of support for:
¢ the users™ traffic
¢ air interfaces and terminal types
¢ radio environments
¢ quality-of-service ..................[:=> Show Contents <=:]



MegaSquirt


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:00:34 PM
Last Edited Or Replied at :Saturday 20th of September 2008 12:00:34 PM
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of 2005, although this can vary widely depending on application.

MegaSquirt is a successor of sorts to Bowling and Grippo's earlier EFI332 design, which was more complex yet more powerful system (at least initially). The EFI332 project started around 1995, and culminated in the release of about 200 kits in 2000. The system used a 32-bit MC68332 microcontroller from Motorola, hence the name. A steep learning curve is believed to have prevented the system from gaining wider acceptance.

The two engineers decided to simplify the design and focus on managing the fuel injectors (the EFI332 cou..................[:=> Show Contents <=:]



catalytic converter


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:00:03 PM
Last Edited Or Replied at :Thursday 08th of November 2012 11:57:16 PM
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(Connecticut)...................[:=> Show Contents <=:]



Globe valves


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:58:47 AM
Last Edited Or Replied at :Saturday 20th of September 2008 11:58:47 AM
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added strength. Bolted bonnet is used for larger or higher pressure applications.

Many globe valves have a class rating that corresponds to the pressure specifications of ANSI 16.34. Other different types..................[:=> Show Contents <=:]



gate valve


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:58:04 AM
Last Edited Or Replied at :Saturday 20th of September 2008 11:58:04 AM
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ited or underground.

Bonnets provide leakproof closure for the valve body. Gate valves may have a screw-in, union, or bolted bonnet. Screw-in bonnet is the simplest, offering a durable, pressure-tight seal. Union bonnet is suitable for applications requiring frequent inspection and cleaning. It also gives the body added strength. Bolted bonnet is used for larger valves and higher pressure applications.

Another type of bonnet construction in a gate valve is pressure seal bonnet. This construction is adopted for valves for high pressure service, typically in excess of 2250 psi. The unique ..................[:=> Show Contents <=:]



Gasoline direct injection or GDI


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:55:43 AM
Last Edited Or Replied at :Saturday 26th of June 2010 08:03:19 AM
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like a conventional gas internal combustion engine...................[:=> Show Contents <=:]



Valvetronic


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:55:16 AM
Last Edited Or Replied at :Saturday 20th of September 2008 11:55:16 AM
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e first variable valve timing system to offer continuously variable timing (on both intake and exhaust camshafts) along with continuously variable intake valve lift, from ~0 to 10 mm, on the intake camshaft only. Valvetronic-equipped engines are unique in that they rely on the amount of valve lift to throttle the engine rather than a butterfly valve in the intake tract. In other words, in normal driving, the 'gas pedal' controls the Valvetronic hardware rather than the throttle plate

First introduced by BMW on the 316ti compact in 2001, Valvetronic has since been added to many of BMW's engi..................[:=> Show Contents <=:]



BlueTec


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:52:33 AM
Last Edited Or Replied at :Friday 24th of May 2013 08:39:36 AM
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egulations through 2009. It also makes DaimlerChrysler the only car manufacturer in the the US committed to selling diesel models in the 2007 model year...................[:=> Show Contents <=:]



How to face a seminar


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:15:31 AM
Last Edited Or Replied at :Monday 01st of September 2014 09:25:55 AM
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hat's okay; the audience will never know unless you tell them.
Practice creating just a few meaningful headings to use and practice using only these headings as your cues. This will take practice, but practicing using only these few words will force you to better internalize your speech...................[:=> Show Contents <=:]



4g wireless technology Download Full Report


Posted by: computer science crazy
Created at: Saturday 21st of February 2009 12:44:31 PM
Last Edited Or Replied at :Friday 15th of March 2013 05:40:07 AM
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features of the system.

GSM was designed for digital speech services or for low bit rate data that could fit into a speech channel (e.g. 9.6kbit/s). It is a circuit rather than a packet oriented network and hence is inefficient for data communications. To address the rapid popularity increase of Internet services, GPRS is being added to GSM to allow packet (Internet Protocol ) communications at up to about 100kbit/s.

Third generation (3G) systems were standardised in 1999. These include IMT-2000 (International Mobile Telecommunications 2000), which was standardised within ITU-R an..................[:=> Show Contents <=:]



3G vs WiFi


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:57:58 PM
Last Edited Or Replied at :Thursday 02nd of February 2012 02:43:15 AM
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) and Wireless Local Area Networks (WLAN) . The former represents a natural evolution and extension of the business models of existing mobile providers. In contrast, the WiFi approach would leverage the large installed base of WLAN infrastructure already in place. We use 3G and WiFi as shorthand for the broad classes of related technologies that have two quiet distinct industry origins and histories.

Speaking broadly, 3G offers a vertically -integrated , top -down , service - provider approach to delivering wireless internet access , while WiFi offers an end -user -centric , decentralized..................[:=> Show Contents <=:]



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