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Optical packet switch architectures full report


Posted by: computer science technology
Created at: Wednesday 20th of January 2010 01:07:27 AM
Last Edited Or Replied at :Wednesday 20th of January 2010 01:07:27 AM
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g.,622 Mb/s), and the payload rate may vary from a few hundred mega bits per second to 10 Gb/s. moreover, the packet length is fixed in time, not in the number of bits. That is the duration of the packet is fixed, but the size of the packet is variable. This packet format has two advantages. First, the processing speed of the logic in the WDM packet switches depends on the header rate, but not on the payload rate. Second, the buffering space in the WDM packet switches, realized by means of ODLs whose length is proportional to the time length of the packet to be stored, does not depend on the p..................[:=> Show Contents <=:]



RATE DELAY GUARANTEES PROVIDED BY CLOSE PACKET SWITCHES WITH LOAD BALANCING-NETWORK


Posted by: electronics seminars
Created at: Tuesday 12th of January 2010 07:46:40 PM
Last Edited Or Replied at :Thursday 05th of May 2011 04:48:59 AM
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required to live up to a certain lifetime criterion, Since the objective of maximizing the sum of rates of all the nodes in the network can lead to a severe bias in rate allocation among the nodes, we advocate the use of lexicographical max-min (LMM) rate allocation. To calculate the LMM rate allocation vector, we develop a polynomial-time algorithm by exploiting the parametric analysis (PA) technique from linear program (LP), which we call serial LP with Parametric Analysis (SLP-PA). We show that the SLP-PA can be also employed to address the LMM node lifetime problem much more efficiently t..................[:=> Show Contents <=:]



Optical packet switch architectures seminar report


Posted by: electronics seminars
Created at: Tuesday 05th of January 2010 03:47:54 AM
Last Edited Or Replied at :Tuesday 05th of January 2010 03:47:54 AM
seminar , Optical packet switch architectures, Optical packet switch architectures seminar report , optical packet switching network, optical packet switch using optsim , optical packet switch architecture, optical packet switch from endicott , optical packet switch network, optical packet switch , optical packet switching, optical packet buffering , optical packet networks, hybrid optical packet infrastructure , optical packet edge, Optical packet , switch, packet , Optical,
opportunity to multiply network capacity. Current photonic switching technologies allow us to rapidly deliver the enormous bandwidth of wavelength division multiplexing networks. Of all switching schemes, photonic packet switching appears to be a strong candidate because of high speed data rate/format transparency, and configurability it offers. The goal of this paper is to discuss some of the critical issues involved in designing and implementing photonic packet switched networks. Finally, we conclude by describing some of the emerging technologies with the potential to revolutionize optical ..................[:=> Show Contents <=:]



Optical packet switch architectures Download Full Report And Abstract


Posted by: computer science crazy
Created at: Saturday 21st of February 2009 02:00:19 PM
Last Edited Or Replied at :Thursday 05th of January 2012 05:12:59 AM
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nication network increase continuously .The world wide web alone Ëœfor example require a yearly 8 fold increase in bandwidth per user . All optical networks may be the only solution to cope with such increasing bandwidth .In these network transmitter signals remain in optical format on the way from source to destination

The wave length division multiplexing WDM technology offers a practical way to exploit the bandwidth of fiber optics by partitioning the optical bandwidth into separate channels .Photonic packet switching offers high speed ,data rate transparency ,and configurability whic..................[:=> Show Contents <=:]



Optical packet switch architectures


Posted by: computer science crazy
Created at: Monday 22nd of September 2008 02:21:15 PM
Last Edited Or Replied at :Monday 22nd of September 2008 02:21:15 PM
architectures , switch, packet , Optical,
o a splitter, which distributes the same signal to N different out put fibbers, one per out put fibber. The signal on each of these out put fibbers goes through another splitter, which distributes this in to d+1 different out put fibbers, and each out put is connected through an optical gate to one of the ODLs of the destination out put buffer. The optical packet is forwarded to an ODL by appropriately keeping one optical gate open and closing the rest. The information regarding to which wavelength of an incoming packet and the decision as to which ODL of the destination out put buffer the pac..................[:=> Show Contents <=:]



Optical packet switch architectures


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 01:16:13 AM
Last Edited Or Replied at :Sunday 21st of September 2008 01:16:13 AM
architectures , switch, packet , Optical,
d out of the out put port...................[:=> Show Contents <=:]



Wireless Application Protocol


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:37:02 AM
Last Edited Or Replied at :Thursday 29th of November 2012 02:58:17 AM
Protocol, Application , Wireless, www seminar projects com forum electrical seminar topics , wireless application protocol, wap layer architecture ppt , wap ppt, mobile middleware for application development , seminar on wireless application protocol, seminar topics on wireless protocols , seminar report on wireless application protocol2, wirless web application security protocal , wap difference between cnf ind primitive meaning,
work to the WAP gateway, which is the interface between the operator's network and the Internet...................[:=> Show Contents <=:]



LED wireless


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:34:43 AM
Last Edited Or Replied at :Wednesday 14th of March 2012 01:42:59 AM
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ncurrent use of visible LEDs for simultaneous signaling and communication, called iLight, leads to many new and interesting applications and is based on the idea of fast switching of LEDs and the modulation visible-light waves for free-space communications. The feasibility of such approach has been examined and hardware has been implemented with experimental results. The implementation of an optical link has been carried out using an LED traffic-signal head as a transmitter. The LED traffic light (fig 1 below) can be used for either audio or data transmission.
Audio messages can be sent using..................[:=> Show Contents <=:]



High Performance DSP Architectures


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:12:14 AM
Last Edited Or Replied at :Sunday 21st of September 2008 12:12:14 AM
Architectures, Performance , High,
in every cycle.
Since many DSP algorithms consume two data operands per instruction, a further optimization commonly used is to include a small bank of RAM near the processor core that is used as an instruction cache. When a small group of instructions is executed repeatedly, the cache is loaded with those instructions, freeing the instruction bus to be used for data fetches instead of instruction fetches thus enabling the processor to execute a MAC in a single cycle. High memory bandwidth requirements are often further supported via dedicated hardware for calculating memory addresses. These..................[:=> Show Contents <=:]



Optical Burst Switching


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:10:29 AM
Last Edited Or Replied at :Friday 02nd of March 2012 10:36:34 PM
Switching , Burst, Optical , powered by mybb obs, optical burst switching ,
e past few years because it achieves high traffic throughput and high resource utilization .

Introduction:

Optical communication has been used for a long time and it very much popular with the invention of wavelength-division multiplexing(WDM) Current WDM works over point-to-point links,where optical-to-electrical-to-optical(OEO) conversion is required over each step The elimination of OEO conversion in all optical networks(AON) allows for unprecedented transmission rates AON's can further be categorized as wavelength-routed networks(WRNs).,optical burst switched networks(OBSNs),or opt..................[:=> Show Contents <=:]



Optical Switching


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:58:28 PM
Last Edited Or Replied at :Friday 06th of August 2010 02:21:13 PM
Switching, Optical , seminar optical switching, optical switching , presentation on optical switching,
sists of a glass core and a surrounding layer called the cladding. The core and cladding have carefully chosen indices of refraction to ensure that the photos propagating in the core are always reflected at the interface of the cladding. The only way the light can enter and escape is through the ends of the fiber. A transmitter either alight emitting diode or a laser sends electronic data that have been converted to photons over the fiber at a wavelength of between 1,200 and 1,600 nanometers.

Today fibers are pure enough that a light signal can travel for about 80 kilometers without the nee..................[:=> Show Contents <=:]



Optical Packet Switching Network


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:55:58 PM
Last Edited Or Replied at :Saturday 20th of September 2008 11:55:58 PM
Network, Switching , Packet, Optical ,
and nonlinear fiber based...................[:=> Show Contents <=:]



Simputer


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:49:10 PM
Last Edited Or Replied at :Wednesday 19th of March 2014 03:44:32 PM
Simputer , architecture of simputers, simputer architecture , sweet simputer means, the simputer acess device for the masses , simputer pdf, schlumberger payflex reference manual , soft keyboard, phonetics to speech engine used in simputer , how a simputer is used as a smart caed reader, simputer ,
ing features:
- It is portable
- A (320 X 240) LCD Panel which is touch enabled
- A speaker, microphone and a few keys
- A soft keyboard
- A stylus is a pointing device
- Smart card reader in Simputer
- The use of extensive audio in the form of text to speech and audio snippets
The display resolution is much smaller than the usual desktop monitor but much higher than usual wireless devices (cell phones, pagers etc). The operating system for Simputer is Linux. It is designed so that Linux is to be started up in frequently, but the Simputer is in a low power mode during the times it is n..................[:=> Show Contents <=:]



Cellular Digital Packet Data


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:36:29 PM
Last Edited Or Replied at :Tuesday 27th of November 2012 11:54:02 PM
Data, Packet , Digital, Cellular , cellular digital, in ppt future enhancement of cdpd , cellular digital packet, what is cellular digital packet data and its working , cellular digital packet data,
mit data with a higher degree of accuracy, few service interruptions, and strong security. In addition CDPD technology represent a way for law enforcement agencies to improve how they manage their communications and information systems. This results in the capacity for mobile users to enjoy almost instantaneous access to information.

WHAT IS CDPD?

CDPD is a specification for supporting wireless access to the Internet and other public packet-switched networks. Data transmitted on the CDPD systems travel several times faster than data send using analog networks

Cellular telephones and m..................[:=> Show Contents <=:]



Simputer


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:49:10 PM
Last Edited Or Replied at :Wednesday 19th of March 2014 03:44:32 PM
Simputer , architecture of simputers, simputer architecture , sweet simputer means, the simputer acess device for the masses , simputer pdf, schlumberger payflex reference manual , soft keyboard, phonetics to speech engine used in simputer , how a simputer is used as a smart caed reader, simputer ,
idging the digital divide is to have shared devices that permit truly simple and natural users interfaces based on sight, touch and studio. The Simputer meets these demands through a browser for the Information Markup Language (IML). IML has been created to provide a uniform experience to users to allow rapid development of solutions on any platform.

Features
Simputer is a hand held device with the following features:
- It is portable
- A (320 X 240) LCD Panel which is touch enabled
- A speaker, microphone and a few keys
- A soft keyboard
- A stylus is a pointing device
- Smart card ..................[:=> Show Contents <=:]



Cellular Digital Packet Data


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:36:29 PM
Last Edited Or Replied at :Tuesday 27th of November 2012 11:54:02 PM
Data, Packet , Digital, Cellular , cellular digital, in ppt future enhancement of cdpd , cellular digital packet, what is cellular digital packet data and its working , cellular digital packet data,
nformation society. While CDPD technology is more complex than most of us care to understand, its potential benefits are obvious even to technological novices.

In this so-called age of information, no one need to be reminded of speed but also accuracy in the storage, retrieval and transmission of data. The CDPD network is a little one year old and already is proving to be a hot digital enhancement to the existing phone network. CDPD transmits digital packet data at 19.2 Kbps, using idle times between cellular voice calls on the cellular telephone network.
CDPD technology represent a way f..................[:=> Show Contents <=:]



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