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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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AL PACKET SWITCH ARCHITECTURES :-
6.1 An architecture with a space switch fabric
Space switch fabric architecture is shown in figure. The switch consists of N incoming and N out going fiber links, with n wavelengths running on each fiber link. The switch is slotted, and the length of the slot is such that an optical packet can be transmitted and propagated from an input port to an out put optical buffer.
The switch fabric consists of three parts; optical packet encoder, space switch, and optical packet buffer. The optical packet buffer works as follows. For each incoming fiber link, three..................[:=> 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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es are 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 efficie..................[:=> 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,
f switching:
1. Circuit switching
2. Packet switching
3. Cell switching
Circuit Switching :
This type of switching is the one used in the field of conventional telephony . In an end-to-end dedicated link is set up before communication starts. This link is solely used for this communication and after that it is broken .The steps involved in the process of circuit switching are
1. Circuit setup
2. The actual communication
3. Clearing of the circuit
Packet switching:
Here data is sent as ..................[:=> 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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itching are
1. Circuit setup
2. The actual communication
3. Clearing of the circuit

Packet switching:
Here data is sent as packets .Due to this fact, there is an efficient utilization of the communication line. The earlier problem of waiting does not occur here as more than one source can use the line at the same time.

All data to be transmitted is first assembled into one or more messages units called packets, by the source DTE.These packets include both source&destination DTE to its local packets switching exchange (EXE).On receipt of each packets, the exchange first store..................[:=> 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,
bers, 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 packet will be switched to is provided by the control unit, which ahs knowledge of the state of the entire switch.

Each out put buffer is an optical buffer implemented as follows. It consists of d+1 ODLs, numbered from 0 to d. ODL1 d..................[:=> 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,
one optical gate..................[:=> 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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the transmitter. A user searching for information has only to look for lights from an iLight transmitter. Very often, the device is concurrently used for illumination, display, or visual signage. Hence, there is no need to implement an additional transmitter for information broadcasting. Compared with an IR transmitter, an iLight transmitter has to be concerned with even brightness. There should be no apparent difference to a user on the visible light that emits from an iLight device.

It has long been realized that visible light has the potential to be modulated and used as a communication ..................[:=> 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 ,
tion units that are capable of operating in parallel for example, in addition to the MAC unit, they typically contain an arithmetic- logic unit (ALU) and a shifter.

Efficient Memory Accesses
Executing a MAC in every clock cycle requires more than just a single-cycle MAC unit. It also requires the ability to fetch the MAC instruction, a data sample, and a filter coefficient from memory in a single cycle. To address the need for increased memory bandwidth, early DSP processors developed different memory architectures that could support multiple memory accesses per cycle. Often, instructions ..................[:=> 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,
logically per OBS design parameter

Burst aggregation:

OBS collects upper layer traffic and sort it based on destination addresses and aggregate it into variable size bursts The exact algorithm for creating the bursts can greatly impact the overall network operation because it allows the network designers to control the burst characteristics and therefore shape the burst arrival traffic The burst assembly algorithm has to consider a preset timer and maximum and minimum burst lengths The burst aggregation algorithm may use bit-padding ,the differentiation of class traffic , create classes..................[:=> 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 ,
he nodes will overcome this limitation. With their improved efficiency and lower costs, Optical switches provide the key to both manage the new capacity Dense Wavelength Division Multiplexing (DWDM) links as well as gain a competitive advantage for provision of new band width hungry services. However, in an optically switched network the challenge lies in overcoming signal impairment and network related parameters. Let us discuss the present status, advantages and challenges and future trends in optical switches.

A fiber consists of a glass core and a surrounding layer called the cladding...................[:=> 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,
emiconductor optical amplifiers (SOA) based 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 , plastic memory ppp,
ears. Technology has unfortunately not seen this freedom two often. Several rounds of intends discussions among the trustees convinced them that the only way to break out the current absurdities is to foster a spirit of co-operation in inventing new technologies. The common mistake of treating to-operation as a synonym of charity poses its own challenges. The Simputer Licensing Framework is the Trust's responds to these challenges.

What is Simputer?
A Simputer is a multilingual, mass access, low cost, portable alternative to PC's by which the benefits of IT can reach the common man. It has..................[:=> Show Contents <=:]



Integrated data and voice


Posted by: Electrical Fan
Created at: Sunday 04th of October 2009 04:19:11 AM
Last Edited Or Replied at :Saturday 10th of October 2009 04:32:30 AM
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and j) and an interconnecting circuit (m circuits) in the backbone MAN. End-to-end blocking probabilities are calculated in terms of three components: circuit blocking probability, destination busy probability, and concurrent busy probability. larger size systems, develop an iterative algorithm that provides a computationally efficient method for the calculation of the end-to-end blocking probabilities. incorporate into this algorithm the effects of the destination busy events, demonstrating that such events could provide a significant contribution to the end-to-end blocking performance when..................[:=> 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 ,
ility to be extended in the future. CDPD supports both the Internet's Connectionless Network Protocol (CLNP).

CDPD also supports IP multicast (one-to-many) service. With multicast, a company can periodically broadcast company updates to sales and service people on the road or a news subscription service can transmit its issues as they are published. It will also support the next level of IP, IPV6. With CDPD we are assigned our very own address. With this address, we are virtually always connected to our host without having to keep a constant connection.

There are currently two methods fo..................[:=> 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 , plastic memory ppp,

- 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 not in use. When the Simputer is 'powered on', the user is presented with a screed having several icons.

What Makes Simputer Different From Regular PCs?
Simputer is not a..................[:=> 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,
een experimenting with the use of digital cellular telecommunications as a wireless means to transmit data. The result of their effort is CDPD systems. These systems allow users to transmit 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 ..................[:=> Show Contents <=:]



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