Distributed Medium Access control for Next Generation CDMA Wireless Networks


Generic Distributed Network Model
we focus on a generic network model where a number of wireless mobile nodes are organized in a flat fashion, communicating with each other via one-hop or multiple-hop connections without any central control. Connections to outside correspondence nodes are supported through a gateway (e.g., in the wireless backbone) or an access point (e.g.,in ad hoc networks or WPAN).
In the past decade, code-divi ....etc

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Presented by :
Sanjay Kumar Sethi


TALK FLOW
INTRODUCTION
WHAT IS 3G
HOW 3G WORKS
ADVANTAGES OF 3G
DISADVATAGES OF 3G
WHAT IS WI-FI
HOW IT WORKS
PRODUCTS OF WI-FI
ADVANTAGES WI-FI
DISADVANTAGES WI-FI
CONCLUSION
INTRODUCTION
We are going to compare and contrast two technologies for delivering broadband wireless Internet access services: 3G and Wi-Fi.
The former, 3G, refers to the collection of third generation mobile technologies that are designed to allow mobile operators to offer integrated ....etc

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You hit the power button on your television and it instantly comes to life. But do the same thing with your computer and you have to wait a few minutes while it goes through its boot-up sequence. Why can't we have a computer that turns on as instantly as a television or radio? IBM, in cooperation with Infenion, is promising to launch a new technology that will eliminate the boot-up process. Magnetic random access memory (MRAM) has the potential to store more data, access that data faster and use less power than current memory technologies.

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Random access memory (RAM) is the best known form of computer memory. RAM is considered random access because you can access any memory cell directly if you know the row and column that intersect at that cell.

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Wireless DSL

The Wireless Last Mile
In October 2002, at Owensboro, a small Kentucky city on the Ohio River, after a five-month pilot program, the local electricity and water provider, Owensboro Municipal Utilities (OMU), rolled out a high-speed broadband service to the city's 58 000 residents at US $25 a month, just $2 more than what many were paying for low-speed dial-up access. In a short six months since launching service, OMU Online has connected more than 700 customers with broadband access. Currently, it has a backlog of several hund ....etc

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VoDSL

The VoDSL (Voice over DSL) decodes signaling messages that are exchanged over VoDSL network and protocols used over LES ATM-AAL2 links. The main purpose of the signaling messages are to allocate AAL2 channels, activate user IAD ports, manage the customer premises IAD through the EOC management channel and to set and release POTS and ISDN calls. The whole concept of VoDSL is to support multiple voice calls, either inbound or outbound, over a single DSL circuit, while simultaneously supporting high speed Internet access. VoDSL is based o ....etc

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Definition

The accelerated growth of content-rich applications that demand high bandwidth has changed the nature of information networks. High-speed communication is now an ordinary requirement throughout business, government, academic, and work-at-home environments. High-speed Internet access, telecommuting, and remote LAN access are three services that network access providers clearly must offer. These rapidly growing applications are placing a new level of demand on the telephone infrastructure, in particular, the local loop portion of ....etc

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