CDMA Technology

Abstract :

CDMA was developed by QUALCOMM Incorporated, a company in San Diego, California. QUALCOMM engineers decided to do something different and applied spread spectrum techniques to a multiple access system, which ultimately became CDMA.
In spread spectrum, instead of giving each person a channel, or each group of 3 or 8 people a time slot, CDMA puts everyone in the same channel at the same time.
At first thought, it would seem to be an impossible task to make work, but it does work. The reason it works is expla ....etc

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Indian Telecom Scene- CDMA-vs-GSM or Spectrum technology

presented by:
b.b anand
president
Reliance Infocomm Ltd.
Vijaya Building, 13th Floor,17, Barakhamba Road,
New Delhi


Indian telecoms at current value

-India – a dynamic & vibrant economy - about 7 to 8 % GDP growth
-Tele density : Risen from less than 2% in 2000 to 8.80 %by Jan’2005
-Total subscribers base in India 94.92 million by the end of Jan’05.
-Wireless subscribers at the end of Jan’05 is ....etc

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Bluetooth is one of the most recent development in wireless technology. Bluetooth technology allows wireless connection between various communication devices with ease. The paper begins with a brief introduction of Bluetooth technology and the need for it. It then explains other two types of wireless communication viz. Infrared communication and Cable Synchronization and the advantages of Bluetooth over these. It also explains the techniques by which Bluetooth avoids interference from other electronic devices. Further an example is illustrated ....etc

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Every new invention in the past ha to contend with various cynics who content that the existing technology is better than the new one or do you recall anyone saying That wonâ„¢t work man itâ„¢s too Hi-Fi, Well Blue tooth is also passing through the same phase.

For every new technology to get integrated into the society we have to pass certain phases that are predefined.

1. Scientific discussion: This is the place where the new technology is introduced and born out. Here the papers are presented at scientific seminars. Various pr ....etc

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hello i want it bacause i have a seminar
hi i want ppt i like your resfdggggggfvxckbnkl nnnnxkcvbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcsfnbdklbdfbn ....etc

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CDMA TECHNOLOGY



INTRODUCTION

We are moving into a new era of communications and information technology. Personal competitiveness in business in relies more and more on increase personal productivity and responsiveness. Today everybody is on the move and mobile is the only way to keep contact with that person. But now a days peoples want multimedia facilities from their mobile handset. But it requires high data rate, hi efficiency and many ....etc

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looking for advantages and disadvantages of cdma technology pdf ? ....etc

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MOBILE COMMUNICATIONS
(IMPLEMENTATION OF CDMA TECHNOLOGY IN CELLULAR
PHONES)
Presented By:
M.Vamsi Krishna
B.kiran sai phaneswar


ABSTRACT:

A wireless digital communication system is a technique that allows people to communicate each other at a distance. In this paper we tried to explain one of the latest technologies of digital wire less communication systems - The CDMA and the application of this on cellular phones.CDMA is an acronym for code division multiple ....etc

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Introduction of CDMA TECHNOLOGY


ABSTRACT

Code-Division Multiple Access, a digital cellular technology that
uses spread-spectrum techniques. Unlike competing systems, such
as GSM, that use TDMA, CDMA does not assign a specific frequency
to each user. Instead, every channel uses the full available spectrum.
Individual conversations are encoded with a pseudo-random digital
sequence.
As the term implies, CDMA is a form of multiplexing which allows
numerous signals to occupy a single transmission chann ....etc

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CDMA technology


INTRODUCTION :-

Code division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code) to allow multiple users to be multiplexed over the same physical channel. By contrast, time division multiple access (TDMA) divides access by time, while frequency-division multiple access (FDMA) divid ....etc

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