Under the Guidance Of: Presented By: Mrs. BASIMA YOOSAF AJMAL KHAN Assistant Professor Roll No :R11U002 Department Of CSE Class : S7, CSE

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CONTENTS• INTRODUCTION• NETWORK EVOLUTION• WHY GiFi?• DISADVANTAGES OF BLUETOOTH & WiFi• GIFI• COMPARISON BETWEEN BLUETOOTH, WiFi AND GiFi• ARCHITECTURE OF GiFi• WORKING IN GiFi• TIME-DIVISION DUPLEX• WHY 60GHZ?• ULTRA WIDE BAND FREQUENCY USAGE• ADVANTAGES • APPLICATIONS AND FUTURE SCOPE• CONCLUSION• REFERENCES

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INTRODUCTION

• For many years cables ruled the world.

• Optical fibers played a dominant role for its higher bit rates and faster transmission.

• But the installation of cables caused a greater difficulty and thus led to wireless access.

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NETWORK EVOLUTION

BluetoothWiFi

WiMax

Cables Optical Fiber

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WHY GiFi?

• The common Wireless technologies currently used are:

• Bluetooth

• WiFi

• The disadvantages of existing technologies:

• Slow rate.

• High power consumption.

• Low range of frequency operation.

Gave invention to this new technology.

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DISADVANTAGES OF BLUETOOTH & WiFi

• The bit rates of Bluetooth is 800 Kbps and Wi-Fi has maximum of 11 Mbps.

• Both are having power consumptions 5mw and 10mw.

• The lower frequency of operation 2.4GHz.

So, to have higher data transfer rate at lower power consumption we move onto GiFi technology.

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GIFI

• GiFi stands for Gigabit Wireless.

• Professor Stan Skafidas of Melbourne University

is the man behind GiFi.

• Worlds first transceiver integrated on a single chip.

• It operates at 60 GHz frequency band .

• Fabricated using the CMOS (Complementary Metal Oxide

Semiconductor) process, the same system that is currently used

to print silicon chips.

• Allows wireless transfer of audio and video data at up to 5 gbps.

Stan Skafidas

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GIFI (cont)• GiFi has ten times the current maximum wireless transfer rate

at one-tenth of the cost(approximately $10), usually within a

range of 10 meters.

• It satisfies the standards of IEEE 802.15.3C

• It utilizes a 5mm square chip and a 1mm wide antenna burning

less than 2milli watts of power to transmit data.

GiFi chip8

COMPARISON BETWEEN BLUETOOTH, WiFi AND GiFi

CHARACTERISTICS BLUETOOTH WI-FI GI-FISpecificationAuthority

Bluetooth SIG IEEE, WECA NICTA

DevelopmentStart date

1998 1990 2004

Primary device Mobile phones, PDAs, Consumer,Electronics officeIndustrial Automation Devices

Notebook, Computers, Desktop,Computer servers

Mobile phones, Home devices, PDAs, Consumer,Electronics officeIndustrial Automation Devices

Power consumption 5mw 10mw < 2mw

Data transfer rate 800Kbps 11Mbps 5 Gbps

Range 10 meters 100 meters 10 meters

Frequency 2.4GHz 2.4GHz 57-64GHz

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ARCHITECTURE OF GiFi

• The core component of a Gi-Fi system is the subscriber station

which available to several access points .

• It supports standard of IEEE 802.15.3C millimeter-wave

Wireless PAN.

• An 802.15.3C based system often uses small antenna at the

subscriber station.

• It supports line of sight operation.

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WORKING IN GiFi• Use time division duplex for both transmission and receiving.

• Data files are up converted from IF range to RF60Ghz range by using 2 mixers.• Fed this to an power amplifier, which feeds millimeter wave

antenna.

• The incoming RF signal is first down converted to an IF signal centered at 5 GHz and then to normal data ranges.

• Use heterodyne construction for this process to avoid leakages due to direct conversion.

• Due to availability of 7 GHz spectrum the total data will be will be transferred within seconds.

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TIME-DIVISION DUPLEX• Time-Division Duplex (TDD) is the application of time-division

multiplexing to separate outward and return signals.

• It emulates full duplex communication over a half duplex

communication link.

• Time division duplex has a strong advantage in the case where

the asymmetry of the uplink and downlink data speed is

variable.

• As uplink traffic increases, more channel capacity can

dynamically be allocated to that, and as it shrinks it can be taken

away. 12

WHY 60GHZ?

• This frequency band is currently mostly unused.• Here we will use millimeter wave antenna which will operate at 60 GHz frequency which is unlined band. • Millimeter-wave range of the spectrum makes possible high component on-chip integration.• Allows the integration of very small high gain arrays.• Immunity to co-channel interface.• High security.• Frequency re-use.• Point-to-point wireless systems operating at 60 GHz have been used for many years for satellite-to-satellite communications.

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WHY 60GHZ? (cont)• High oxygen absorption at 60GHZ (10-15 dB/Km).

• Absorption attenuates 60 GHz signals over distance, so that

signals cannot travel far beyond their intended recipient.

• 60GHz is an excellent choice for covert communications.

Oxygen Attenuation vs Frequency14

ULTRA WIDE BAND FREQUENCY USAGE

• Technology with high bit rate, high security and faster

data transmission.

• Ultra-Wideband (UWB) is a technology for

transmitting information spread over a large

bandwidth (>500 MHz) that should, be able to share

spectrum with other users.

• Zero carrier technique with low coverage area.

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ADVANTAGES

• High speed of data transfer

• Low power consumption

• High security

• Cost effective

• Small size

• Small form factor

• Quick deployment

• Highly portable, high mobility16

APPLICATIONS AND FUTURE SCOPE

• Household appliances :

• It makes the wireless home and office of the future.

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APPLICATIONS AND FUTURE SCOPE (cont)

• Office appliances :

• As it transfers data at high speeds that made work very easy .

• Video information transfer:

We can transfer data at a speed of gbps.

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APPLICATIONS AND FUTURE SCOPE (cont)• Broadcasting video signal transmission system in sports stadium

• Inter-vehicle communication system :

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APPLICATIONS AND FUTURE SCOPE (cont)

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CONCLUSION

• The GiFi integrated transceiver chip is may be launched by

starting of next year by NICTA(National Information and

Communication Technology Research Centre), Australia

• Due to less cost of chip so many companies are looking forward

to launch with lower cost.

• Within five years, we expect GiFi to be the dominant technology

for wireless networking.

• Era of wireless home and office in future.

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REFERENCES

• www.wikipedia.org

• www.ieee.org

• http://www.yuvaengineers.com/?p=570

• http://www.seminarprojects.com/Thread-gi-fi

• www.sensable.com

• www.technologyreview.com

• IEEE magazines

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TIME FOR DISCUSSION23

THANK YOU

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