Gi-Fi technology

1. Under the Guidance Of: Presented By:
Mrs. BASIMA YOOSAF AJMAL KHAN
Assistant Professor Roll No :R11U002
Department Of CSE Class : S7, CSE1

2. 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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3. 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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4. NETWORK EVOLUTION
BluetoothWiFi
WiMax
Cables Optical Fiber
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5. 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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6. 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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7. 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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8. 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 chip
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9. COMPARISON BETWEEN BLUETOOTH,
WiFi AND GiFi
CHARACTERISTICS BLUETOOTH WI-FI GI-FI
Specification
Authority
Bluetooth SIG IEEE, WECA NICTA
Development
Start date
1998 1990 2004
Primary device Mobile phones,
PDAs, Consumer,
Electronics office
Industrial
Automation Devices
Notebook,
Computers, Desktop,
Computer servers
Mobile phones,
Home devices,
PDAs, Consumer,
Electronics office
Industrial
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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10. 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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11. 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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12. 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.
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13. 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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14. 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 Frequency
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15. 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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16. ADVANTAGES
• High speed of data transfer
• Low power consumption
• High security
• Cost effective
• Small size
• Small form factor
• Quick deployment
• Highly portable, high mobility
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17. APPLICATIONS AND FUTURE SCOPE
• Household appliances :
•It makes the wireless home and office of the future.
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18. 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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19. APPLICATIONS AND FUTURE SCOPE (cont)
• Broadcasting video signal transmission system in sports stadium
• Inter-vehicle communication system :
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20. APPLICATIONS AND FUTURE SCOPE (cont)
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21. 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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22. 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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23. TIME FOR DISCUSSION
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24. THANK YOU
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