2. 2
INTRODUCTION T0 GI-FI
For many years cables ruled the world, optical fibres played a
dominant role for its faster transmission but installation of cable caused
a greater difficulty and lead to wireless access.
Foremost of this is bluetooth then Wi-Fi followed it. But the mans
continuous quest for even better technology led to the introduction of
new ,more up-to-date standard for data exchange rate i.e. Gi-Fi.
Wi-Fi(ieee-802.11b) and WiMax(ieee-802.16e) have captured our
attention.
As there is no recent developments which transfer data at faster rate,
as Video information transfer taking lot of time.
This leads to introduction of Gi-Fi technology it offers some
advantages over Wi-Fi, a similar wireless technology.
It was developed at the National Information And Communication
Technology Research Center in MELBOURNE,AUSTRALIA.
4. WHY GI-FI ?
The reason for pushing into Gi-Fi
technology is because of
slow rate,
high power consumption,
low range of frequency operations
of earlier technologies
i.e.,Bluetooth and Wi-Fi.
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5. Comparison of Bluetooth and Wi-Fi with Gi-Fi
characteristic
s
Bluetooth Wi-Fi Gi-Fi
Frequency 24GHz 24GHz 60GHz
Range 10 meter 100meters 10meters
Primary application WPAN cable replacement WLAN Ethernet Embedded in
devices
Data transfer rate 800 Kbps 11Mbps 5Gigabps
Power consumption 5mw 10mw 2mw
Primary devices Mobile phones,PDAs,consumer electronics,office
and industrial devices
Notebooks,desktop
computer
Fax,Printer, Cellular
phones
Primary uses Travelling employees,electronics consumers,office
ad industrial workers
corporate users Wireless Home & office
appliances ,etc.
Usage location Anywhere atleast two bluetooth device exist-ideal
for roaming outside buildings
Within range of WLAN
infrastructure,usually
inside a buildings
WPAN Networks
Specification Bluetooth S&G IEEE 802.11b,WBCA IEEE 802.15.3C
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6. DISADVANTAGES OF BLUETOOTH & WI-FI
The bit rates of Bluetooth is
800Kbps and Wi-Fi has 11Mbps
Both are having power
consumptions 5mw and 10mw
The lower frequency of
operation 2.4GHz.For
transferring large amount of
videos, audios, data files take
hours of time.
So, to have higher
data transfer rate at lower
power consumption we move
onto Gi-Fi technology
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7. WHAT IS GI-FI ?WHAT IS GI-FI ?
Gi-Fi or Gigabit Wireless is the world's
first transceiver integrated on a single chip
that operates at 60GHz on the CMOS
process.
Gi-Fi will allow wireless transfer of audio
and video data up to 5 gigabits per second.
Gi-Fi is ten times the current maximum
wireless transfer rate usually within a range
of 10 meters.
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8. 8
Gigabit wireless: The Gi-Fi integrated
wireless transceiver chip,
developed at the National ICT
Research Centre, Australia.
9. ARCHITECTURE OF GI-FI
The core components of a GI-FI system is the
subscriber station which available to several access
points .
It is based on standards of IEEE 802.15.3C
The wireless span is computer network used
for communication among computer devices
(including telephones and personal digital
assistants) close to one person
An 802.15.3c based system often uses small
antenna at the subscriber station. The antenna is
mounted on the roof. It supports line of sight
operation.
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10. Use of Time Division Duplex for both transmission and
receiving.
Conversion of data from IF range to RF60Ghz range
The incoming RF signal is first down converted to an IF
signal centered at 5 GHz and then to normal data
ranges.
Then use heterodyne principle for this process to avoid
leakages.
And then data is transferred.
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WORKING OF GIFI
11. FEATURES OF GI-FI
High speed of data transfer
Low power consumption
High security
Cost effective
Small size
Quick deployment
Highly portable,highmobility
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13. APPLICATIONS OF GI-FI
1. House hold appliances :
-it makes the wireless home
of the future:
2. Office appliances :
3. Video information transfer:
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15. TECHNOLOGY CONSIDERATIONS
The Gi-Fi integrated transceiver chip is may
be launched by starting of next year by NICTA,
Australia will be first .
Due to less cost of chip so many companies are
forward to launch with lower cost.
Specifically, Wireless HD has a stated goal of
enabling wireless connectivity for streaming high-
definition content between source devices and high-
definition displays.
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16. CONCLUSION
Within five years, we expect Gi-Fi to be the
dominant technology for wireless
networking.
which will develop wire less home and
office of future.
If the success of Wi-Fi and the imminent
wide usage of WiMAX is any indication, Gi-
Fi potentially can bring wireless broadband
to the enterprise in an entirely new way.
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