Gi-Fi Wireless Technology

Gi-Fi Wireless Technology 1

Gi-Fi Wireless Technology

Name :- Hetang Chauhan Enrolment - 15014031002

U. V. Patel College of Engineering


• Introduction• What is Gi-Fi • Technology Evolution• Why Gi-Fi is used• How its Work • Features• Applications• Future Scope• Conclusion

Contents


Introduction

• Gi-Fi or Gigabit Wireless is the world's first Transceiver integrated on a single chip.

• It operates at 60GHz on the CMOS process.• Gi-Fi allows wireless transfer of audio and video

data up to 5 gigabits per second.• Data transfer speed of up to 5Gbps within a radius

of 10 meters.


What is Gi-Fi ?

• Gi-Fi is Gigabit wireless• It is basically a wireless communication at data

rate about one million bits (gigabits) per second.


Transceiver chip

Gigabit wireless: The Gi-Fi integrated wireless transceiver chip, developed at the National ICT Research Centre, Australia.

Transmitters and receivers are on same chip, is called Transceivers


Technology Evolution

Technology Evaluation [1]


Why Gi-Fi ?

• The common Wireless technologies currently used are:

- Bluetooth

- Wi-Fi• The disadvantages of existing technologies

- Slow rate.- High power consumption.- Low range of frequency operation.


Why Gi-Fi ?

Characteristics Gi-Fi Wi-Fi Bluetooth

Frequency 57-64GHz 2.4 GHz 2.4 GHzData Transfer

Rate5 Gbps 11Mbps 800Kbps

Range 10Meters 100Meters 10Meters

Power Consumption

< 2 mw 10 mw 5 mw

Primary Application

Embedded in Devices

WLAN Ethernet

WPAN Cable


Technologies Used

• Multiple Input Multiple Output (MIMO)› Emerging Cost Effective Technology

• Performance Improvements› Array gain › Diversity gain› Spatial Multiplexing Gain› Interference Reduction


• System on a package› More Feasible Approach then SOC.› Overall Enhancement of Functionalities› Overcomes Disadvantages of MCM’s

• Point-to-point Communication at 60GHz• Millimeter Wave Antenna at 60GHz


Working Principle• Time Division Duplex for both transmission and receiving.• Transmission :

› Data files from IF range to RF-60Ghz range.› Conversion using 2 mixers› Fed to a power amplifier› Fed to millimeter wave antenna.

Data Up linking [8]


Working Principle• Reception:

› RF signal down converted to an IF signal at 5 GHz .› Converted to normal data ranges using heterodyne

principle to avoid leakages.› Availability of 7 GHz spectrum .

Data Downlinking [8]


Time division duplex (TDD)• Separate outward and return signal.• Full duplex communication.• Uplink and downlink are separated from each others.• Asymmetric flow for uplink and downlink data transmission• Users are allocated time slots for uplink and downlink

transmission.

Time Division Duplex[11]


TDM Signal Simulation


Cont..


Transmitted Signal

0 2 4 6 8 10 12-5

0

5Sinusoidal Signal

0 2 4 6 8 10 12-5

0

5Square Signal

0 2 4 6 8 10 12-5

0

5Triangular Signal

Simulation Results:


TDM Signal Channel

0 2 4 6 8 10 12-5

0

5TDM channel-1

0 2 4 6 8 10 12-5

0

5TDM channel-1

0 2 4 6 8 10 12-5

0

5TDM channel-1


Receivered Signal

0 2 4 6 8 10 12-5

0

5Recovered Sinusoidal Signal

0 2 4 6 8 10 12-5

0

5Recovered Square Signal

0 2 4 6 8 10 12-5

0

5Recovered Triangular Signal


Features of Gi-Fi

• High speed of data transfer• Low power consumption• High security• Cost effective• Small size• Quick deployment• Highly portable, high mobility


Applications of Gi-Fi

• Household appliances : It makes the wireless home and office

of the future.

• Office appliances : As it transfers data at high speeds that

made work very easy .

• Video information transfer: We can transfer at a speed of gbps.


Conclusion

• Gi-Fi offers High speed of data transfer, Low power consumption, High security, Cost effective, Quick deployment, Small size, Highly portable, high mobility etc. For short range transmissions as compare to current technology.

• we expect Gi-Fi to be the dominant technology for wireless networking.

• Gi-Fi can bring wireless broadband to the enterprise in an entirely new way.


Referances

[1] Srikanth P,“ Inovative with GI-FI Tecnology”, Prist university Pondicherry, India,IJARCST , vol.2 Issue1 ,2014.[2] Sabita Gauni, Kumar Ramamoorthy, “Analysis of Reduction in Complexity of MIMOOFDM Systems with Frequency Offset Estimation and correction,” Journal of Computer Science (JCS), Vol. 10, No.2, pp.198-209, 2014.[3] G. Saini, S. Meghwal, “Capacity Improvement in Multi-User MIMO System using Dirty Paper Coding,” IJRITCC, Vol.2, Issue-2, Feb. 2014.[4] K. Sengar, N. Rani, “Study and Capacity Evaluation of SISO, MISO and MIMO RF Wireless Communication Systems,” IJETT, Vol. 9, No. 9, Mar-2014.


[5] Gowtham S Shetty,“Gi-Fi: Next Generation Wireless Technology”,VisvesvarayaTechnological university,Belgaum,2011.[6] Theodore S. Rappaport, “Wireless Communication: Principles and Practice”, Prentice- Hall, 2ndEdition, 2010, India.[7] Ross, John, “The Book of Wireless: A Painless Guide to Wi-Fi and Broadband Wireless”,Second Edition, San Francisco, CA: No Starch Press, 2008.[8] A. F. Sengar, N. Rani, “Capacity of MIMO Systems with Antenna Selection,” IEEE Transaction, Vol. 4, No. 4, July 2005.


[9] Yong Soo Cho, Jaekwon Kim Won Young Yang, Chung-Gu-Kang, “MIMO-OFDM Wireless Communication with MATLAB”, John Willey & Sons (Asia) Pte Ltd.[10] Rfglobalnet.com-Fixed wireless communication at 60 Ghzhttp://www.rfglobalnet.com/doc/ fixed wirelesscommunications-at-60ghz-unique-0001[11] http://www.radio electronics.com/info/cellulartelecomms/cellular_concepts/tdd-fdd-timefrequency-division-duplex.php

http://www.radio/


Thank You……