19-03-2014, 04:04 PM
Gi-Fi
Gi-Fi [.pptx (Size: 1.13 MB / Downloads: 22)
INTRODUCTION…..
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 allows wireless transfer of audio and video data up to 5 gigabits per second.
Gi-Fi is ten time faster than the current maximum wireless transfer rate usually within a range of 10 meter.
Why Gi-Fi ….?
The reason for pushing into Gi-Fi technology is because of
slow rate,
high power consumption,
low range of frequency operation
Disadvantages of Bluetooth & Wi-Fi
The bit rates of Bluetooth is 800 Kbps and Wi-Fi has 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
Working of Gi-Fi….
Here we will use time division duplex for both trasmission and receiving.
Data files are up converted from IF range to RF 60Gz range by using 2 mixers.
We will 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 a normal data range.
here we will use heterodyne principle for this process to avoid leakages due to direct conversion due to availability of 7Ghz spectrum the total data will be will be transferred within seconds.
Time Division Duplexing (TDD)…
Significance
It is the application of time-division multiplexing to separate outward and return signals. It emulates full duplex communication over a half duplex communication link.
Why 60 GHz……?
Here we will use millimeter wave antenna which will be operate at 60GHz frequency which is unlined band. Because of this band we are achieveing high data rates.
Energy propagation in the 60GHz band has unique characteristic that make possible many other benefits .
Such as excellent immunity to co-channel interference , high security , and frequency re-use.
FEATURES OF Gi-Fi….
High speed of data transfer
Low power consumption
High security
Cost effective
Small size
Quick deployment
Highly portable, high mobility
It has more flexible architecture
No interference
CONCLUSION….
Within five years, 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.