Gi-Fi [Next Generation of Wireless Technology]

 Keerthana
3rd Sem B.Sc(EMCs)

• It was developed by professor Stan Skafidis of Melbourne University.
• Gi-Fi or Gigabit wireless is the world’s first transceiver integrated on a single chip that operates at 60GHz on the complementary metal-oxidesemiconductor(CMOS).
• Gi-Fi allows wireless transfer of audio and video data up to 5gigabits per second.

Architecture of Gi-Fi

• The core component of a Gi-Fi system is the subscriber station.
• It supports standard of IEEE 802.15.3C wireless PAN networks.
• 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.

Working Principle

• Gi-Fi will use time division duplex(TDD) for both transmission and receiving. TDD is the application of time-division multiplexing to separate outward and return signals.
• Here data files are converted from IF range to RF60Ghz range by using 2 mixers and we will feed this to a power amplifier, which feeds millimetre wave antenna.
• The incoming Rf single is first down converted to an IF singles cantered at 5GHz and then to normal data ranges.
• We use heterodyne construction for this process to avoid leakage due to direct conversion.
• Due to availability of 7GHz spectrum the total data will be transferred within second.

Features of Gi-Fi

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

Future Scope

Within five years, we expect Gi-Fi to be the dominant technology for wireless networking. By that time it will be fully mobile, as well as providing low-cost, high broadband access, with very high speed large files swapped with in a second. Gi-Fi potentially can bring wireless broadband to the enterprise in a entirely new way.