Terminology » Other Wireless » GiFi: Advantages and Disadvantages

GiFi: Advantages and Disadvantages

wireless communication gifi millimeter wave high speed short range

This page explores the advantages and disadvantages of GiFi technology, outlining its benefits and drawbacks.

What is GiFi?

Introduction:

GiFi is a technology that transmits data at gigabit speeds using millimeter-wave frequencies. It’s defined by the IEEE 802.15.3c standard and was developed by NICTA Australia.

GiFi devices form wireless Personal Area Networks (PANs) with a coverage range of a few meters. Subscriber stations communicate with several Access Points (APs) in Line-of-Sight (LOS) communication.

The following table highlights key features of GiFi technology:

SpecificationsGiFi support
Operating Frequency57 to 64 GHz (60 GHz mmWave unlicensed band)
Data rate> 5 Gbps
CoverageAbout 10 meters
DuplexingTDD (Using one antenna) FDD (Using two antennas)
Modulation TypeBPSK

To transmit data, the modulated Intermediate Frequency (IF) signal is upconverted to the millimeter-wave frequency. Conversely, to retrieve data, the millimeter-wave signal is downconverted to the IF frequency.

Refer to mmWave up converter and down converter design for more information.

Benefits or Advantages of GiFi

Here are the benefits of using GiFi:

  • Very High Data Rate: It offers very high data rates with relatively low interference.
  • Low Power Consumption: GiFi devices consume very little power.
  • Cost-Effective: The devices are very cost-effective to produce.
  • Small Size: The GiFi chip is very small (approximately 5mm on each side), allowing for smaller devices.
  • Enhanced Security: It supports both service-level and link-level security, offering enhanced protection.
  • Fast Deployment: GiFi networks and devices can be deployed quickly and easily. Installation is fast and straightforward.

Drawbacks or Disadvantages of GiFi

Here are the downsides to using GiFi:

  • Short Distance: It only supports short distances (around 10 meters) due to high signal attenuation.
  • Signal Blocking: GiFi signals are easily blocked by objects due to their shorter operating wavelength.
  • No RTS/CTS: RTS/CTS (Request to Send/Clear to Send) signals are not used in GiFi, unlike the WiFi standard.
  • Less Secure than LiFi: It’s considered less secure compared to LiFi (Light Fidelity) systems. This is because LiFi operates on light waves, while GiFi uses electromagnetic waves, which are potentially more susceptible to interception.

Refer to advantages and disadvantages of mmwave frequency radar.

Conclusion

Understanding the advantages and disadvantages of GiFi requires a solid grasp of its fundamentals and how it compares to other technologies like WiFi and LiFi.