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What are the effects of Antenna Gain and Diversity Gain in GSM RF?

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What are the effects of Antenna Gain and Diversity Gain in GSM RF?
posted May 19, 2014 by Varun Kumar

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1 Answer

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Gain is most important thing in wireless communication and if its passive then it will be very useful here I write about antenna gain and diversity gain definition and its effect.

Antenna Gains:

Mobile Station Antenna:

  • Portable mobile phones antennas have typically gain of 0 to 1 dBd.
  • Car mounted antenna has a typical gain of 1 to 3 dBd.

Base Station Antenna:

  • Omni directional antennas typically have a gain of 0-9dBd.
  • Directional antennas typically have a gain of 9 to 14 dBd.

Diversity Gain:

  • Diversity is used on the uplink to overcome deep fades due to multipath by combining multiple uncorrelated signals.
  • Diversity antenna systems are used mostly at the BTS on the uplink.
  • Diversity antenna system can be realised by physically separating two receive antenna in space or by using polarization diversity.
  • Diversity gain should be considered in Link Budget Analysis whenever it is used.
  • Typically a gain of 3dB is considered whenever diversity is used in the Uplink calculation.
answer May 20, 2014 by Samardeep Acharya
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