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Member
Reputation: 44
Atoll two LTE antennas per sector
Hi,
Can anyone tell me how can I add 2 antennas per sector in Atoll?
For 4x4 MIMO for example.
BR
Last edited by smartel; 2021-02-01 at 10:20 PM
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2021-02-01 06:19 PM
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Member
Reputation: 205
Re: Atoll two LTE antennas per sector
You do not need to add an additional antenna. You only need to set the number of TX and RX ports correctly. In your case it's 4TX and 4RX.
Pathloss.
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Post Thanks - 1 Thanks
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Member
Reputation: 44
Re: Atoll two LTE antennas per sector
Hi pathloss,
I want to use 2 different antennas at different heights. Do you know any tricks for that?
BR
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VIP Member
Reputation: 2737
2 out of 2 members found this post helpful.
Re: Atoll two LTE antennas per sector
In the Transmitter tab, set the number of transmitters and receivers to 4. In the Cells table, you need to specify the MIMO mode
TM
mode Cell ______________________________________________Terminal
1 |
None |
None |
2 |
Transmit/Receive Diversity |
MIMO |
3 |
SU-MIMO |
MIMO |
4 |
SU-MIMO |
MIMO |
5 |
MU-MIMO |
N/A |
It is not possible to simulate MIMO on antennas with different heights
Last edited by dmitry28; 2021-02-01 at 11:19 PM
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Post Thanks - 3 Thanks
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Member
Reputation: 44
Re: Atoll two LTE antennas per sector
Thanks dmitry28,
This means that here we have a big difference from the Planet. In Planet this is possible. You can also select which port on the antenna you want to use.
I want to simulate the vertical / horizontal diversity gain with 2 antennas, but it seems not possible in Atoll.
BR
Last edited by smartel; 2021-02-01 at 11:35 PM
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VIP Member
Reputation: 2737
2 out of 2 members found this post helpful.
Re: Atoll two LTE antennas per sector
Atoll allows you to account for MIMO gain in the Cell Equipment table
Operators often do not have the correct information on the heights of the antennas, the azimuth and tilt. And what port is used for each TRx is not known for sure. Therefore, it is easier to take into account gain than to perform 4 times more calculations.
Originally Posted by
smartel
Thanks dmitry28,
This means that here we have a big difference from the Planet. In Planet this is possible. You can also select which port on the antenna you want to use.
I want to simulate the vertical / horizontal diversity gain with 2 antennas, but it seems not possible in Atoll.
BR
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Post Thanks - 1 Thanks
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Member
Reputation: 44
Re: Atoll two LTE antennas per sector
Yes, those values are for the same antenna configuration. It was interesting if we cam see the MIMO gain in relation with diversity gain obtained by h or v antenna placement.
BR
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