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CoolTom
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LTE modem R11e-LTE antena connect

Wed Apr 10, 2019 4:54 pm

Just wondering about connecting antena. LTE modem R11e-LTE has two connectors. Do I need connect both of them with antena? Two antenas per card? Or just one and AUX leave not connected? Thnx
 
RogerWilco
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Re: LTE modem R11e-LTE antena connect

Thu Apr 11, 2019 1:59 am

You only need one antenna connected, the left. The right is for diversity.
 
CoolTom
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Re: LTE modem R11e-LTE antena connect

Thu Apr 11, 2019 3:21 pm

Do you mean Left (with label AUX) or Right (with label MAIN)? What means "diversity". Is it different from Chains on wifi card? More antenas connected = more ways = faster?

Thanks a lot
 
neutronlaser
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Re: LTE modem R11e-LTE antena connect

Thu Apr 11, 2019 3:58 pm

Connect both for better quality.
 
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zlobster
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Re: LTE modem R11e-LTE antena connect

Thu Apr 11, 2019 11:58 pm

R11e-LTE is a Cat.4 LTE modem. This means it utilizes 2x2 MIMO in downlink.

Diversity here is a bit misleading, since the diversity is working only in uplink direction. Second antenna port can work for second spatial stream. If both eNB and modem support TM3 (which it should) or even TM4, you get a working 2x2 MIMO in DL.

For fastest possible speed in DL, and less errors in UL, connect all antenna ports.
 
CoolTom
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Re: LTE modem R11e-LTE antena connect

Fri Apr 12, 2019 1:16 am

Oh very nice answer. Thank you a lot!
 
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cgood
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Re: LTE modem R11e-LTE antena connect

Fri Jan 14, 2022 9:48 pm

R11e-LTE is a Cat.4 LTE modem. This means it utilizes 2x2 MIMO in downlink.

Diversity here is a bit misleading, since the diversity is working only in uplink direction. Second antenna port can work for second spatial stream. If both eNB and modem support TM3 (which it should) or even TM4, you get a working 2x2 MIMO in DL.

For fastest possible speed in DL, and less errors in UL, connect all antenna ports.
Thanks
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