Community discussions

 
CoolTom
newbie
Topic Author
Posts: 30
Joined: Fri Feb 08, 2019 12:15 pm

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
Member
Member
Posts: 323
Joined: Wed Feb 16, 2011 6:02 am
Location: Australia

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
newbie
Topic Author
Posts: 30
Joined: Fri Feb 08, 2019 12:15 pm

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
Member Candidate
Member Candidate
Posts: 193
Joined: Thu Jan 18, 2018 5:18 pm

Re: LTE modem R11e-LTE antena connect

Thu Apr 11, 2019 3:58 pm

Connect both for better quality.
 
User avatar
zlobster
newbie
Posts: 39
Joined: Sun Nov 20, 2016 2:47 pm

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
newbie
Topic Author
Posts: 30
Joined: Fri Feb 08, 2019 12:15 pm

Re: LTE modem R11e-LTE antena connect

Fri Apr 12, 2019 1:16 am

Oh very nice answer. Thank you a lot!

Who is online

Users browsing this forum: No registered users and 22 guests