nanoBTS multi-TRX setup

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Konrad Meier meierk at informatik.uni-freiburg.de
Wed Apr 13 14:16:01 UTC 2011


Am 13.04.2011 15:23, schrieb Dieter Spaar:
> Hello Konrad,
>
> On Wed, 13 Apr 2011 13:10:54 +0200, "Konrad Meier"<meierk at informatik.uni-freiburg.de>  wrote:
>>
>> 1. What is the purpose of the "RF cable"?
>> Is the TX port of the master BTS looped through the second BTS? Or hase
>> every nanoBTS his own TRX/RX?
>
> The RF cable is used to route TX from the rear unit to the AUX connector
> of the front unit. The SMB socket at the back and AUX are directly connected,
> there is nothing special about them. So in a stacked two-units assembly
> the front unit also has the TRX antenna of the rear unit at the AUX connector.
> Most certainly the idea is to improve transmission of the rear unit or to
> better separate the two TRX antennas.
>
> So TX is looped through one unit but the two TX signals are not combined.

Thank you. This made it clear. I thought about the same setup but was 
hoping that the TRX signal is combined.

Any idea what the NWL connector is for?

Best regards
Konrad




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