Re: [Discuss-gnuradio] DBSRX Multiple Input

[Matias Torres Risso]

2009/6/11 Matt Ettus <address@hidden>:
> Matias Torres Risso wrote:
>>
>> Hi,
>>
>> i'm trying to receive the dedicated control channel SACCH (GSM)
>> between MS and BTS (MS --> BTS). But to do this task i need also
>> listen the control channel between the BTS and MS. My question is if i
>> can receive this two signals (diferent spectrum) at the same time with
>> my board (USRP + DBSRX) or maybe i need other daughterboard to manage
>> this signals.
>>
>> Other solution that i was thinking is to listen the BTS->MS control
>> channel to know the frame number (synchronize) and after that listen
>> the MS->BTS SACCH.
>>
>> I'm using GNUradio 3.2, GSSM project and GSMSP project.
>
>
> If the two channels are close enough to be within the DBSRX passband, you
> could receive both.  Otherwise, you'd need two DBSRX boards.
>
> Matt
>


Thanks,

But that is exactly the problem. The bandwidth of the DBSRX is not
enough to capture both frequency channels. So i'll get another board.
-- 
Matías Torres Risso - Ingeniero Civil Eléctrico Universidad de Chile
(En Proceso de Titulación)