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Re: [Discuss-gnuradio] Tx slow hopping for GSM

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Tx slow hopping for GSM
Date: Fri, 19 Jan 2007 16:19:44 -0800
User-agent: Thunderbird (X11/20070104)

Sharmila Kannangara wrote:
> Hello,
> I was wondering how well the USRP would support slow
> hopping on the transmit side.  I want to transmit a
> mobile signal for a lab simulation and want it to also
> be able to support the slow hopping (once per frame)
> of GSM.

What is the total frequency range you need to cover?  If it is less than
40 MHz, you won't even need to retune the PLL, you can just tune
digitally.  If not, the settling time of the PLL is significantly less
than 1 ms.


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