Re: [Discuss-gnuradio] LTE and DVB-T signals

[Ben Wojtowicz]

Isabella,

If you are looking for a LTE modulator/demodulator, I have a project
called openLTE (sourceforge.net/projects/openlte) that accomplishes
much of this.  It does not currently support all of the LTE
specifications, but might be enough to get you going.

Regards,
Ben

On Mon, Jul 2, 2012 at 2:28 PM, J Mc <address@hidden> wrote:
> Isabella,
>
> I do not believe the OFDM mod block will provide you with what you need,
> both DVB-T and LTE follow a highly defined structure that defines pilot
> symbols and resource scrambling/user mapping that I doubt the OFDM block can
> emulate without significant modification. If this only has to be "DVB-T/LTE
> Like" then you could certainly make the statement that occupied tones is
> relative to occupied subcarriers etc... however it will not work with real
> hardware. What you could do is develop a non-realtime cell-wide LTE/DVB-T
> demodulator but even then that isn't a completely simple task, just simpler
> than a transmitter.
>
> Regards,
> John
> ________________________________
> Date: Mon, 2 Jul 2012 15:53:28 +0200
> From: address@hidden
> To: address@hidden
> Subject: [Discuss-gnuradio] LTE and DVB-T signals
>
> Hi,
> I have to generate DVB-T and LTE signals using gnuradio companion.
> I'm in trouble because I don't know how to set some parameters in the OFDM
> modulator block.
>
> LTE signal:
> transmission bandwith: 5MHz
> FFT size: 512
> Cyclic prefix length: 128
> occupied subcarriers:300
>
> My questions concerning LTE signal are:
> 1) The number of occupied tones is the number of occupied subcarriers?
> 2)Which value should I set for the payload length?
>
> -----------------------------------------------------------------------------------------------------------
> DVB-T signal:
> transmission bandwith: 5MHz
> FFT size: 8192 (8k)
> occupied carriers:6817
>
> My question concerning DVB-T signal is:
> 1)Which value should I set for the Payload length and the Cyclic prefix
> length?
>
> In both cases of LTE and DVBT signals is it correct to set INPUT TYPE as
> "complex"?
>
> If someone could help me,   I would be very thankful.
>
>
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