Re: [Discuss-gnuradio] Fwd: How can I add freq. offset(related to time index) after IFFT in data symbol in ofdm example?

[Adeel Anwar]

>>Thanks again. I am not familiar with simulink. U mean we can visually program in GR using signal Block or widget instead of writing all code directly?

Yes

On Thu, Jul 25, 2013 at 9:04 PM, Yingjie Chen <address@hidden> wrote:

Thanks again. I am not familiar with simulink. U mean we can visually program in GR using signal Block or widget instead of writing all code directly?

Sent from my iPhone

On 25 Jul, 2013, at 23:47, Adeel Anwar <address@hidden> wrote:

for index = 1:PacketLength

    PacketWithFreqOffset(index) = Packet(index)*exp(i*2*pi*fΔ*SampleRate*index);

end

So is above  implementation in matlab similar to that in Gnuradio?

No. GNURadio implementation resembles Simulink instead of Matlab. Just think how can u add freq-offset in Simulink and replicate that in GNURadio

-Adeel

On Thu, Jul 25, 2013 at 8:41 PM, Yingjie Chen <address@hidden> wrote:

Thanks for you reply, Adeel. I am still confused in implementation.

I have done simulation before in matlab. In matlab, timebase index can refer to each element in signal vector.

Please refer to following code for illustration, fΔ refers to freq. offset, index refers to time index,  Packet is signal vector, SampleRate = 1/20Mhz

for index = 1:PacketLength

    PacketWithFreqOffset(index) = Packet(index)*exp(i*2*pi*fΔ*SampleRate*index);

end

So is above  implementation in matlab similar to that in Gnuradio? 

_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio