Re: [Discuss-gnuradio] header_payload_demux

2014-05-30 Thread Marcus Müller
> The second question is:I see the fft block,it has one option:shift,and you set yes. The FFT block is able to shift the left half of your vector to the end. It's basically identical to the fftshift function in Matlab: With shift, f=0 is the middle bin (and not the first one) . > And now I want to

Re: [Discuss-gnuradio] header_payload_demux

2014-05-30 Thread Martin Braun
On 30.05.2014 03:28, xianda wrote: Hi Thanks for your kindly reply. 1.The second question is:I see the fft block,it has one option:shift,and you set yes. And in the transmit part,we should do the ifft.And in the receive part,we should do the fft. They all set the shift:yes. An

Re: [Discuss-gnuradio] header_payload_demux

2014-05-29 Thread xianda
Hi Thanks for your kindly reply. 1.The second question is:I see the fft block,it has one option:shift,and you set yes. And in the transmit part,we should do the ifft.And in the receive part,we should do the fft. They all set the shift:yes. And now I want to save the data to

Re: [Discuss-gnuradio] header_payload_demux

2014-05-29 Thread Martin Braun
On 05/29/2014 08:07 PM, xianda wrote: > Hi: > Thank you in advance. > I have two simple question: > 1.In the grc,i see a block: header_payload_demux > It has 3 input:in,trigger,header_data.But i see > the header_payload_demux_impl.cc:iosignature::make2(1,2,..,..).But it > h