[Discuss-gnuradio] Problems with FEC encoder/decoder

Hi, I am working with the "mpsk_stage6.grc" of the gr-tutorial. I added a FEC Enconder and a FEC Decoder to the flowgraph as follows: File source --> Unpack k bits (8) --> FEC Encoder --> Packet encoder --> Map (-1,1) --> Packet encoder --> Constellation Modulator --> ... --> Differential decoder

Python embedded block stops working after consume()

Hi, I've been trying to implement a sync python embedded block that processes all input_items. At the end of the work() function, I call output_items[0][:] = input_items[0] self.consume_each(len(input_items[0])) return len(input_items[0]) This works well the first time and all data is processed

Re: Python embedded block stops working after consume()

r reference, here is the autogenerated code for a new module: > > def work(self, input_items, output_items): > in0 = input_items[0] > out = output_items[0] > # <+signal processing here+> > out[:] = in0 > return len(output_items[0])

Re: Python embedded block stops working after consume()

I see but no, I'm not processing a finite number of samples. I'm generating a message periodically with a Message Strobe, then the message is encoded and modulated as a WiFi signal using the modules in: https://github.com/bastibl/gr-ieee802-11. Now, I'm trying to detect the signals myself and then

Re: Python embedded block stops working after consume()

n the following block, I just returned len(output_items[0]) without using consume() or produce() and it works fine. So, apparently, my code is a bit random, but I'm happy it works now. :) Thanks for your help, Jeff! Best regards, Verónica On Thu, Oct 28, 2021 at 8:47 AM Verónica Toro Betancur w

Re: Python embedded block stops working after consume()

m this block? Glad > it's working for you, in any case. > > On Thu, Oct 28, 2021 at 6:24 AM Verónica Toro Betancur > wrote: > >> Nevermind now, I figured it out! >> >> It turns out that using produce() instead of consume() does the trick, >> but I couldn&#

RF signals are pure noise in Python implementation

Hi, I am trying to detect and decode WiFi and ZigBee signals in GNURadio. For the detection, I have implemented my own blocks in Python. It all works well with simulated signals but the problem comes when I use radios to acquire real signals. I'm using Pluto SDR and it works perfectly when I use i

Re: RF signals are pure noise in Python implementation

for something that works like zigbee. Do you > have a link to your code? > > I think it should be working better than what you're seeing. > > -Michelle W5NYV > > > > > On Thu, Nov 25, 2021 at 5:59 AM Verónica Toro Betancur > wrote: > >> Hi, >> >

Re: RF signals are pure noise in Python implementation

> have you maybe mismatched data types? Like, the real signals are fixpoint, > but your Python is doing floating point? > > --M > > On Thu, Nov 25, 2021 at 2:59 PM Verónica Toro Betancur > wrote: > >> Hi, >> >> I am trying to detect and decode WiFi an

Re: RF signals are pure noise in Python implementation

needs to match > that. > > Best regards, > > Marcus > > On 25.11.21 17:47, Verónica Toro Betancur wrote: > > Hi Martin, > > > > Yes, that could definitely be the case. I don't have my radios right now > with me, but > > I'll try it tomorrow

Re: RF signals are pure noise in Python implementation

7;t know how. Best regards, Verónica On Fri, Nov 26, 2021 at 12:40 AM Marcus Müller wrote: > Hi, > > pretty sure that thing actually emits complex64/gr_complex/fc32. > > Best regards, > Marcus > > On 25.11.21 19:58, Verónica Toro Betancur wrote: > > Hi Marcus, > >