Bytes lost after mpsk-receiver

Hi all,
I’ve been learning gnu-radio for two-months now.GNURadio mailing-list
archives have been a lot useful to me and now I have a question or two
to ask.
When I ran the example, every parameters with
default-setting, it was fine and I have received 666 packets correctly.
However, when I changed the code so that I’m reading the (pseudo-random)
data from a file (12500 bytes total) and packet-size of 100bytes, I
found that I didn’t receive the last packet.
Another thing I changed to the code is that to write the data retreived
from the receive side to a file. I defined an outfile and in rx_callback
funcition, I wrote payload data to the file and looked at the retreived
data and confirmed that I’m shot of the last packet.Â
I also logged data at various stages for troubleshooting and I found
that I’m getting 16bytes less than what I should after the mpsk_receiver
(which I think leads to the last packet loss at the correlator later?)Â
I was using the default parameters for the receiver; I tried to study on
the workings of it, and tweaked a few parameters but in vain.
Any pointers will be much appreciated.
(I also checked the queue watcher thread to see how many times
rx-callback is called and it is also one less than it should be.)

Another question I have is on the default_access_code used in the I read somewhere in the mailing list that it has to do
with GSM systems. Can anyone tell me if this access_code is from some
IEEE standard and if so, which one?

Thanks in advance.


This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs