On 9/16/2010 2:41 AM, Tobias Schmid wrote:
Hello Achilleas,
I tried out your idea and added an interleaver. While doing this, I got
the error that really caused my trouble. I splited the coded
sequenceinto 2 packets. And as I changed this, I worked fine, even
better after adding an interleaver
Hello Achilleas,
I tried out your idea and added an interleaver. While doing this, I got
the error that really caused my trouble. I splited the coded
sequenceinto 2 packets. And as I changed this, I worked fine, even
better after adding an interleaver.
So thanks for your idea.
But that broug
Hello Achilleas,
that's exactly what I thought abaout as well. Because the part I
discribed as channel in my last mail is a wireless transmission using usrp2.
Not using channel coding, I have packet error rates of 1 to 2 % using
bpsk subcarrier constellation and abaout 18 % using qpsk. And if
My guess is that the inner channel (ie the combination of OFDM
modulator/channel/OFDM demodulator) is producing big bursts of errors.
Essentially either the packet is correctly received or completely
erroneously received.
In that case the outer Convolutional code cannot do much; on the
contrar
Hallo,
I guess I explained to less. I'm using hard symbol coding. As I read in
the documentation, I can use the trellis modulated Symbols how ever I
want to. So on the transmitter side, I do not forward the trellis
modulated symbols to a QAM modulator or something. I convert the
generated fsm
Hi,I've got another question. I implemented an OFDM-transmission eviroment and now I additionally added channel coding. It works fine, but when using trellis modulator and viterbi decoder, the packeterrorrate increases.I realized the blockbuilding, using a message_queue counting the incomming item
