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Re: [Discuss-gnuradio] benchmark_* not working correctly


From: Tim Meehan
Subject: Re: [Discuss-gnuradio] benchmark_* not working correctly
Date: Wed, 26 Sep 2007 13:01:14 -0700


I have some additional hints.

When I run with 2 samples per symbol (the default)
./benchmark_loopback.py  -s 20 -M 0.004 -S 2 
ok = False  pktno =   19  n_rcvd =    1  n_right =    0
ok = False  pktno =    7  n_rcvd =    2  n_right =    0
ok = False  pktno =  180  n_rcvd =    3  n_right =    0
......

Consistent with Dev

When I run with 4 samples per symbol
./benchmark_loopback.py  -s 20 -M 0.004 -S 4
ok = False  pktno =    2  n_rcvd =    1  n_right =    0
ok =  True  pktno =    3  n_rcvd =    2  n_right =    1
ok = False  pktno =    6  n_rcvd =    3  n_right =    1
.....

So it is still broken but seems to perform "better" with 4 samples per symbol.  I have spent some time looking through all of the blocks and looking through the .dat files with logging turned on.  The data data looks OK up until gr_mpsk_receiver_cc.  I spent a good amount of time looking through this file but I suspect the problem lies elsewhere because this file does not seem to have changed other than comments since rev 5873

I will keep looking

Tim




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