Currently the best, fastest software decode is by using
19.2MSps over 5 processes.
1) Capture data - adjust gain (-g) frequency (-f) and which side
the tvrx is on to fit your local setup:
usrp_rx_cfile -R B -d 10 -g 65 -f 503e6 atsc_data_6-4m_complex
2) Make pipes:
mkfifo /tmp/atsc_pipe_1
mkfifo /tmp/atsc_pipe_2
mkfifo /tmp/atsc_pipe_3
mkfifo /tmp/atsc_pipe_4
mkfifo /tmp/atsc_pipe_5
3) In seperate windows run processes:
./interp.py
./xlate.py
./fpll.py
./btl-fsd.py
./viterbi-out.py