I had two questions…I did spend some time searching for my answers in
mailing list and couldn’t find “if already discussed” solutions. Please
forgive if so.
Q.1. TX side: I simply want to take a packet and XOR each bit of the
with a PN-code (hint: final goal will be to implement a DSSS). Could you
please hint me some pointers as to where catch the packet before it gets
modulated so that I can XOR it with my code? I read and re-read
benchmark_tx.py code and tried to trace the function send_pkt(). But I
couldn’t do a good job at it. Please give me some pointers. PS: My
modulation choice will be DBPSK.
Q.2. RX side: I want to use usrp_rx_cfile.py to capture my sent data,
change it into matlab readable data format using “read_binary_complex.m”
finally will do XOR with my code in MATLAB. I have one small question
possibly a stupid one…that I am about to ask it hesistantly… the
file I get as an output of usrp_rx_cfile.py, say binary.dat, do I need
demodulate it at all (with dbpsk_demod) as the usrp_rx_cfile.py has no
options for allowing me to select my demod_type.
-Thanks in Advance,
-Novice-GnuRadioer and Novice-DSPer