Hi all , i have some questions :
In "
./gr-digital/python/ofdm_packet_utils.py " file :
1- in pkt_dt = ' ' . join ((payload_with_crc ,'\x55'))
What is
'\x55' representing to , i found it "U" in ASCII . Why U specifically ? and why we concatenate it with payload_with_crc ?
2- How "random_mask_tuple" is generated through the 15-bit Linear Feedback Shift Register (LFSR) .
Are they random ? if yes , why are they of length 8 bits (maximum number 255 ) instead of 15 bits ?!
3- Pad for USRP , It is for USRP to pad zeros to reach a length of 512 Bytes (or its multiples) to send across the USB ! . Now , what about USRP 2 ?! and the process across the Ethernet , in other wards , am i forced to make " Pad for USRP =True " while using USRP2 ?!
Thanks in-advance
Amr ,