Re: Problems with packet communication using BPSK

[Shruti Gupta]

Okay, got it now. So in '1', I am feeding the samples received by 
LimeSDR Mini to FLL, polyphase clock sync and costas loop for 
synchronization. Since it does not have any known reference signal 
appended to data, it will not take care of phase ambiguity at receiver 
and so my data is not exactly same as what is being transmitted and 
there are some bit inversions. However in '2' , I am appending header 
with preamble and other information to the payload to create packet 
which is transmitted by Lime SDR Mini. This data is received over the 
air by another SDR which uses correlation estimator to calculate the 
correlation as well as the phase, amplitude and time estimation used by 
the  blocks downstream in the receiver.  This is where I have issues 
when my RX doesn't detect or parse any packet.

Thanks and Regards
SG