mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
18 lines
506 B
Matlab
18 lines
506 B
Matlab
function cfo = cfo_estimate_cp(input_slot, Nsyms, sym_len, cp0_len, cp_len)
|
|
|
|
% Start correlating from the end. Nsyms is the number of symbols to
|
|
% correlate starting from the end.
|
|
|
|
s=length(input_slot)-sym_len-cp_len;
|
|
e=length(input_slot)-sym_len;
|
|
for i=1:Nsyms
|
|
r(i)=sum(input_slot(s:e).*conj(input_slot(s+sym_len:e+sym_len)));
|
|
if (i < 7)
|
|
s=s-sym_len-cp_len;
|
|
e=e-sym_len-cp_len;
|
|
else
|
|
s=s-sym_len-cp0_len;
|
|
e=e-sym_len-cp0_len;
|
|
end
|
|
end
|
|
cfo=-angle(mean(r))/pi; |