If understood correctly, here is how to get it:
...
for n = 1:length(ebnoVec)
% Reset the error counter for each Eb/No value
reset(errorRate)
% Reset the array used to collect the error statistics
errVec = [0 0 0];
% Set the channel Eb/No
awgnChannel.EbNo = ebnoVec(n);
while errVec(2) < 200 && errVec(3) < 1e7
% Generate a 1000-symbol frame
data = double(codeword);
% Modulate the binary data
modData = bpskModulator(data);
% Pass the modulated data through the AWGN channel
rxSig = awgnChannel(modData);
% Demodulate the received signal
rxData = bpskDemodulator(rxSig);
% Collect the error statistics
errVec = errorRate(data,rxData);
end
% Here is how to get the value (s) of rxData:
if n==2
D_ebno6=rxData; % Stored under this variable
% disp(rxData)
end
% Save the BER data
end