Hi Sukshith,
I see you are interested in calculating the Bit Error Rate (BER) and Block Error Rate (BLER) using MATLAB for your given transmit and receive data.
Here is how you can achieve that:
% Parameters
M = 4;
k = log2(M);
% TxData and RxData
TxData = [0.707+0.707j, 0.707-0.707j, -0.707-0.707j, -0.707+0.707j];
RxData = [0.707-0.707j, 0.707-0.707j, 0.707-0.707j, -0.707-0.707j];
% Demodulate transmitted symbols to bits
TxSymbols = qamdemod(TxData, M);
TxBits = de2bi(TxSymbols, k, 'left-msb');
TxBits = TxBits(:); % Reshape to a column vector
% Demodulate received symbols to bits
RxSymbols = qamdemod(RxData, M);
RxBits = de2bi(RxSymbols, k, 'left-msb');
RxBits = RxBits(:); % Reshape to a column vector
% Calculate Bit Error Rate (BER)
numBitErrors = sum(TxBits ~= RxBits);
totalBits = numel(TxBits);
BER = numBitErrors / totalBits;
% Calculate Block Error Rate (BLER)
numBlockErrors = sum(TxSymbols ~= RxSymbols);
totalBlocks = numel(TxSymbols);
BLER = numBlockErrors / totalBlocks;
% Display results
fprintf('Bit Error Rate (BER): %.2f\n', BER );
fprintf('Block Error Rate (BLER): %.2f\n', BLER );
Refer to the following documentations for more details about the functions:
- qamdemod: https://www.mathworks.com/help/comm/ref/qamdemod.html
- de2bi: https://www.mathworks.com/help/comm/ref/de2bi.html
Hope this helps.
