Introduction - If you have any usage issues, please Google them yourself
1)Generate a parity check matrix of LDPC with size .
2)Use the BF algorithm to decode a codeword generated by using 1).
3)Give the bit error probability of your decoding algorithm when the SNR is 1, 1.5, 2, 2.5, 3 dB with BPSK modulation and AWGN channels.