B系统中LDPC译码量化问题研究

he LDPC(Low-Destiny Parity-Check) code is an important code in the field of the Channel Coding. Because it’s performance in theory nearer to Shannon Limit, more and more people pay attention to this code. A lot of paper analysis the qualification method using log-BP arithmetic. This paper mainly talks about the qualification method using min-sum arithmetic in DTTB system, simulation the performance in AWGN channel, BPSK modulation. Because the min-sum arithmetic is much easier than the log-BP arithmetic in the hardware implementation, reasonable and easy qualification method can provide theory assurement.