Method for constructing QC-LDPC codes using the dayan sequence
Yingguan Wang · Journal of Xidian University · 2012
For the purpose of constructing a channel coding solution with excellent performance,we present a method to construct Quasi-Cyclic Low-Density Parity-Check Codes based on the Dayan Sequence by analysing its characteristic.By making use of the feature that the fixed sequence difference in the Dayan Sequence has a steady increase value,this method is used to construct a parity check matrix that has no circle of length four,with the structure of quasi cyclic,and needs little storage space.Simulation results show that,under 10-5BER,in the Additive White Gaussian Noise channel and Rayleigh fading channel,QC-LDPC based on the Dayan Sequence has a gain nearly 1 dB more than that by QC-LDPC based on the Fibonacci Sequence.Also,in the Additive White Gaussian Noise channel,it has a gain almost 3 dB more than that by array LDPC.