In chapter two, a new q-ary generalized self-shrinking sequence is introduced. The sequences generated have good pseudo-randomness.
在第二章提出了一类新的广义自缩序列，研究表明该类序列具有较好的伪随机性质；
2
This paper mainly expound the encoding and decoding principle of Q - ary LDPC codes, and introduce a Fourier transform decoding method with low complexity.