Study on Improvement and Application of LDPC Code
Weng Yun · Modern Electronic Technique · 2005
On the basis of introducing the basis principle of LDPC code, we mend the structure from two aspects about transmission over arbitrary discrete memoryless channels. This kind of LDPC code is an irregular LDPC code defined over the field GF(q) and has better performance in comparison with other regular LDPC codes. We consider that using the irregular LDPC code, under maximumlikelihood decoding, is capable of reliable communication at rates arbitrarily close to the capacity of any discrete memoryless channel. Simultaneously, we discuss practical iterative decoding of this code structure and introduce its application simply on OFDM system and compressing image transmission system.