摘要
提出了一种改进的RS/LT级联编码构造方法,并分析了其在基于DVB广播中的应用。分析了RS-LT级联编码相对传统LT码在提高可译码概率方面的优点。仿真结果表明,该方法提高了LT码在相同编码冗余度下的可译码概率,降低了LT码在一定可译码概率下的编码冗余度要求。应用RS/LT级联码方法,可以减小DVB广播中因为媒体流失同步而导致的画面阻塞,具有很好的应用前景。
A method of combining RS / LT concatenated codes for DVB-based broadcast is presented in this paper. It＇s superiority of the traditional LT code in decoding probability is analyzed as well. The simulation results show that this method improves the decoding probability of LT code in the same redundancy and reduce the coding redundancy requirements in a certain decode probability. The method reduces the screen blocking on the DVB broadcast, which has good application prospects.
出处
《电子设计工程》
2010年第6期97-98,101,共3页
Electronic Design Engineering
关键词
LT码
RS.LT码
纠删信道
可译码概率
RS频域编解码
LT codes
RS-LT codes
erasure channel
decoding probability
RS frequency domain encoding and decoding
