摘要
提出了一种能显著提高抗干扰能力的RS-LT级联编码方法,文中介绍了喷泉码的基本概念和特点,以及喷泉码的度的分布和编译码过程等问题,分析了RS-LT级联码在降低解码失败概率方面的优点。仿真结果表明,RS-LT级联码能够在低信噪比的条件下保证可靠传输。
A method of RS-LT Concatenated Code which can efficiently improve the quality of the received data even under the condition of low SNR was presented. The basic concept and characteristic of Fountain codes are introduced, and the question of degree distribution, the encoding and decoding algorithm of Fountain codes were introduced. The RS-LT Concatenated Code＇s superiority to the LT code in decoding failure probability was analyzed. The simulation results show that RS-LT Concatenated Code allows for reliable communication at low SNR.
出处
《科学技术与工程》
2009年第21期6343-6347,共5页
Science Technology and Engineering
关键词
LT码
RS-LT级联码
解码失败概率
度的分布
LT code
LT-RS concatenated code
decoding failure probability
degree distribution
