LT码和RS-LT级联码的性能研究  

Evaluating the Performance of LT Code and LT-RS Code

作　　者：周毅刚[1] 赵天婵[1] 

机构地区：[1]哈尔滨工业大学信息与工程学院,哈尔滨市150001

出　　处：《科学技术与工程》2009年第21期6343-6347,共5页Science Technology and Engineering

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.

关 键 词：LT码 RS-LT级联码 解码失败概率 度的分布 

分 类 号：TN911[电子电信—通信与信息系统]