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On a serial concatenated code using an LT code and its iterative decoding algorithm

基于LT码的串行级联码及其迭代译码算法

基本信息

批准号：
21760295
负责人：
TOKUSHIGE Hitoshi
金额：
$ 1.75万
依托单位：
The University of Tokushima
依托单位国家：
日本
项目类别：
Grant-in-Aid for Young Scientists (B)
财政年份：
2009
资助国家：
日本
起止时间：
2009 至 2010
项目状态：
已结题

项目摘要

LT codes are rate less codes whose code length and dimension can be arbitrarily chosen. It has been shown that they provide considerably better performance by using a message-passing decoding. However, they are not able to achieve good error performance for a noisy channel. Then we propose a concatenated code using outer LT and inner conventional error correcting codes, and its decoding algorithm in which an iterative bounded-distance decoding and soft-decision LT decoding are performed to the inner and outer codes, respectively. The simulation results have shown that the proposed scheme is more effective than a conventional concatenated coding scheme.

LT码是一种码长和维数可以任意选择的无码率码。它已被证明，他们提供了相当好的性能，通过使用消息传递解码。然而，它们对于噪声信道不能实现良好的误差性能。然后提出了一种采用外LT码和内常规纠错码的级联码及其译码算法，该译码算法分别对内码和外码进行迭代有界距离译码和软判决LT译码。仿真结果表明，该方案比传统的级联编码方案更有效。