Design of Unequal Error Protection LDPC Codes for Higher Order Constellations

Design of Unequal Error Protection LDPC Codes for Higher Order Constellations
复制标题

高阶星座不等差错保护LDPC码设计

DOI:
10.1109/icc.2007.157
复制
发表时间:
2007
期刊:
2007 IEEE International Conference on Communications
影响因子:
--
通讯作者:
Sara Sandberg
Sara Sandberg
中科院分区:
--
文献类型:
--
作者:
Neele von Deetzen;Sara Sandberg

文献摘要

被引文献

相似文献

我们提出了一种具有高阶星座的不等差错保护(UEP)-LDPC 码的优化方法。通过修改高斯近似下的密度演化算法,我们提出了一种灵活的代码设计算法,适用于可变数量的保护类别和具有格雷映射的任意调制方案。我们的结果表明,针对高阶星座的适当代码设计可降低总体误码率。此外,还研究了对代码UEP能力的影响,即保护等级之间的误码率差异。
We present an optimization method for unequal error protection (UEP)-LDPC codes with higher order constellations. By modifying the density evolution algorithm under the Gaussian approximation, we propose a flexible code design algorithm for a variable number of protection classes and arbitrary modulation schemes with Gray mapping. Our results show that appropriate code design for higher order constellations reduces the overall bit-error rate. Furthermore, the influence on the UEP capability of the code, that is, the difference in bit-error rate between the protection classes, is investigated.