UEP LT Codes with Intermediate Feedback

被引：18

作者：

Sorensen, Jesper H. ^{[1
]}

Popovski, Petar ^{[1
]}

Ostergaard, Jan ^{[1
]}

机构：

[1] Aalborg Univ, Dept Elect Syst, Aalborg, Denmark

来源：

IEEE COMMUNICATIONS LETTERS | 2013年 / 17卷 / 08期

关键词：

Rateless codes; fountain codes; LT codes; unequal error protection; feedback; UNEQUAL ERROR PROTECTION; WINDOW FOUNTAIN CODES;

D O I：

10.1109/LCOMM.2013.070913.130657

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

We analyze a class of rateless codes, called Luby transform (LT) codes with unequal error protection (UEP). We show that while these codes successfully provide UEP, there is a significant price in terms of redundancy in the lower prioritized segments. We propose a modification with a single intermediate feedback message. Our analysis shows a dramatic improvement on the decoding performance of the lower prioritized segment.

引用

页码：1636 / 1639

页数：4

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