An Effective Puncturing Algorithm for QC-LDPC Codes with Dual-diagonal Structure

摘要：

Puncturing is an effective method to achieve rate compatible. However, the existing puncturing algorithms are complex and difficult to implement by hardware. This article researches on puncturing algorithm for QC-LDPC codes with dual-diagonal structure. Taking LDPC codes under IEEE802.16e standard as an example, this paper proposes a simple puncturing algorithm to achieve bit-rate compatible. Based on dual-diagonal structure, the puncturing algorithm chooses variable nodes with low degree for deletion and follows the rule that the deleted variable nodes should not be in the same calibration equation as far as possible. The simulation shows that the proposed puncturing algorithm is simple and effective, and the sub-codes obtained through the puncturing have better BER performance than that of random puncturing and order puncturing. In addition, because the puncturing matrix does not need to send to the receiver, it reduces a lot of overhead. Overall, the proposed puncturing algorithm is very practical to achieve rate compatible.

关键词： Low Density Parity-Check Code dual-diagonal rate compatible puncturing

作者: Xin Zhao Lidong Zhu Yantao Guo Xiaogang Gou

作者单位: National Key Laboratory of Science and Technology on Communications, UESTC, Chengdu, China, 611731 National Key Laboratory of Science and Technology on Communications, UESTC, Chengdu, China, 611731 S Science and Technology on Information Transmission and Dissemination in Communication Networks Labor

会议类型: 国际会议

会议名称: 2012 5th Global Symposium on Millimeter-Waves(2012年第五届全球毫米波会议 GSMM 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 38-42

在线出版日期: 2012-05-27（万方平台首次上网日期，不代表论文的发表时间）